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loongarch-next
6583 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
21a1f19827 |
regmap: Fixes for v6.17
These patches fix a lockdep issue Russell King reported with nested regmap-irqs (unusual since regmap is generally for devices on slow buses so devices don't get nested), plus add a missing mutex free which I noticed while implementing a fix for that issue. -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmiV7wUACgkQJNaLcl1U h9DgbAf+O3VBljLbtjoJGP25dWZcmFNkVyDu6Bq2rFeIrDKxhZT3048MraxFw1if uo+YeAuOAziDFMPqBhUvtbNIeFDg1rSzqOGhQ4NdAFHQjN8ZcwxrVzp/hXJiFMTf jAhonhUWOeerxtu5ThT12060FwX/pD/M+aV2Q6zLI44pUXw/WH7J90B0CAi76ok4 9V1NWybkCh8BUX98ePuqlut/p+1Iq8PixpoxaOdLLd3OxoRy++fjhvNjaSo65NGR C9L6Rmv46ter4LCkfHlYz+VEDQg6ahdCexSNknzncH6OV9ZYV0/SVysqrlpqOALz CUbOeXIQ9nV9PwOeQqKGgaqbxbfxhg== =G3M7 -----END PGP SIGNATURE----- Merge tag 'regmap-fix-v6.17-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap Pull regmap fixes from Mark Brown: "These patches fix a lockdep issue Russell King reported with nested regmap-irqs (unusual since regmap is generally for devices on slow buses so devices don't get nested), plus add a missing mutex free which I noticed while implementing a fix for that issue" * tag 'regmap-fix-v6.17-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: irq: Avoid lockdep warnings with nested regmap-irq chips regmap: irq: Free the regmap-irq mutex |
||
|
Mark Brown
|
76b6e14aa7
|
regmap: irq: Avoid lockdep warnings with nested regmap-irq chips
While handling interrupts through regmap-irq we use a mutex to protect the
updates we are caching while genirq runs in atomic context. Russell King
reported that while running on the nVidia Jetson Xavier NX this generates
lockdep warnings since that platform has a regmap-irq for the max77686 RTC
which is a child of a max77620 which also uses regmap-irq.
[ 46.723127] rtcwake/3984 is trying to acquire lock:
[ 46.723235] ffff0000813b2c68 (&d->lock){+.+.}-{4:4}, at: regmap_irq_lock+0x18/0x24
[ 46.723452]
but task is already holding lock:
[ 46.723556] ffff00008504dc68 (&d->lock){+.+.}-{4:4}, at: regmap_irq_lock+0x18/0x24
This happens because by default lockdep uses a single lockdep class for all
mutexes initialised from a single mutex_init() call and is unable to tell
that two distinct mutex are being taken and verify that the ordering of
operations is safe. This should be a very rare situation since normally
anything using regmap-irq will be a leaf interrupt controller due to being
on a slow bus like I2C.
We can avoid these warnings by providing the lockdep key for the regmap-irq
explicitly, allocating one for each chip so that lockdep can distinguish
between them.
Thanks to Russell for the report and analysis.
Reported-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Tested-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://patch.msgid.link/20250731-regmap-irq-nesting-v1-2-98b4d1bf20f0@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
|
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Mark Brown
|
1da33858af
|
regmap: irq: Free the regmap-irq mutex
We do not currently free the mutex allocated by regmap-irq, do so. Tested-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://patch.msgid.link/20250731-regmap-irq-nesting-v1-1-98b4d1bf20f0@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org> |
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Linus Torvalds
|
beace86e61 |
Summary of significant series in this pull request:
- The 4 patch series "mm: ksm: prevent KSM from breaking merging of new
VMAs" from Lorenzo Stoakes addresses an issue with KSM's
PR_SET_MEMORY_MERGE mode: newly mapped VMAs were not eligible for
merging with existing adjacent VMAs.
- The 4 patch series "mm/damon: introduce DAMON_STAT for simple and
practical access monitoring" from SeongJae Park adds a new kernel module
which simplifies the setup and usage of DAMON in production
environments.
- The 6 patch series "stop passing a writeback_control to swap/shmem
writeout" from Christoph Hellwig is a cleanup to the writeback code
which removes a couple of pointers from struct writeback_control.
- The 7 patch series "drivers/base/node.c: optimization and cleanups"
from Donet Tom contains largely uncorrelated cleanups to the NUMA node
setup and management code.
- The 4 patch series "mm: userfaultfd: assorted fixes and cleanups" from
Tal Zussman does some maintenance work on the userfaultfd code.
- The 5 patch series "Readahead tweaks for larger folios" from Ryan
Roberts implements some tuneups for pagecache readahead when it is
reading into order>0 folios.
- The 4 patch series "selftests/mm: Tweaks to the cow test" from Mark
Brown provides some cleanups and consistency improvements to the
selftests code.
- The 4 patch series "Optimize mremap() for large folios" from Dev Jain
does that. A 37% reduction in execution time was measured in a
memset+mremap+munmap microbenchmark.
- The 5 patch series "Remove zero_user()" from Matthew Wilcox expunges
zero_user() in favor of the more modern memzero_page().
- The 3 patch series "mm/huge_memory: vmf_insert_folio_*() and
vmf_insert_pfn_pud() fixes" from David Hildenbrand addresses some warts
which David noticed in the huge page code. These were not known to be
causing any issues at this time.
- The 3 patch series "mm/damon: use alloc_migrate_target() for
DAMOS_MIGRATE_{HOT,COLD" from SeongJae Park provides some cleanup and
consolidation work in DAMON.
- The 3 patch series "use vm_flags_t consistently" from Lorenzo Stoakes
uses vm_flags_t in places where we were inappropriately using other
types.
- The 3 patch series "mm/memfd: Reserve hugetlb folios before
allocation" from Vivek Kasireddy increases the reliability of large page
allocation in the memfd code.
- The 14 patch series "mm: Remove pXX_devmap page table bit and pfn_t
type" from Alistair Popple removes several now-unneeded PFN_* flags.
- The 5 patch series "mm/damon: decouple sysfs from core" from SeongJae
Park implememnts some cleanup and maintainability work in the DAMON
sysfs layer.
- The 5 patch series "madvise cleanup" from Lorenzo Stoakes does quite a
lot of cleanup/maintenance work in the madvise() code.
- The 4 patch series "madvise anon_name cleanups" from Vlastimil Babka
provides additional cleanups on top or Lorenzo's effort.
- The 11 patch series "Implement numa node notifier" from Oscar Salvador
creates a standalone notifier for NUMA node memory state changes.
Previously these were lumped under the more general memory on/offline
notifier.
- The 6 patch series "Make MIGRATE_ISOLATE a standalone bit" from Zi Yan
cleans up the pageblock isolation code and fixes a potential issue which
doesn't seem to cause any problems in practice.
- The 5 patch series "selftests/damon: add python and drgn based DAMON
sysfs functionality tests" from SeongJae Park adds additional drgn- and
python-based DAMON selftests which are more comprehensive than the
existing selftest suite.
- The 5 patch series "Misc rework on hugetlb faulting path" from Oscar
Salvador fixes a rather obscure deadlock in the hugetlb fault code and
follows that fix with a series of cleanups.
- The 3 patch series "cma: factor out allocation logic from
__cma_declare_contiguous_nid" from Mike Rapoport rationalizes and cleans
up the highmem-specific code in the CMA allocator.
- The 28 patch series "mm/migration: rework movable_ops page migration
(part 1)" from David Hildenbrand provides cleanups and
future-preparedness to the migration code.
- The 2 patch series "mm/damon: add trace events for auto-tuned
monitoring intervals and DAMOS quota" from SeongJae Park adds some
tracepoints to some DAMON auto-tuning code.
- The 6 patch series "mm/damon: fix misc bugs in DAMON modules" from
SeongJae Park does that.
- The 6 patch series "mm/damon: misc cleanups" from SeongJae Park also
does what it claims.
- The 4 patch series "mm: folio_pte_batch() improvements" from David
Hildenbrand cleans up the large folio PTE batching code.
- The 13 patch series "mm/damon/vaddr: Allow interleaving in
migrate_{hot,cold} actions" from SeongJae Park facilitates dynamic
alteration of DAMON's inter-node allocation policy.
- The 3 patch series "Remove unmap_and_put_page()" from Vishal Moola
provides a couple of page->folio conversions.
- The 4 patch series "mm: per-node proactive reclaim" from Davidlohr
Bueso implements a per-node control of proactive reclaim - beyond the
current memcg-based implementation.
- The 14 patch series "mm/damon: remove damon_callback" from SeongJae
Park replaces the damon_callback interface with a more general and
powerful damon_call()+damos_walk() interface.
- The 10 patch series "mm/mremap: permit mremap() move of multiple VMAs"
from Lorenzo Stoakes implements a number of mremap cleanups (of course)
in preparation for adding new mremap() functionality: newly permit the
remapping of multiple VMAs when the user is specifying MREMAP_FIXED. It
still excludes some specialized situations where this cannot be
performed reliably.
- The 3 patch series "drop hugetlb_free_pgd_range()" from Anthony Yznaga
switches some sparc hugetlb code over to the generic version and removes
the thus-unneeded hugetlb_free_pgd_range().
- The 4 patch series "mm/damon/sysfs: support periodic and automated
stats update" from SeongJae Park augments the present
userspace-requested update of DAMON sysfs monitoring files. Automatic
update is now provided, along with a tunable to control the update
interval.
- The 4 patch series "Some randome fixes and cleanups to swapfile" from
Kemeng Shi does what is claims.
- The 4 patch series "mm: introduce snapshot_page" from Luiz Capitulino
and David Hildenbrand provides (and uses) a means by which debug-style
functions can grab a copy of a pageframe and inspect it locklessly
without tripping over the races inherent in operating on the live
pageframe directly.
- The 6 patch series "use per-vma locks for /proc/pid/maps reads" from
Suren Baghdasaryan addresses the large contention issues which can be
triggered by reads from that procfs file. Latencies are reduced by more
than half in some situations. The series also introduces several new
selftests for the /proc/pid/maps interface.
- The 6 patch series "__folio_split() clean up" from Zi Yan cleans up
__folio_split()!
- The 7 patch series "Optimize mprotect() for large folios" from Dev
Jain provides some quite large (>3x) speedups to mprotect() when dealing
with large folios.
- The 2 patch series "selftests/mm: reuse FORCE_READ to replace "asm
volatile("" : "+r" (XXX));" and some cleanup" from wang lian does some
cleanup work in the selftests code.
- The 3 patch series "tools/testing: expand mremap testing" from Lorenzo
Stoakes extends the mremap() selftest in several ways, including adding
more checking of Lorenzo's recently added "permit mremap() move of
multiple VMAs" feature.
- The 22 patch series "selftests/damon/sysfs.py: test all parameters"
from SeongJae Park extends the DAMON sysfs interface selftest so that it
tests all possible user-requested parameters. Rather than the present
minimal subset.
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Merge tag 'mm-stable-2025-07-30-15-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"As usual, many cleanups. The below blurbiage describes 42 patchsets.
21 of those are partially or fully cleanup work. "cleans up",
"cleanup", "maintainability", "rationalizes", etc.
I never knew the MM code was so dirty.
"mm: ksm: prevent KSM from breaking merging of new VMAs" (Lorenzo Stoakes)
addresses an issue with KSM's PR_SET_MEMORY_MERGE mode: newly
mapped VMAs were not eligible for merging with existing adjacent
VMAs.
"mm/damon: introduce DAMON_STAT for simple and practical access monitoring" (SeongJae Park)
adds a new kernel module which simplifies the setup and usage of
DAMON in production environments.
"stop passing a writeback_control to swap/shmem writeout" (Christoph Hellwig)
is a cleanup to the writeback code which removes a couple of
pointers from struct writeback_control.
"drivers/base/node.c: optimization and cleanups" (Donet Tom)
contains largely uncorrelated cleanups to the NUMA node setup and
management code.
"mm: userfaultfd: assorted fixes and cleanups" (Tal Zussman)
does some maintenance work on the userfaultfd code.
"Readahead tweaks for larger folios" (Ryan Roberts)
implements some tuneups for pagecache readahead when it is reading
into order>0 folios.
"selftests/mm: Tweaks to the cow test" (Mark Brown)
provides some cleanups and consistency improvements to the
selftests code.
"Optimize mremap() for large folios" (Dev Jain)
does that. A 37% reduction in execution time was measured in a
memset+mremap+munmap microbenchmark.
"Remove zero_user()" (Matthew Wilcox)
expunges zero_user() in favor of the more modern memzero_page().
"mm/huge_memory: vmf_insert_folio_*() and vmf_insert_pfn_pud() fixes" (David Hildenbrand)
addresses some warts which David noticed in the huge page code.
These were not known to be causing any issues at this time.
"mm/damon: use alloc_migrate_target() for DAMOS_MIGRATE_{HOT,COLD" (SeongJae Park)
provides some cleanup and consolidation work in DAMON.
"use vm_flags_t consistently" (Lorenzo Stoakes)
uses vm_flags_t in places where we were inappropriately using other
types.
"mm/memfd: Reserve hugetlb folios before allocation" (Vivek Kasireddy)
increases the reliability of large page allocation in the memfd
code.
"mm: Remove pXX_devmap page table bit and pfn_t type" (Alistair Popple)
removes several now-unneeded PFN_* flags.
"mm/damon: decouple sysfs from core" (SeongJae Park)
implememnts some cleanup and maintainability work in the DAMON
sysfs layer.
"madvise cleanup" (Lorenzo Stoakes)
does quite a lot of cleanup/maintenance work in the madvise() code.
"madvise anon_name cleanups" (Vlastimil Babka)
provides additional cleanups on top or Lorenzo's effort.
"Implement numa node notifier" (Oscar Salvador)
creates a standalone notifier for NUMA node memory state changes.
Previously these were lumped under the more general memory
on/offline notifier.
"Make MIGRATE_ISOLATE a standalone bit" (Zi Yan)
cleans up the pageblock isolation code and fixes a potential issue
which doesn't seem to cause any problems in practice.
"selftests/damon: add python and drgn based DAMON sysfs functionality tests" (SeongJae Park)
adds additional drgn- and python-based DAMON selftests which are
more comprehensive than the existing selftest suite.
"Misc rework on hugetlb faulting path" (Oscar Salvador)
fixes a rather obscure deadlock in the hugetlb fault code and
follows that fix with a series of cleanups.
"cma: factor out allocation logic from __cma_declare_contiguous_nid" (Mike Rapoport)
rationalizes and cleans up the highmem-specific code in the CMA
allocator.
"mm/migration: rework movable_ops page migration (part 1)" (David Hildenbrand)
provides cleanups and future-preparedness to the migration code.
"mm/damon: add trace events for auto-tuned monitoring intervals and DAMOS quota" (SeongJae Park)
adds some tracepoints to some DAMON auto-tuning code.
"mm/damon: fix misc bugs in DAMON modules" (SeongJae Park)
does that.
"mm/damon: misc cleanups" (SeongJae Park)
also does what it claims.
"mm: folio_pte_batch() improvements" (David Hildenbrand)
cleans up the large folio PTE batching code.
"mm/damon/vaddr: Allow interleaving in migrate_{hot,cold} actions" (SeongJae Park)
facilitates dynamic alteration of DAMON's inter-node allocation
policy.
"Remove unmap_and_put_page()" (Vishal Moola)
provides a couple of page->folio conversions.
"mm: per-node proactive reclaim" (Davidlohr Bueso)
implements a per-node control of proactive reclaim - beyond the
current memcg-based implementation.
"mm/damon: remove damon_callback" (SeongJae Park)
replaces the damon_callback interface with a more general and
powerful damon_call()+damos_walk() interface.
"mm/mremap: permit mremap() move of multiple VMAs" (Lorenzo Stoakes)
implements a number of mremap cleanups (of course) in preparation
for adding new mremap() functionality: newly permit the remapping
of multiple VMAs when the user is specifying MREMAP_FIXED. It still
excludes some specialized situations where this cannot be performed
reliably.
"drop hugetlb_free_pgd_range()" (Anthony Yznaga)
switches some sparc hugetlb code over to the generic version and
removes the thus-unneeded hugetlb_free_pgd_range().
"mm/damon/sysfs: support periodic and automated stats update" (SeongJae Park)
augments the present userspace-requested update of DAMON sysfs
monitoring files. Automatic update is now provided, along with a
tunable to control the update interval.
"Some randome fixes and cleanups to swapfile" (Kemeng Shi)
does what is claims.
"mm: introduce snapshot_page" (Luiz Capitulino and David Hildenbrand)
provides (and uses) a means by which debug-style functions can grab
a copy of a pageframe and inspect it locklessly without tripping
over the races inherent in operating on the live pageframe
directly.
"use per-vma locks for /proc/pid/maps reads" (Suren Baghdasaryan)
addresses the large contention issues which can be triggered by
reads from that procfs file. Latencies are reduced by more than
half in some situations. The series also introduces several new
selftests for the /proc/pid/maps interface.
"__folio_split() clean up" (Zi Yan)
cleans up __folio_split()!
"Optimize mprotect() for large folios" (Dev Jain)
provides some quite large (>3x) speedups to mprotect() when dealing
with large folios.
"selftests/mm: reuse FORCE_READ to replace "asm volatile("" : "+r" (XXX));" and some cleanup" (wang lian)
does some cleanup work in the selftests code.
"tools/testing: expand mremap testing" (Lorenzo Stoakes)
extends the mremap() selftest in several ways, including adding
more checking of Lorenzo's recently added "permit mremap() move of
multiple VMAs" feature.
"selftests/damon/sysfs.py: test all parameters" (SeongJae Park)
extends the DAMON sysfs interface selftest so that it tests all
possible user-requested parameters. Rather than the present minimal
subset"
* tag 'mm-stable-2025-07-30-15-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (370 commits)
MAINTAINERS: add missing headers to mempory policy & migration section
MAINTAINERS: add missing file to cgroup section
MAINTAINERS: add MM MISC section, add missing files to MISC and CORE
MAINTAINERS: add missing zsmalloc file
MAINTAINERS: add missing files to page alloc section
MAINTAINERS: add missing shrinker files
MAINTAINERS: move memremap.[ch] to hotplug section
MAINTAINERS: add missing mm_slot.h file THP section
MAINTAINERS: add missing interval_tree.c to memory mapping section
MAINTAINERS: add missing percpu-internal.h file to per-cpu section
mm/page_alloc: remove trace_mm_alloc_contig_migrate_range_info()
selftests/damon: introduce _common.sh to host shared function
selftests/damon/sysfs.py: test runtime reduction of DAMON parameters
selftests/damon/sysfs.py: test non-default parameters runtime commit
selftests/damon/sysfs.py: generalize DAMON context commit assertion
selftests/damon/sysfs.py: generalize monitoring attributes commit assertion
selftests/damon/sysfs.py: generalize DAMOS schemes commit assertion
selftests/damon/sysfs.py: test DAMOS filters commitment
selftests/damon/sysfs.py: generalize DAMOS scheme commit assertion
selftests/damon/sysfs.py: test DAMOS destinations commitment
...
|
||
|
Linus Torvalds
|
260f6f4fda |
drm for 6.17-rc1
non-drm: rust: - make ETIMEDOUT available - add size constants up to SZ_2G - add DMA coherent allocation bindings mtd: - driver for Intel GPU non-volatile storage i2c - designware quirk for Intel xe core: - atomic helpers: tune enable/disable sequences - add task info to wedge API - refactor EDID quirks - connector: move HDR sink to drm_display_info - fourcc: half-float and 32-bit float formats - mode_config: pass format info to simplify dma-buf: - heaps: Give CMA heap a stable name ci: - add device tree validation and kunit displayport: - change AUX DPCD access probe address - add quirk for DPCD probe - add panel replay definitions - backlight control helpers fbdev: - make CONFIG_FIRMWARE_EDID available on all arches fence: - fix UAF issues format-helper: - improve tests gpusvm: - introduce devmem only flag for allocation - add timeslicing support to GPU SVM ttm: - improve eviction sched: - tracing improvements - kunit improvements - memory leak fixes - reset handling improvements color mgmt: - add hardware gamma LUT handling helpers bridge: - add destroy hook - switch to reference counted drm_bridge allocations - tc358767: convert to devm_drm_bridge_alloc - improve CEC handling panel: - switch to reference counter drm_panel allocations - fwnode panel lookup - Huiling hl055fhv028c support - Raspberry Pi 7" 720x1280 support - edp: KDC KD116N3730A05, N160JCE-ELL CMN, N116BCJ-EAK - simple: AUO P238HAN01 - st7701: Winstar wf40eswaa6mnn0 - visionox: rm69299-shift - Renesas R61307, Renesas R69328 support - DJN HX83112B hdmi: - add CEC handling - YUV420 output support xe: - WildCat Lake support - Enable PanthorLake by default - mark BMG as SRIOV capable - update firmware recommendations - Expose media OA units - aux-bux support for non-volatile memory - MTD intel-dg driver for non-volatile memory - Expose fan control and voltage regulator in sysfs - restructure migration for multi-device - Restore GuC submit UAF fix - make GEM shrinker drm managed - SRIOV VF Post-migration recovery of GGTT nodes - W/A additions/reworks - Prefetch support for svm ranges - Don't allocate managed BO for each policy change - HWMON fixes for BMG - Create LRC BO without VM - PCI ID updates - make SLPC debugfs files optional - rework eviction rejection of bound external BOs - consolidate PAT programming logic for pre/post Xe2 - init changes for flicker-free boot - Enable GuC Dynamic Inhibit Context switch i915: - drm_panic support for i915/xe - initial flip queue off by default for LNL/PNL - Wildcat Lake Display support - Support for DSC fractional link bpp - Support for simultaneous Panel Replay and Adaptive sync - Support for PTL+ double buffer LUT - initial PIPEDMC event handling - drm_panel_follower support - DPLL interface renames - allocate struct intel_display dynamically - flip queue preperation - abstract DRAM detection better - avoid GuC scheduling stalls - remove DG1 force probe requirement - fix MEI interrupt handler on RT kernels - use backlight control helpers for eDP - more shared display code refactoring amdgpu: - add userq slot to INFO ioctl - SR-IOV hibernation support - Suspend improvements - Backlight improvements - Use scaling for non-native eDP modes - cleaner shader updates for GC 9.x - Remove fence slab - SDMA fw checks for userq support - RAS updates - DMCUB updates - DP tunneling fixes - Display idle D3 support - Per queue reset improvements - initial smartmux support amdkfd: - enable KFD on loongarch - mtype fix for ext coherent system memory radeon: - CS validation additional GL extensions - drop console lock during suspend/resume - bump driver version msm: - VM BIND support - CI: infrastructure updates - UBWC single source of truth - decouple GPU and KMS support - DP: rework I/O accessors - DPU: SM8750 support - DSI: SM8750 support - GPU: X1-45 support and speedbin support for X1-85 - MDSS: SM8750 support nova: - register! macro improvements - DMA object abstraction - VBIOS parser + fwsec lookup - sysmem flush page support - falcon: generic falcon boot code and HAL - FWSEC-FRTS: fb setup and load/execute ivpu: - Add Wildcat Lake support - Add turbo flag ast: - improve hardware generations implementation imx: - IMX8qxq Display Controller support lima: - Rockchip RK3528 GPU support nouveau: - fence handling cleanup panfrost: - MT8370 support - bo labeling - 64-bit register access qaic: - add RAS support rockchip: - convert inno_hdmi to a bridge rz-du: - add RZ/V2H(P) support - MIPI-DSI DCS support sitronix: - ST7567 support sun4i: - add H616 support tidss: - add TI AM62L support - AM65x OLDI bridge support bochs: - drm panic support vkms: - YUV and R* format support - use faux device vmwgfx: - fence improvements hyperv: - move out of simple - add drm_panic support -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmiJM/0ACgkQDHTzWXnE hr6MpA/+JJKGdSdrE95QkaMcOZh/3e3areGXZ0V/RrrJXdB4/DoAfQSHhF0H7m7y MhBGVLGNMXq7KHrz28p1MjLHrE1mwmvJ6hZ4J076ed4u9naoCD0m6k5w5wiue+KL HyPR54ADxN0BYmgV0l/B0wj42KsHyTO4x4hdqPJu02V9Dtmx6FCh2ujkOF3p9nbK GMwWDttl4KEKljD0IvQ9YIYJ66crYGx/XmZi7JoWRrS104K/h1u8qZuXBp5jVKTy OZRAVyLdmJqdTOLH7l599MBBcEd/bNV37/LVwF4T5iFunEKOAiyN0QY0OR+IeRVh ZfOv2/gp4UNyIfyahQ7LKLgEilNPGHoPitvDJPvBZxW2UjwXVNvA1QfdK5DAlVRS D5NoFRjlFFCz8/c2hQwlKJ9o7eVgH3/pK0mwR7SPGQTuqzLFCrAfCuzUvg/gV++6 JFqmGKMHeCoxO2o4GMrwjFttStP41usxtV/D+grcbPteNO9UyKJS4C38n4eamJXM a9Sy9APuAb6F0w5+yMItEF7TQifgmhIbm5AZHlxE1KoDQV6TdiIf1Gou5LeDGoL6 OACbXHJPL52tUnfCRpbfI4tE/IVyYsfL01JnvZ5cZZWItXfcIz76ykJri+E0G60g yRl/zkimHKO4B0l/HSzal5xROXr+3VzeWehEiz/ot1VriP5OesA= =n9MO -----END PGP SIGNATURE----- Merge tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel Pull drm updates from Dave Airlie: "Highlights: - Intel xe enable Panthor Lake, started adding WildCat Lake - amdgpu has a bunch of reset improvments along with the usual IP updates - msm got VM_BIND support which is important for vulkan sparse memory - more drm_panic users - gpusvm common code to handle a bunch of core SVM work outside drivers. Detail summary: Changes outside drm subdirectory: - 'shrink_shmem_memory()' for better shmem/hibernate interaction - Rust support infrastructure: - make ETIMEDOUT available - add size constants up to SZ_2G - add DMA coherent allocation bindings - mtd driver for Intel GPU non-volatile storage - i2c designware quirk for Intel xe core: - atomic helpers: tune enable/disable sequences - add task info to wedge API - refactor EDID quirks - connector: move HDR sink to drm_display_info - fourcc: half-float and 32-bit float formats - mode_config: pass format info to simplify dma-buf: - heaps: Give CMA heap a stable name ci: - add device tree validation and kunit displayport: - change AUX DPCD access probe address - add quirk for DPCD probe - add panel replay definitions - backlight control helpers fbdev: - make CONFIG_FIRMWARE_EDID available on all arches fence: - fix UAF issues format-helper: - improve tests gpusvm: - introduce devmem only flag for allocation - add timeslicing support to GPU SVM ttm: - improve eviction sched: - tracing improvements - kunit improvements - memory leak fixes - reset handling improvements color mgmt: - add hardware gamma LUT handling helpers bridge: - add destroy hook - switch to reference counted drm_bridge allocations - tc358767: convert to devm_drm_bridge_alloc - improve CEC handling panel: - switch to reference counter drm_panel allocations - fwnode panel lookup - Huiling hl055fhv028c support - Raspberry Pi 7" 720x1280 support - edp: KDC KD116N3730A05, N160JCE-ELL CMN, N116BCJ-EAK - simple: AUO P238HAN01 - st7701: Winstar wf40eswaa6mnn0 - visionox: rm69299-shift - Renesas R61307, Renesas R69328 support - DJN HX83112B hdmi: - add CEC handling - YUV420 output support xe: - WildCat Lake support - Enable PanthorLake by default - mark BMG as SRIOV capable - update firmware recommendations - Expose media OA units - aux-bux support for non-volatile memory - MTD intel-dg driver for non-volatile memory - Expose fan control and voltage regulator in sysfs - restructure migration for multi-device - Restore GuC submit UAF fix - make GEM shrinker drm managed - SRIOV VF Post-migration recovery of GGTT nodes - W/A additions/reworks - Prefetch support for svm ranges - Don't allocate managed BO for each policy change - HWMON fixes for BMG - Create LRC BO without VM - PCI ID updates - make SLPC debugfs files optional - rework eviction rejection of bound external BOs - consolidate PAT programming logic for pre/post Xe2 - init changes for flicker-free boot - Enable GuC Dynamic Inhibit Context switch i915: - drm_panic support for i915/xe - initial flip queue off by default for LNL/PNL - Wildcat Lake Display support - Support for DSC fractional link bpp - Support for simultaneous Panel Replay and Adaptive sync - Support for PTL+ double buffer LUT - initial PIPEDMC event handling - drm_panel_follower support - DPLL interface renames - allocate struct intel_display dynamically - flip queue preperation - abstract DRAM detection better - avoid GuC scheduling stalls - remove DG1 force probe requirement - fix MEI interrupt handler on RT kernels - use backlight control helpers for eDP - more shared display code refactoring amdgpu: - add userq slot to INFO ioctl - SR-IOV hibernation support - Suspend improvements - Backlight improvements - Use scaling for non-native eDP modes - cleaner shader updates for GC 9.x - Remove fence slab - SDMA fw checks for userq support - RAS updates - DMCUB updates - DP tunneling fixes - Display idle D3 support - Per queue reset improvements - initial smartmux support amdkfd: - enable KFD on loongarch - mtype fix for ext coherent system memory radeon: - CS validation additional GL extensions - drop console lock during suspend/resume - bump driver version msm: - VM BIND support - CI: infrastructure updates - UBWC single source of truth - decouple GPU and KMS support - DP: rework I/O accessors - DPU: SM8750 support - DSI: SM8750 support - GPU: X1-45 support and speedbin support for X1-85 - MDSS: SM8750 support nova: - register! macro improvements - DMA object abstraction - VBIOS parser + fwsec lookup - sysmem flush page support - falcon: generic falcon boot code and HAL - FWSEC-FRTS: fb setup and load/execute ivpu: - Add Wildcat Lake support - Add turbo flag ast: - improve hardware generations implementation imx: - IMX8qxq Display Controller support lima: - Rockchip RK3528 GPU support nouveau: - fence handling cleanup panfrost: - MT8370 support - bo labeling - 64-bit register access qaic: - add RAS support rockchip: - convert inno_hdmi to a bridge rz-du: - add RZ/V2H(P) support - MIPI-DSI DCS support sitronix: - ST7567 support sun4i: - add H616 support tidss: - add TI AM62L support - AM65x OLDI bridge support bochs: - drm panic support vkms: - YUV and R* format support - use faux device vmwgfx: - fence improvements hyperv: - move out of simple - add drm_panic support" * tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel: (1479 commits) drm/tidss: oldi: convert to devm_drm_bridge_alloc() API drm/tidss: encoder: convert to devm_drm_bridge_alloc() drm/amdgpu: move reset support type checks into the caller drm/amdgpu/sdma7: re-emit unprocessed state on ring reset drm/amdgpu/sdma6: re-emit unprocessed state on ring reset drm/amdgpu/sdma5.2: re-emit unprocessed state on ring reset drm/amdgpu/sdma5: re-emit unprocessed state on ring reset drm/amdgpu/gfx12: re-emit unprocessed state on ring reset drm/amdgpu/gfx11: re-emit unprocessed state on ring reset drm/amdgpu/gfx10: re-emit unprocessed state on ring reset drm/amdgpu/gfx9.4.3: re-emit unprocessed state on kcq reset drm/amdgpu/gfx9: re-emit unprocessed state on kcq reset drm/amdgpu: Add WARN_ON to the resource clear function drm/amd/pm: Use cached metrics data on SMUv13.0.6 drm/amd/pm: Use cached data for min/max clocks gpu: nova-core: fix bounds check in PmuLookupTableEntry::new drm/amdgpu: Replace HQD terminology with slots naming drm/amdgpu: Add user queue instance count in HW IP info drm/amd/amdgpu: Add helper functions for isp buffers drm/amd/amdgpu: Initialize swnode for ISP MFD device ... |
||
|
Linus Torvalds
|
22c5696e3f |
Driver core changes for 6.17-rc1
- DEBUGFS
- Remove unneeded debugfs_file_{get,put}() instances
- Remove last remnants of debugfs_real_fops()
- Allow storing non-const void * in struct debugfs_inode_info::aux
- SYSFS
- Switch back to attribute_group::bin_attrs (treewide)
- Switch back to bin_attribute::read()/write() (treewide)
- Constify internal references to 'struct bin_attribute'
- Support cache-ids for device-tree systems
- Add arch hook arch_compact_of_hwid()
- Use arch_compact_of_hwid() to compact MPIDR values on arm64
- Rust
- Device
- Introduce CoreInternal device context (for bus internal methods)
- Provide generic drvdata accessors for bus devices
- Provide Driver::unbind() callbacks
- Use the infrastructure above for auxiliary, PCI and platform
- Implement Device::as_bound()
- Rename Device::as_ref() to Device::from_raw() (treewide)
- Implement fwnode and device property abstractions
- Implement example usage in the Rust platform sample driver
- Devres
- Remove the inner reference count (Arc) and use pin-init instead
- Replace Devres::new_foreign_owned() with devres::register()
- Require T to be Send in Devres<T>
- Initialize the data kept inside a Devres last
- Provide an accessor for the Devres associated Device
- Device ID
- Add support for ACPI device IDs and driver match tables
- Split up generic device ID infrastructure
- Use generic device ID infrastructure in net::phy
- DMA
- Implement the dma::Device trait
- Add DMA mask accessors to dma::Device
- Implement dma::Device for PCI and platform devices
- Use DMA masks from the DMA sample module
- I/O
- Implement abstraction for resource regions (struct resource)
- Implement resource-based ioremap() abstractions
- Provide platform device accessors for I/O (remap) requests
- Misc
- Support fallible PinInit types in Revocable
- Implement Wrapper<T> for Opaque<T>
- Merge pin-init blanket dependencies (for Devres)
- Misc
- Fix OF node leak in auxiliary_device_create()
- Use util macros in device property iterators
- Improve kobject sample code
- Add device_link_test() for testing device link flags
- Fix typo in Documentation/ABI/testing/sysfs-kernel-address_bits
- Hint to prefer container_of_const() over container_of()
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Merge tag 'driver-core-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core updates from Danilo Krummrich:
"debugfs:
- Remove unneeded debugfs_file_{get,put}() instances
- Remove last remnants of debugfs_real_fops()
- Allow storing non-const void * in struct debugfs_inode_info::aux
sysfs:
- Switch back to attribute_group::bin_attrs (treewide)
- Switch back to bin_attribute::read()/write() (treewide)
- Constify internal references to 'struct bin_attribute'
Support cache-ids for device-tree systems:
- Add arch hook arch_compact_of_hwid()
- Use arch_compact_of_hwid() to compact MPIDR values on arm64
Rust:
- Device:
- Introduce CoreInternal device context (for bus internal methods)
- Provide generic drvdata accessors for bus devices
- Provide Driver::unbind() callbacks
- Use the infrastructure above for auxiliary, PCI and platform
- Implement Device::as_bound()
- Rename Device::as_ref() to Device::from_raw() (treewide)
- Implement fwnode and device property abstractions
- Implement example usage in the Rust platform sample driver
- Devres:
- Remove the inner reference count (Arc) and use pin-init instead
- Replace Devres::new_foreign_owned() with devres::register()
- Require T to be Send in Devres<T>
- Initialize the data kept inside a Devres last
- Provide an accessor for the Devres associated Device
- Device ID:
- Add support for ACPI device IDs and driver match tables
- Split up generic device ID infrastructure
- Use generic device ID infrastructure in net::phy
- DMA:
- Implement the dma::Device trait
- Add DMA mask accessors to dma::Device
- Implement dma::Device for PCI and platform devices
- Use DMA masks from the DMA sample module
- I/O:
- Implement abstraction for resource regions (struct resource)
- Implement resource-based ioremap() abstractions
- Provide platform device accessors for I/O (remap) requests
- Misc:
- Support fallible PinInit types in Revocable
- Implement Wrapper<T> for Opaque<T>
- Merge pin-init blanket dependencies (for Devres)
Misc:
- Fix OF node leak in auxiliary_device_create()
- Use util macros in device property iterators
- Improve kobject sample code
- Add device_link_test() for testing device link flags
- Fix typo in Documentation/ABI/testing/sysfs-kernel-address_bits
- Hint to prefer container_of_const() over container_of()"
* tag 'driver-core-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (84 commits)
rust: io: fix broken intra-doc links to `platform::Device`
rust: io: fix broken intra-doc link to missing `flags` module
rust: io: mem: enable IoRequest doc-tests
rust: platform: add resource accessors
rust: io: mem: add a generic iomem abstraction
rust: io: add resource abstraction
rust: samples: dma: set DMA mask
rust: platform: implement the `dma::Device` trait
rust: pci: implement the `dma::Device` trait
rust: dma: add DMA addressing capabilities
rust: dma: implement `dma::Device` trait
rust: net::phy Change module_phy_driver macro to use module_device_table macro
rust: net::phy represent DeviceId as transparent wrapper over mdio_device_id
rust: device_id: split out index support into a separate trait
device: rust: rename Device::as_ref() to Device::from_raw()
arm64: cacheinfo: Provide helper to compress MPIDR value into u32
cacheinfo: Add arch hook to compress CPU h/w id into 32 bits for cache-id
cacheinfo: Set cache 'id' based on DT data
container_of: Document container_of() is not to be used in new code
driver core: auxiliary bus: fix OF node leak
...
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||
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Linus Torvalds
|
fc8f5028eb |
pmdomain core:
- Leave powered-on genpds on until ->sync_state() or late_initcall_sync
- Export a common ->sync_state() helper for genpd providers
- Add generic ->sync_state() support
- Add a bus/driver for genpd provider-devices
- Introduce dev_pm_genpd_is_on() for consumers
pmdomain providers:
- cpuidle-psci: Drop redundant ->sync_state() support
- cpuidle-riscv-sbi: Drop redundant ->sync_state() support
- imx: Set ISI panic write for imx8m-blk-ctrl
- qcom: Add support for Glymur and Milos RPMh power-domains
- qcom: Use of_genpd_sync_state() for power-domains
- rockchip: Add support for the RK3528 variant
- samsung: Fix splash-screen handover by enforcing a ->sync_state()
- sunxi: Add support for Allwinner A523's PCK600 power-controller
- tegra: Opt-out from genpd's common ->sync_state() support for pmc
- thead: Instantiate a GPU power sequencer via the auxiliary bus
- renesas: Move init to postcore_initcalls
- xilinx: Move ->sync_state() support to firmware driver
- xilinx: Use of_genpd_sync_state() for power-domains
pmdomain consumers:
- remoteproc: imx_rproc: Fixup the detect/attach procedure for pre-booted cores
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Merge tag 'pmdomain-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
Pull pmdomain updates from Ulf Hansson:
"pmdomain core:
- Leave powered-on genpds on until ->sync_state() or late_initcall_sync
- Export a common ->sync_state() helper for genpd providers
- Add generic ->sync_state() support
- Add a bus/driver for genpd provider-devices
- Introduce dev_pm_genpd_is_on() for consumers
pmdomain providers:
- cpuidle-psci: Drop redundant ->sync_state() support
- cpuidle-riscv-sbi: Drop redundant ->sync_state() support
- imx: Set ISI panic write for imx8m-blk-ctrl
- qcom: Add support for Glymur and Milos RPMh power-domains
- qcom: Use of_genpd_sync_state() for power-domains
- rockchip: Add support for the RK3528 variant
- samsung: Fix splash-screen handover by enforcing a ->sync_state()
- sunxi: Add support for Allwinner A523's PCK600 power-controller
- tegra: Opt-out from genpd's common ->sync_state() support for pmc
- thead: Instantiate a GPU power sequencer via the auxiliary bus
- renesas: Move init to postcore_initcalls
- xilinx: Move ->sync_state() support to firmware driver
- xilinx: Use of_genpd_sync_state() for power-domains
pmdomain consumers:
- remoteproc: imx_rproc: Fixup the detect/attach procedure for
pre-booted cores"
* tag 'pmdomain-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm: (44 commits)
pmdomain: qcom: rpmhpd: Add Glymur RPMh Power Domains
dt-bindings: power: rpmpd: Add Glymur power domains
remoteproc: imx_rproc: detect and attach to pre-booted remote cores
remoteproc: imx_rproc: skip clock enable when M-core is managed by the SCU
pmdomain: core: introduce dev_pm_genpd_is_on()
pmdomain: ti: Select PM_GENERIC_DOMAINS
pmdomain: sunxi: sun20i-ppu: change to tristate and enable for ARCH_SUNXI
pmdomain: sunxi: add driver for Allwinner A523's PCK-600 power controller
pmdomain: sunxi: sun20i-ppu: add A523 support
pmdomain: samsung: Fix splash-screen handover by enforcing a sync_state
cpuidle: riscv-sbi: Drop redundant sync_state support
cpuidle: psci: Drop redundant sync_state support
pmdomain: core: Leave powered-on genpds on until sync_state
pmdomain: core: Leave powered-on genpds on until late_initcall_sync
pmdomain: core: Default to use of_genpd_sync_state() for genpd providers
driver core: Add dev_set_drv_sync_state()
pmdomain: core: Add common ->sync_state() support for genpd providers
driver core: Export get_dev_from_fwnode()
firmware: xilinx: Use of_genpd_sync_state()
firmware: xilinx: Don't share zynqmp_pm_init_finalize()
...
|
||
|
Linus Torvalds
|
5339a2aefc |
regmap: Updates for v6.17
A very quiet release for regmap this time, just two cleanup patches and
one almost cleanup patch which saves individual MMIO regmaps flagging
themselves as having fast I/O.
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Merge tag 'regmap-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"A very quiet release for regmap this time, just two cleanup patches
and one almost cleanup patch which saves individual MMIO regmaps
flagging themselves as having fast I/O"
* tag 'regmap-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: Annotate that MMIO implies fast IO
regmap: get rid of redundant debugfs_file_{get,put}()
regmap: kunit: Constify regmap_range_cfg array
|
||
|
Linus Torvalds
|
53edfecef6 |
Power management updates for 6.17-rc1
- Fix two initialization ordering issues in the cpufreq core and a
governor initialization error path in it, and clean it up (Lifeng
Zheng)
- Add Granite Rapids support in no-HWP mode to the intel_pstate cpufreq
driver (Li RongQing)
- Make intel_pstate always use HWP_DESIRED_PERF when operating in the
passive mode (Rafael Wysocki)
- Allow building the tegra124 cpufreq driver as a module (Aaron Kling)
- Do minor cleanups for Rust cpufreq and cpumask APIs and fix MAINTAINERS
entry for cpu.rs (Abhinav Ananthu, Ritvik Gupta, Lukas Bulwahn)
- Clean up assorted cpufreq drivers (Arnd Bergmann, Dan Carpenter,
Krzysztof Kozlowski, Sven Peter, Svyatoslav Ryhel, Lifeng Zheng)
- Add the NEED_UPDATE_LIMITS flag to the CPPC cpufreq driver (Prashant
Malani)
- Fix minimum performance state label error in the amd-pstate driver
documentation (Shouye Liu)
- Add the CPUFREQ_GOV_STRICT_TARGET flag to the userspace cpufreq
governor and explain HW coordination influence on it in the
documentation (Shashank Balaji)
- Fix opencoded for_each_cpu() in idle_state_valid() in the DT cpuidle
driver (Yury Norov)
- Remove info about non-existing QoS interfaces from the PM QoS
documentation (Ulf Hansson)
- Use c_* types via kernel prelude in Rust for OPP (Abhinav Ananthu)
- Add HiSilicon uncore frequency scaling driver to devfreq (Jie Zhan)
- Allow devfreq drivers to add custom sysfs ABIs (Jie Zhan)
- Simplify the sun8i-a33-mbus devfreq driver by using more devm
functions (Uwe Kleine-König)
- Fix an index typo in trans_stat() in devfreq (Chanwoo Choi)
- Check devfreq governor before using governor->name (Lifeng Zheng)
- Remove a redundant devfreq_get_freq_range() call from
devfreq_add_device() (Lifeng Zheng)
- Limit max_freq with scaling_min_freq in devfreq (Lifeng Zheng)
- Replace sscanf() with kstrtoul() in set_freq_store() (Lifeng Zheng)
- Extend the asynchronous suspend and resume of devices to handle
suppliers like parents and consumers like children (Rafael Wysocki)
- Make pm_runtime_force_resume() work for drivers that set the
DPM_FLAG_SMART_SUSPEND flag and allow PCI drivers and drivers that
collaborate with the general ACPI PM domain to set it (Rafael
Wysocki)
- Add kernel parameter to disable asynchronous suspend/resume of
devices (Tudor Ambarus)
- Drop redundant might_sleep() calls from some functions in the device
suspend/resume core code (Zhongqiu Han)
- Fix the handling of monitors connected right before waking up the
system from sleep (tuhaowen)
- Clean up MAINTAINERS entries for suspend and hibernation (Rafael
Wysocki)
- Fix error code path in the KEXEC_JUMP flow and drop a redundant
pm_restore_gfp_mask() call from it (Rafael Wysocki)
- Rearrange suspend/resume error handling in the core device suspend
and resume code (Rafael Wysocki)
- Fix up white space that does not follow coding style in the
hibernation core code (Darshan Rathod)
- Document return values of suspend-related API functions in the
runtime PM framework (Sakari Ailus)
- Mark last busy stamp in multiple autosuspend-related functions in the
runtime PM framework and update its documentation (Sakari Ailus)
- Take active children into account in pm_runtime_get_if_in_use() for
consistency (Rafael Wysocki)
- Fix NULL pointer dereference in get_pd_power_uw() in the dtpm_cpu
power capping driver (Sivan Zohar-Kotzer)
- Add support for the Bartlett Lake platform to the Intel RAPL power
capping driver (Qiao Wei)
- Add PL4 support for Panther Lake to the intel_rapl_msr power capping
driver (Zhang Rui)
- Update contact information in the PM ABI docs and maintainer
information in the power domains DT binding (Rafael Wysocki)
- Update PM header inclusions to follow the IWYU (Include What You Use)
principle (Andy Shevchenko)
- Add flags to specify power on attach/detach for PM domains, make the
driver core detach PM domains in device_unbind_cleanup(), and drop
the dev_pm_domain_detach() call from the platform bus type (Claudiu
Beznea)
- Improve Python binding's Makefile for cpupower (John B. Wyatt IV)
- Fix printing of CORE, CPU fields in cpupower-monitor (Gautham Shenoy)
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Merge tag 'pm-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"As is tradition, cpufreq is the part with the largest number of
updates that include core fixes and cleanups as well as updates of
several assorted drivers, but there are also quite a few updates
related to system sleep, mostly focused on asynchronous suspend and
resume of devices and on making the integration of system suspend
and resume with runtime PM easier.
Runtime PM is also updated to allow some code duplication in drivers
to be eliminated going forward and to work more consistently overall
in some cases.
Apart from that, there are some driver core updates related to PM
domains that should help to address ordering issues with devm_ cleanup
routines relying on PM domains, some assorted devfreq updates
including core fixes and cleanups, tooling updates, and documentation
and MAINTAINERS updates.
Specifics:
- Fix two initialization ordering issues in the cpufreq core and a
governor initialization error path in it, and clean it up (Lifeng
Zheng)
- Add Granite Rapids support in no-HWP mode to the intel_pstate
cpufreq driver (Li RongQing)
- Make intel_pstate always use HWP_DESIRED_PERF when operating in the
passive mode (Rafael Wysocki)
- Allow building the tegra124 cpufreq driver as a module (Aaron
Kling)
- Do minor cleanups for Rust cpufreq and cpumask APIs and fix
MAINTAINERS entry for cpu.rs (Abhinav Ananthu, Ritvik Gupta, Lukas
Bulwahn)
- Clean up assorted cpufreq drivers (Arnd Bergmann, Dan Carpenter,
Krzysztof Kozlowski, Sven Peter, Svyatoslav Ryhel, Lifeng Zheng)
- Add the NEED_UPDATE_LIMITS flag to the CPPC cpufreq driver
(Prashant Malani)
- Fix minimum performance state label error in the amd-pstate driver
documentation (Shouye Liu)
- Add the CPUFREQ_GOV_STRICT_TARGET flag to the userspace cpufreq
governor and explain HW coordination influence on it in the
documentation (Shashank Balaji)
- Fix opencoded for_each_cpu() in idle_state_valid() in the DT
cpuidle driver (Yury Norov)
- Remove info about non-existing QoS interfaces from the PM QoS
documentation (Ulf Hansson)
- Use c_* types via kernel prelude in Rust for OPP (Abhinav Ananthu)
- Add HiSilicon uncore frequency scaling driver to devfreq (Jie Zhan)
- Allow devfreq drivers to add custom sysfs ABIs (Jie Zhan)
- Simplify the sun8i-a33-mbus devfreq driver by using more devm
functions (Uwe Kleine-König)
- Fix an index typo in trans_stat() in devfreq (Chanwoo Choi)
- Check devfreq governor before using governor->name (Lifeng Zheng)
- Remove a redundant devfreq_get_freq_range() call from
devfreq_add_device() (Lifeng Zheng)
- Limit max_freq with scaling_min_freq in devfreq (Lifeng Zheng)
- Replace sscanf() with kstrtoul() in set_freq_store() (Lifeng Zheng)
- Extend the asynchronous suspend and resume of devices to handle
suppliers like parents and consumers like children (Rafael Wysocki)
- Make pm_runtime_force_resume() work for drivers that set the
DPM_FLAG_SMART_SUSPEND flag and allow PCI drivers and drivers that
collaborate with the general ACPI PM domain to set it (Rafael
Wysocki)
- Add kernel parameter to disable asynchronous suspend/resume of
devices (Tudor Ambarus)
- Drop redundant might_sleep() calls from some functions in the
device suspend/resume core code (Zhongqiu Han)
- Fix the handling of monitors connected right before waking up the
system from sleep (tuhaowen)
- Clean up MAINTAINERS entries for suspend and hibernation (Rafael
Wysocki)
- Fix error code path in the KEXEC_JUMP flow and drop a redundant
pm_restore_gfp_mask() call from it (Rafael Wysocki)
- Rearrange suspend/resume error handling in the core device suspend
and resume code (Rafael Wysocki)
- Fix up white space that does not follow coding style in the
hibernation core code (Darshan Rathod)
- Document return values of suspend-related API functions in the
runtime PM framework (Sakari Ailus)
- Mark last busy stamp in multiple autosuspend-related functions in
the runtime PM framework and update its documentation (Sakari
Ailus)
- Take active children into account in pm_runtime_get_if_in_use() for
consistency (Rafael Wysocki)
- Fix NULL pointer dereference in get_pd_power_uw() in the dtpm_cpu
power capping driver (Sivan Zohar-Kotzer)
- Add support for the Bartlett Lake platform to the Intel RAPL power
capping driver (Qiao Wei)
- Add PL4 support for Panther Lake to the intel_rapl_msr power
capping driver (Zhang Rui)
- Update contact information in the PM ABI docs and maintainer
information in the power domains DT binding (Rafael Wysocki)
- Update PM header inclusions to follow the IWYU (Include What You
Use) principle (Andy Shevchenko)
- Add flags to specify power on attach/detach for PM domains, make
the driver core detach PM domains in device_unbind_cleanup(), and
drop the dev_pm_domain_detach() call from the platform bus type
(Claudiu Beznea)
- Improve Python binding's Makefile for cpupower (John B. Wyatt IV)
- Fix printing of CORE, CPU fields in cpupower-monitor (Gautham
Shenoy)"
* tag 'pm-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (75 commits)
cpufreq: CPPC: Mark driver with NEED_UPDATE_LIMITS flag
PM: docs: Use my kernel.org address in ABI docs and DT bindings
PM: hibernate: Fix up white space that does not follow coding style
PM: sleep: Rearrange suspend/resume error handling in the core
Documentation: amd-pstate:fix minimum performance state label error
PM: runtime: Take active children into account in pm_runtime_get_if_in_use()
kexec_core: Drop redundant pm_restore_gfp_mask() call
kexec_core: Fix error code path in the KEXEC_JUMP flow
PM: sleep: Clean up MAINTAINERS entries for suspend and hibernation
drivers: cpufreq: add Tegra114 support
rust: cpumask: Replace `MaybeUninit` and `mem::zeroed` with `Opaque` APIs
cpufreq: Exit governor when failed to start old governor
cpufreq: Move the check of cpufreq_driver->get into cpufreq_verify_current_freq()
cpufreq: Init policy->rwsem before it may be possibly used
cpufreq: Initialize cpufreq-based frequency-invariance later
cpufreq: Remove duplicate check in __cpufreq_offline()
cpufreq: Contain scaling_cur_freq.attr in cpufreq_attrs
cpufreq: intel_pstate: Add Granite Rapids support in no-HWP mode
cpufreq: intel_pstate: Always use HWP_DESIRED_PERF in passive mode
PM / devfreq: Add HiSilicon uncore frequency scaling driver
...
|
||
|
Linus Torvalds
|
117eab5c6e |
vfs-6.17-rc1.coredump
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Merge tag 'vfs-6.17-rc1.coredump' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull coredump updates from Christian Brauner:
"This contains an extension to the coredump socket and a proper rework
of the coredump code.
- This extends the coredump socket to allow the coredump server to
tell the kernel how to process individual coredumps. This allows
for fine-grained coredump management. Userspace can decide to just
let the kernel write out the coredump, or generate the coredump
itself, or just reject it.
* COREDUMP_KERNEL
The kernel will write the coredump data to the socket.
* COREDUMP_USERSPACE
The kernel will not write coredump data but will indicate to the
parent that a coredump has been generated. This is used when
userspace generates its own coredumps.
* COREDUMP_REJECT
The kernel will skip generating a coredump for this task.
* COREDUMP_WAIT
The kernel will prevent the task from exiting until the coredump
server has shutdown the socket connection.
The flexible coredump socket can be enabled by using the "@@"
prefix instead of the single "@" prefix for the regular coredump
socket:
@@/run/systemd/coredump.socket
- Cleanup the coredump code properly while we have to touch it
anyway.
Split out each coredump mode in a separate helper so it's easy to
grasp what is going on and make the code easier to follow. The core
coredump function should now be very trivial to follow"
* tag 'vfs-6.17-rc1.coredump' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (31 commits)
cleanup: add a scoped version of CLASS()
coredump: add coredump_skip() helper
coredump: avoid pointless variable
coredump: order auto cleanup variables at the top
coredump: add coredump_cleanup()
coredump: auto cleanup prepare_creds()
cred: add auto cleanup method
coredump: directly return
coredump: auto cleanup argv
coredump: add coredump_write()
coredump: use a single helper for the socket
coredump: move pipe specific file check into coredump_pipe()
coredump: split pipe coredumping into coredump_pipe()
coredump: move core_pipe_count to global variable
coredump: prepare to simplify exit paths
coredump: split file coredumping into coredump_file()
coredump: rename do_coredump() to vfs_coredump()
selftests/coredump: make sure invalid paths are rejected
coredump: validate socket path in coredump_parse()
coredump: don't allow ".." in coredump socket path
...
|
||
|
Rafael J. Wysocki
|
40c2819955 |
Merge branches 'pm-misc' and 'pm-tools'
Merge miscellaneous power management updates and cpupower utility updates for 6.17-rc1: - Update contact information in the PM ABI docs and maintainer information in the power domains DT binding (Rafael Wysocki) - Update PM header inclusions to follow the IWYU (Include What You Use) principle (Andy Shevchenko) - Add flags to specify power on attach/detach for PM domains, make the driver core detach PM domains in device_unbind_cleanup(), and drop the dev_pm_domain_detach() call from the platform bus type (Claudiu Beznea) - Improve Python binding's Makefile for cpupower (John B. Wyatt IV) - Fix printing of CORE, CPU fields in cpupower-monitor (Gautham Shenoy) * pm-misc: PM: docs: Use my kernel.org address in ABI docs and DT bindings driver core: platform: Drop dev_pm_domain_detach() call PM: domains: Detach on device_unbind_cleanup() PM: domains: Add flags to specify power on attach/detach PM: Don't use "proxy" headers * pm-tools: cpupower: Improve Python binding's Makefile pm: cpupower: Fix printing of CORE, CPU fields in cpupower-monitor pm: cpupower: Fix the snapshot-order of tsc,mperf, clock in mperf_stop() |
||
|
Rafael J. Wysocki
|
3b4d4c98e5 |
Merge branches 'pm-runtime' and 'pm-powercap'
Merge runtime PM updates and power capping updates for 6.17-rc1: - Document return values of suspend-related API functions in the runtime PM framework (Sakari Ailus) - Mark last busy stamp in multiple autosuspend-related functions in the runtime PM framework and update its documentation (Sakari Ailus) - Take active children into account in pm_runtime_get_if_in_use() for consistency (Rafael Wysocki) - Fix NULL pointer dereference in get_pd_power_uw() in the dtpm_cpu power capping driver (Sivan Zohar-Kotzer) - Add support for the Bartlett Lake platform to the Intel RAPL power capping driver (Qiao Wei) - Add PL4 support for Panther Lake to the intel_rapl_msr power capping driver (Zhang Rui) * pm-runtime: PM: runtime: Take active children into account in pm_runtime_get_if_in_use() Documentation: PM: *_autosuspend() functions update last busy time PM: runtime: Mark last busy stamp in pm_request_autosuspend() PM: runtime: Mark last busy stamp in pm_runtime_autosuspend() PM: runtime: Mark last busy stamp in pm_runtime_put_sync_autosuspend() PM: runtime: Mark last busy stamp in pm_runtime_put_autosuspend() PM: runtime: Document return values of suspend-related API functions * pm-powercap: powercap: dtpm_cpu: Fix NULL pointer dereference in get_pd_power_uw() powercap: intel_rapl: Add support for Bartlett Lake platform powercap: intel_rapl_msr: Add PL4 support for Panther Lake |
||
|
Linus Torvalds
|
875dd235ce |
regmap: Fix for v6.16
A fix for a memory leak when we get an error during regmap init for a bus that uses free_on_exit to clean up device specific data. -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmh8+e8ACgkQJNaLcl1U h9BoEgf/f3xq1/K5IpXY94py7SYp/B0BqW34MioS6pmcqm9b9K4HPislBYRpjs9X pufXp3T9f4iqWoemLEky+Z3y6Z+C75IeOoav/OmpBEOOEBXIxHnxoXS+Yl6SWxU+ 0rgbk2HJLYaozYBOn8iHE1ODeEitRsFTHoOT8bX14YVj8vbWSUdXFASdOmENi4Vp q9MfEpT1eN0BnBMIBBN1QiizQuvYtr5nHLdmvQMjUgByq8q+kRsjdnVoIOFRqEAr BIfwqqne+hVG7S03NEMIVIS1t2tYepKKyaHcjrO7qwEwU6i9rfg/VmWuOSfZZIns 2OmBRHCgySv3Zc4rtTVcpxFmLW+TTA== =f82u -----END PGP SIGNATURE----- Merge tag 'regmap-fix-v6.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap Pull regmap fix from Mark Brown: "A fix for a memory leak when we get an error during regmap init for a bus that uses free_on_exit to clean up device specific data" * tag 'regmap-fix-v6.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: fix potential memory leak of regmap_bus |
||
|
Davidlohr Bueso
|
b980077899 |
mm: introduce per-node proactive reclaim interface
This adds support for allowing proactive reclaim in general on a NUMA
system. A per-node interface extends support for beyond a memcg-specific
interface, respecting the current semantics of memory.reclaim: respecting
aging LRU and not supporting artificially triggering eviction on nodes
belonging to non-bottom tiers.
This patch allows userspace to do:
echo "512M swappiness=10" > /sys/devices/system/node/nodeX/reclaim
One of the premises for this is to semantically align as best as possible
with memory.reclaim. During a brief time memcg did support nodemask until
|
||
|
Vlastimil Babka
|
8356a5a3b0 |
mm, vmstat: remove the NR_WRITEBACK_TEMP node_stat_item counter
The only user of the counter (FUSE) was removed in commit
|
||
|
Rafael J. Wysocki
|
dbd4bccd96 |
PM: sleep: Rearrange suspend/resume error handling in the core
Notice that device_suspend_noirq(), device_suspend_late() and device_suspend() all set async_error on errors, so they don't really need to return a value. Accordingly, make them all void and use async_error in their callers instead of their return values. Moreover, since async_error is updated concurrently without locking during asynchronous suspend and resume processing, use READ_ONCE() and WRITE_ONCE() for accessing it in those places to ensure that all of the accesses will be carried out as expected. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Saravana Kannan <saravanak@google.com> Link: https://patch.msgid.link/6198088.lOV4Wx5bFT@rjwysocki.net |
||
|
Rafael J. Wysocki
|
7c1f7c22e6 | Merge back earlier material related to system sleep | ||
|
James Morse
|
9a697eff25 |
cacheinfo: Add arch hook to compress CPU h/w id into 32 bits for cache-id
Filesystems like resctrl use the cache-id exposed via sysfs to identify groups of CPUs. The value is also used for PCIe cache steering tags. On DT platforms cache-id is not something that is described in the device-tree, but instead generated from the smallest CPU h/w id of the CPUs associated with that cache. CPU h/w ids may be larger than 32 bits. Add a hook to allow architectures to compress the value from the devicetree into 32 bits. Returning the same value is always safe as cache_of_set_id() will stop if a value larger than 32 bits is seen. For example, on arm64 the value is the MPIDR affinity register, which only has 32 bits of affinity data, but spread accross the 64 bit field. An arch-specific bit swizzle gives a 32 bit value. Signed-off-by: James Morse <james.morse@arm.com> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Reviewed-by: Gavin Shan <gshan@redhat.com> Link: https://lore.kernel.org/r/20250711182743.30141-3-james.morse@arm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Rob Herring
|
6b585f4ce6 |
cacheinfo: Set cache 'id' based on DT data
Use the minimum CPU h/w id of the CPUs associated with the cache for the cache 'id'. This will provide a stable id value for a given system. As we need to check all possible CPUs, we can't use the shared_cpu_map which is just online CPUs. As there's not a cache to CPUs mapping in DT, we have to walk all CPU nodes and then walk cache levels. The cache_id exposed to user-space has historically been 32 bits, and is too late to change. This value is parsed into a u32 by user-space libraries such as libvirt: https://github.com/libvirt/libvirt/blob/master/src/util/virresctrl.c#L1588 Give up on assigning cache-id's if a CPU h/w id greater than 32 bits is found. match_cache_node() does not make use of the __free() cleanup helpers because of_find_next_cache_node(prev) does not drop a reference to prev, and its too easy to accidentally drop the reference on cpu, which belongs to for_each_of_cpu_node(). Cc: "Rafael J. Wysocki" <rafael@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org> [ ben: converted to use the __free cleanup idiom ] Signed-off-by: Ben Horgan <ben.horgan@arm.com> [ morse: Add checks to give up if a value larger than 32 bits is seen. ] Signed-off-by: James Morse <james.morse@arm.com> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Reviewed-by: Gavin Shan <gshan@redhat.com> Link: https://lore.kernel.org/r/20250711182743.30141-2-james.morse@arm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Johan Hovold
|
6beb4ec0f9 |
driver core: auxiliary bus: fix OF node leak
Make sure to drop the OF node reference taken when creating an auxiliary
device using auxiliary_device_create() when the device is later
released.
Fixes:
|
||
|
Rafael J. Wysocki
|
51888393cc |
PM: runtime: Take active children into account in pm_runtime_get_if_in_use()
For all practical purposes, there is no difference between the situation in which a given device is not ignoring children and its active child count is nonzero and the situation in which its runtime PM usage counter is nonzero. However, pm_runtime_get_if_in_use() will only increment the device's usage counter and return 1 in the latter case. For consistency, make it do so in the former case either by adjusting pm_runtime_get_conditional() and update the related kerneldoc comments accordingly. Fixes: |
||
|
Rafael J. Wysocki
|
ebd6884167 |
PM: sleep: Update power.completion for all devices on errors
After commit |
||
|
Oscar Salvador
|
67929de108 |
mm,memory_hotplug: implement numa node notifier
There are at least six consumers of hotplug_memory_notifier that what they really are interested in is whether any numa node changed its state, e.g: going from having memory to not having memory and vice versa. Implement a specific notifier for numa nodes when their state gets changed, which will later be used by those consumers that are only interested in numa node state changes. Add documentation as well. [dan.carpenter@linaro.org: set failure reason in offline_pages()] Link: https://lkml.kernel.org/r/be4fd31b-7d09-46b0-8329-6d0464ffa7a5@sabinyo.mountain Link: https://lkml.kernel.org/r/20250616135158.450136-4-osalvador@suse.de Signed-off-by: Oscar Salvador <osalvador@suse.de> Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Harry Yoo <harry.yoo@oracle.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: David Hildenbrand <david@redhat.com> Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Rakie Kim <rakie.kim@sk.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
87cf461cd3 |
Power management fix for 6.16-rc6
Fix a coding mistake in a previous fix related to system suspend and hibernation merged recently. -----BEGIN PGP SIGNATURE----- iQFGBAABCAAwFiEEcM8Aw/RY0dgsiRUR7l+9nS/U47UFAmhw2k4SHHJqd0Byand5 c29ja2kubmV0AAoJEO5fvZ0v1OO1RMYH/2qgZ/ocUAh8SL1y4rhj19O5J5ihZtZr Joh3zzUirX6bhxlmP9NHtLNBFNSma72rI2WUDPz9tA6RxfY/lV9CssXCIYN/w8YU xsso4X0cOulxTvR0hiS6DcXXtFg1X/OgV6w+Pv5t1pLvnsIcCRJtGFfGU909kSKV yap6DMbSiV3WC8B03Az3B6OUFBTaCuvt1ghs2I9F8O4b6/WuUrriYIAb3/MgWqQl YA/STieJWUo/hgpIvC09x/Raf8cztIqEi98DCADzhU43wZNR/t8ahlOnlIPK/ujh TnJHZdpVJUDS62reqaZHnQPxGnfltOPAqlWoM1azo8SCeouhEb1fOXM= =TocQ -----END PGP SIGNATURE----- Merge tag 'pm-6.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fix from Rafael Wysocki: "Fix a coding mistake in a previous fix related to system suspend and hibernation merged recently" * tag 'pm-6.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM: sleep: Call pm_restore_gfp_mask() after dpm_resume() |
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Rafael J. Wysocki
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fd4716a151 | Merge back earlier changes related to system suspend and hibernation | ||
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Samuel Zhang
|
c2aaddbd2d |
PM: hibernate: add new api pm_hibernate_is_recovering()
dev_pm_ops.thaw() is called in following cases: * normal case: after hibernation image has been created. * error case 1: creation of a hibernation image has failed. * error case 2: restoration from a hibernation image has failed. For normal case, it is called mainly for resume storage devices for saving the hibernation image. Other devices that are not involved in the image saving do not need to resume the device. But since there's no api to know which case thaw() is called, device drivers can't conditionally resume device in thaw(). The new pm_hibernate_is_recovering() is such a api to query if thaw() is called in normal case. Signed-off-by: Samuel Zhang <guoqing.zhang@amd.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Link: https://lore.kernel.org/r/20250710062313.3226149-5-guoqing.zhang@amd.com Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> |
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Donet Tom
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a5352f8a40 |
drivers/base/node: rename __register_one_node() to register_one_node()
The register_one_node() function was a simple wrapper around __register_one_node(). To simplify the code, register_one_node() has been removed, and __register_one_node() has been renamed to register_one_node(). Link: https://lkml.kernel.org/r/8262cd0f44eeb048a1fcd3ac8382760d7f7dea60.1748452242.git.donettom@linux.ibm.com Signed-off-by: Donet Tom <donettom@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Donet Tom
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10f09d82f8 |
drivers/base/node: rename register_memory_blocks_under_node() and remove context argument
The function register_memory_blocks_under_node() is now only called from the memory hotplug path, as register_memory_blocks_under_node_early() handles registration during early boot. Therefore, the context argument used to differentiate between early boot and hotplug is no longer needed and was removed. Since the function is only called from the hotplug path, we renamed register_memory_blocks_under_node() to register_memory_blocks_under_node_hotplug() Link: https://lkml.kernel.org/r/907c22292b0ee4975107876efc875c75c11badd9.1748452242.git.donettom@linux.ibm.com Signed-off-by: Donet Tom <donettom@linux.ibm.com> Acked-by: Oscar Salvador <osalvador@suse.de> Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Donet Tom
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69e944b160 |
drivers/base/node: remove register_mem_block_under_node_early()
The function register_mem_block_under_node_early() is no longer used, as register_memory_blocks_under_node_early() now handles memory block registration during early boot. Removed register_mem_block_under_node_early() and get_nid_for_pfn(), the latter was only used by the former. Link: https://lkml.kernel.org/r/22e0c5d20f1d33a91d0436ad22d96628cf084d1b.1748452242.git.donettom@linux.ibm.com Signed-off-by: Donet Tom <donettom@linux.ibm.com> Acked-by: Oscar Salvador <osalvador@suse.de> Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Donet Tom
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4f745def81 |
drivers/base/node: optimize memory block registration to reduce boot time
Patch series "drivers/base/node.c: optimization and cleanups", v7.
This patch (of 7)
During node device initialization, `memory blocks` are registered under
each NUMA node. The `memory blocks` to be registered are identified using
the node's start and end PFNs, which are obtained from the node's pg_data
However, not all PFNs within this range necessarily belong to the same
node—some may belong to other nodes. Additionally, due to the
discontiguous nature of physical memory, certain sections within a `memory
block` may be absent.
As a result, `memory blocks` that fall between a node's start and end PFNs
may span across multiple nodes, and some sections within those blocks may
be missing. `Memory blocks` have a fixed size, which is architecture
dependent.
Due to these considerations, the memory block registration is currently
performed as follows:
for_each_online_node(nid):
start_pfn = pgdat->node_start_pfn;
end_pfn = pgdat->node_start_pfn + node_spanned_pages;
for_each_memory_block_between(PFN_PHYS(start_pfn), PFN_PHYS(end_pfn))
mem_blk = memory_block_id(pfn_to_section_nr(pfn));
pfn_mb_start=section_nr_to_pfn(mem_blk->start_section_nr)
pfn_mb_end = pfn_start + memory_block_pfns - 1
for (pfn = pfn_mb_start; pfn < pfn_mb_end; pfn++):
if (get_nid_for_pfn(pfn) != nid):
continue;
else
do_register_memory_block_under_node(nid, mem_blk,
MEMINIT_EARLY);
Here, we derive the start and end PFNs from the node's pg_data, then
determine the memory blocks that may belong to the node. For each `memory
block` in this range, we inspect all PFNs it contains and check their
associated NUMA node ID. If a PFN within the block matches the current
node, the memory block is registered under that node.
If CONFIG_DEFERRED_STRUCT_PAGE_INIT is enabled, get_nid_for_pfn() performs
a binary search in the `memblock regions` to determine the NUMA node ID
for a given PFN. If it is not enabled, the node ID is retrieved directly
from the struct page.
On large systems, this process can become time-consuming, especially since
we iterate over each `memory block` and all PFNs within it until a match
is found. When CONFIG_DEFERRED_STRUCT_PAGE_INIT is enabled, the
additional overhead of the binary search increases the execution time
significantly, potentially leading to soft lockups during boot.
In this patch, we iterate over `memblock region` to identify the `memory
blocks` that belong to the current NUMA node. `memblock regions` are
contiguous memory ranges, each associated with a single NUMA node, and
they do not span across multiple nodes.
for_each_memory_region(r): // r => region
if (!node_online(r->nid)):
continue;
else
for_each_memory_block_between(r->base, r->base + r->size - 1):
do_register_memory_block_under_node(r->nid, mem_blk, MEMINIT_EARLY);
We iterate over all memblock regions, and if the node associated with the
region is online, we calculate the start and end memory blocks based on
the region's start and end PFNs. We then register all the memory blocks
within that range under the region node.
Test Results on My system with 32TB RAM
=======================================
1. Boot time with CONFIG_DEFERRED_STRUCT_PAGE_INIT enabled.
Without this patch
------------------
Startup finished in 1min 16.528s (kernel)
With this patch
---------------
Startup finished in 17.236s (kernel) - 78% Improvement
2. Boot time with CONFIG_DEFERRED_STRUCT_PAGE_INIT disabled.
Without this patch
------------------
Startup finished in 28.320s (kernel)
With this patch
---------------
Startup finished in 15.621s (kernel) - 46% Improvement
[donettom@linux.ibm.com: restore removed extra line]
Link: https://lkml.kernel.org/r/20250609140354.467908-1-donettom@linux.ibm.com
Link: https://lkml.kernel.org/r/2a0a05c2dffc62a742bf1dd030098be4ce99be28.1748452241.git.donettom@linux.ibm.com
Link: https://lkml.kernel.org/r/2a0a05c2dffc62a742bf1dd030098be4ce99be28.1748452241.git.donettom@linux.ibm.com
Signed-off-by: Donet Tom <donettom@linux.ibm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Rafael J. Wysocki
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ec3cae6394 |
PM: sleep: Call pm_restore_gfp_mask() after dpm_resume()
Commit |
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Al Viro
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8009fb751d |
regmap: get rid of redundant debugfs_file_{get,put}()
pointless in ->read()/->write() of file_operations used only via debugfs_create_file() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Link: https://lore.kernel.org/r/20250702211602.GC3406663@ZenIV Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Ulf Hansson
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9a4681a485 |
driver core: Export get_dev_from_fwnode()
It has turned out get_dev_from_fwnode() is useful at a few other places outside of the driver core, as in gpiolib.c for example. Therefore let's make it available as a common helper function. Suggested-by: Saravana Kannan <saravanak@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Tested-by: Hiago De Franco <hiago.franco@toradex.com> # Colibri iMX8X Tested-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> # TI AM62A,Xilinx ZynqMP ZCU106 Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20250701114733.636510-18-ulf.hansson@linaro.org |
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Linus Torvalds
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6e9128ff9d |
Add the mitigation logic for Transient Scheduler Attacks (TSA)
TSA are new aspeculative side channel attacks related to the execution timing of instructions under specific microarchitectural conditions. In some cases, an attacker may be able to use this timing information to infer data from other contexts, resulting in information leakage. Add the usual controls of the mitigation and integrate it into the existing speculation bugs infrastructure in the kernel. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmhSsvQACgkQEsHwGGHe VUrWNw//V+ZabYq3Nnvh4jEe6Altobnpn8bOIWmcBx6I3xuuArb9bLqcbKerDIcC POVVW6zrdNigDe/U4aqaJXE7qCRX55uTYbhp8OLH0zzqX3Pjl/hUnEXWtMtlXj/G CIM5mqjqEFp5JRGXetdjjuvjG1IPf+CbjKqj2WXbi//T6F3LiAFxkzdUhd+clBF/ ztWchjwUmqU0WJd6+Smb8ZnvWrLoZuOFldjhFad820B7fqkdJhzjHMmwBHJKUEZu oABv8B0/4IALrx6LenCspWS4OuTOGG7DKyIgzitByXygXXb4L3ZUKpuqkxBU7hFx bscwtOP7e5HIYAekx6ZSLZoZpYQXr1iH0aRGrjwapi3ASIpUwI0UA9ck2PdGo0IY 0GvmN0vbybskewBQyG819BM+DCau5pOLWuL7cYmaD2eTNoOHOknMDNlO8VzXqJxa NnignSuEWFm2vNV1FXEav2YbVjlanV6JleiPDGBe5Xd9dnxZTvg9HuP2NkYio4dZ mb/kEU/kTcN8nWh0Q96tX45kmj0vCbBgrSQkmUpyAugp38n69D1tp3ii9D/hyQFH hKGcFC9m+rYVx1NLyAxhTGxaEqF801d5Qawwud8HsnQudTpCdSXD9fcBg9aCbWEa FymtDpIeUQrFAjDpVEp6Syh3odKvLXsGEzL+DVvqKDuA8r6DxFo= =2cLl -----END PGP SIGNATURE----- Merge tag 'tsa_x86_bugs_for_6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull CPU speculation fixes from Borislav Petkov: "Add the mitigation logic for Transient Scheduler Attacks (TSA) TSA are new aspeculative side channel attacks related to the execution timing of instructions under specific microarchitectural conditions. In some cases, an attacker may be able to use this timing information to infer data from other contexts, resulting in information leakage. Add the usual controls of the mitigation and integrate it into the existing speculation bugs infrastructure in the kernel" * tag 'tsa_x86_bugs_for_6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/process: Move the buffer clearing before MONITOR x86/microcode/AMD: Add TSA microcode SHAs KVM: SVM: Advertise TSA CPUID bits to guests x86/bugs: Add a Transient Scheduler Attacks mitigation x86/bugs: Rename MDS machinery to something more generic |
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Claudiu Beznea
|
ba2ebd52a2 |
driver core: platform: Drop dev_pm_domain_detach() call
On the Renesas RZ/G3S (and other Renesas SoCs, e.g., RZ/G2{L, LC, UL}),
clocks are managed through PM domains. These PM domains, registered on
behalf of the clock controller driver, are configured with
GENPD_FLAG_PM_CLK. In most of the Renesas drivers used by RZ SoCs, the
clocks are enabled/disabled using runtime PM APIs. The power domains may
also have power_on/power_off support implemented. After the device PM
domain is powered off any CPU accesses to these domains leads to system
aborts.
During probe, devices are attached to the PM domain controlling their
clocks and power. Similarly, during removal, devices are detached from the
PM domain.
The detachment call stack is as follows:
device_driver_detach() ->
device_release_driver_internal() ->
__device_release_driver() ->
device_remove() ->
platform_remove() ->
dev_pm_domain_detach()
During driver unbind, after the device is detached from its PM domain,
the device_unbind_cleanup() function is called, which subsequently
invokes devres_release_all(). This function handles devres resource
cleanup.
If runtime PM is enabled in driver probe via devm_pm_runtime_enable(),
the cleanup process triggers the action or reset function for disabling
runtime PM. This function is pm_runtime_disable_action(), which leads
to the following call stack of interest when called:
pm_runtime_disable_action() ->
pm_runtime_dont_use_autosuspend() ->
__pm_runtime_use_autosuspend() ->
update_autosuspend() ->
rpm_idle()
The rpm_idle() function attempts to resume the device at runtime.
However, at the point it is called, the device is no longer part of a PM
domain (which manages clocks and power states). If the driver implements
its own runtime PM APIs for specific functionalities - such as the
rzg2l_adc driver - while also relying on the power domain subsystem for
power management, rpm_idle() will invoke the driver's runtime PM API.
However, since the device is no longer part of a PM domain at this point,
the PM domain's runtime PM APIs will not be called. This leads to system
aborts on Renesas SoCs.
Another identified case is when a subsystem performs various cleanups
using device_unbind_cleanup(), calling driver-specific APIs in the
process. A known example is the thermal subsystem, which may call driver-
specific APIs to disable the thermal device. The relevant call stack in
this case is:
device_driver_detach() ->
device_release_driver_internal() ->
device_unbind_cleanup() ->
devres_release_all() ->
devm_thermal_of_zone_release() ->
thermal_zone_device_disable() ->
thermal_zone_device_set_mode() ->
struct thermal_zone_device_ops::change_mode()
At the moment the driver-specific change_mode() API is called, the
device is no longer part of its PM domain. Accessing its registers
without proper power management leads to system aborts.
Drop the call to dev_pm_domain_detach() from the platform bus remove
function and rely on the newly introduced call in device_unbind_cleanup().
This ensures the same effect, but the call now occurs after all
driver-specific devres resources have been freed.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://patch.msgid.link/20250703112708.1621607-4-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Claudiu Beznea
|
f99508074e |
PM: domains: Detach on device_unbind_cleanup()
The dev_pm_domain_attach() function is typically used in bus code
alongside dev_pm_domain_detach(), often following patterns like:
static int bus_probe(struct device *_dev)
{
struct bus_driver *drv = to_bus_driver(dev->driver);
struct bus_device *dev = to_bus_device(_dev);
int ret;
// ...
ret = dev_pm_domain_attach(_dev, true);
if (ret)
return ret;
if (drv->probe)
ret = drv->probe(dev);
// ...
}
static void bus_remove(struct device *_dev)
{
struct bus_driver *drv = to_bus_driver(dev->driver);
struct bus_device *dev = to_bus_device(_dev);
if (drv->remove)
drv->remove(dev);
dev_pm_domain_detach(_dev);
}
When the driver's probe function uses devres-managed resources that
depend on the power domain state, those resources are released later
during device_unbind_cleanup().
Releasing devres-managed resources that depend on the power domain state
after detaching the device from its PM domain can cause failures.
For example, if the driver uses devm_pm_runtime_enable() in its probe
function, and the device's clocks are managed by the PM domain, then
during removal the runtime PM is disabled in device_unbind_cleanup()
after the clocks have been removed from the PM domain. It may happen
that the devm_pm_runtime_enable() action causes the device to be runtime-
resumed. If the driver specific runtime PM APIs access registers directly,
this will lead to accessing device registers without clocks being enabled.
Similar issues may occur with other devres actions that access device
registers.
Add detach_power_off member to struct dev_pm_info, to be used
later in device_unbind_cleanup() as the power_off argument for
dev_pm_domain_detach(). This is a preparatory step toward removing
dev_pm_domain_detach() calls from bus remove functions. Since the current
PM domain detach functions (genpd_dev_pm_detach() and acpi_dev_pm_detach())
already set dev->pm_domain = NULL, there should be no issues with bus
drivers that still call dev_pm_domain_detach() in their remove functions.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://patch.msgid.link/20250703112708.1621607-3-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Claudiu Beznea
|
d42c7c6fd6 |
PM: domains: Add flags to specify power on attach/detach
Calling dev_pm_domain_attach()/dev_pm_domain_detach() in bus driver probe/remove functions can affect system behavior when the drivers attached to the bus use devres-managed resources. Since devres actions may need to access device registers, calling dev_pm_domain_detach() too early, i.e., before these actions complete, can cause failures on some systems. One such example is Renesas RZ/G3S SoC-based platforms. If the device clocks are managed via PM domains, invoking dev_pm_domain_detach() in the bus driver's remove function removes the device's clocks from the PM domain, preventing any subsequent pm_runtime_resume*() calls from enabling those clocks. The second argument of dev_pm_domain_attach() specifies whether the PM domain should be powered on during attachment. Likewise, the second argument of dev_pm_domain_detach() indicates whether the domain should be powered off during detachment. Upcoming changes address the issue described above (initially for the platform bus only) by deferring the call to dev_pm_domain_detach() until after devres_release_all() in device_unbind_cleanup(). The detach_power_off field in struct dev_pm_info stores the detach power off info from the second argument of dev_pm_domain_attach(). Because there are cases where the device's PM domain power-on/off behavior must be conditional (e.g., in i2c_device_probe()), the patch introduces PD_FLAG_ATTACH_POWER_ON and PD_FLAG_DETACH_POWER_OFF flags to be passed to dev_pm_domain_attach(). Finally, dev_pm_domain_attach() and its users are updated to use the newly introduced PD_FLAG_ATTACH_POWER_ON and PD_FLAG_DETACH_POWER_OFF macros. This change is preparatory. Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com> # I2C Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/20250703112708.1621607-2-claudiu.beznea.uj@bp.renesas.com [ rjw: Changelog adjustments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Al Viro
|
9f711c9321
|
regmap: get rid of redundant debugfs_file_{get,put}()
pointless in ->read()/->write() of file_operations used only via debugfs_create_file() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Link: https://patch.msgid.link/20250702211602.GC3406663@ZenIV Signed-off-by: Mark Brown <broonie@kernel.org> |
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Rafael J. Wysocki
|
ffda4ca460 |
PM: sleep: Add strict_midlayer flag to struct dev_pm_info
Add a new flag, called strict_midlayer, to struct dev_pm_info, along with helper functions for updating and reading its value, to allow middle layer code that provides proper callbacks for device suspend- resume during system-wide PM transitions to let pm_runtime_force_suspend() and and pm_runtime_force_resume() know that they should only invoke runtime PM callbacks coming from the device's driver. Namely, if this flag is set, pm_runtime_force_suspend() and and pm_runtime_force_resume() will invoke runtime PM callbacks provided by the device's driver directly with the assumption that they have been called via a middle layer callback for device suspend or resume, respectively. For instance, acpi_general_pm_domain provides specific callback functions for system suspend, acpi_subsys_suspend(), acpi_subsys_suspend_late() and acpi_subsys_suspend_noirq(), and it does not expect its runtime suspend callback function, acpi_subsys_runtime_suspend(), to be invoked at any point during system suspend. In particular, it does not expect that function to be called from within any of the system suspend callback functions mentioned above which would happen if a device driver collaborating with acpi_general_pm_domain used pm_runtime_force_suspend() as its callback function for any system suspend phase later than "prepare". The new flag allows this expectation of acpi_general_pm_domain to be formally expressed, which is going to be done subsequently. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/24017035.6Emhk5qWAg@rjwysocki.net |
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Rafael J. Wysocki
|
2b2dcf0811 |
PM: runtime: Introduce __rpm_get_driver_callback()
Add a special function for computing the address of the runtime PM callback given by an offset relative to the start of the device driver's struct dev_pm_ops and use it to obtain the driver callback in __rpm_get_callback(). Also put the shared part of the callback address computation into a separate helper function to avoid code duplication and explicit pointer type casts. The new __rpm_get_driver_callback() will be used subsequently for implementing callback lookup in pm_runtime_force_suspend/resume(). No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/2054356.usQuhbGJ8B@rjwysocki.net |
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Rafael J. Wysocki
|
ab5ce09709 |
PM: Check power.needs_force_resume in pm_runtime_force_suspend()
Add a power.needs_force_resume check to pm_runtime_force_suspend() so it need not rely on the runtime PM status of the device when deciding whether or not to return early. With the new check in place, pm_runtime_force_suspend() will also skip devices with the runtime PM status equal to RPM_ACTIVE if they have power.needs_force_resume set, so it won't need to change the RPM status of the device to RPM_SUSPENDED in addition to setting power.needs_force_resume in the case when pm_runtime_need_not_resume() return false. That allows the runtime PM status update to be removed from pm_runtime_force_resume(), so the runtime PM status remains unchanged between the pm_runtime_force_suspend() and pm_runtime_force_resume() calls. This change potentially unbreaks drivers that call pm_runtime_force_suspend() from their ->remove() callbacks because currently, if the device being unbound from its driver has a parent with enabled runtime PM and/or (possibly) device links respecting runtime PM to suppliers, and it is RPM_ACTIVE when the remove takes place, pm_runtime_force_suspend() will not drop the parent's child count and the suppliers' runtime PM usage counters after force-suspending the device unless pm_runtime_need_not_resume() returns 'true' for it. Moreover, because pm_runtime_force_suspend() changes the device's runtime PM status to RPM_SUSPENDED, in the above case pm_runtime_reinit() will not cause those counters to drop, so they will remain nonzero forever effectively preventing the devices in question from runtime-suspending going forward. This change is also needed for pm_runtime_force_suspend() to work with PCI PM and ACPI PM after subsequent changes. Namely, say DPM_FLAG_SMART_SUSPEND is set for a PCI device and its driver uses pm_runtime_force_suspend() as its ->suspend() callback. If pm_runtime_force_suspend() changed the runtime PM status of the device to RPM_SUSPENDED, pci_pm_suspend_noirq() would skip the device due to the dev_pm_skip_suspend() check. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/1855933.VLH7GnMWUR@rjwysocki.net |
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Rafael J. Wysocki
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89d9cec3b1 |
PM: runtime: Clear power.needs_force_resume in pm_runtime_reinit()
Clear power.needs_force_resume in pm_runtime_reinit() in case it has been set by pm_runtime_force_suspend() invoked from a driver remove callback. Suggested-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/9495163.CDJkKcVGEf@rjwysocki.net |
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Rafael J. Wysocki
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e21bd84c2f |
PM: Make pm_runtime_force_resume() work with DPM_FLAG_SMART_SUSPEND
Curently, drivers using pm_runtime_force_suspend/resume() cannot set DPM_FLAG_SMART_SUSPEND because the devices with that flag set may need to be resumed during system-wide resume regardless of whether or not they have power.needs_force_resume set. That can happen due to a dependency resolved at the beginning of a system-wide resume transition (for instance, a bus type or PM domain has decided to resume a subordinate device with DPM_FLAG_SMART_SUSPEND and its parent and suppliers also need to be resumed). To overcome this limitation, modify pm_runtime_force_resume() to check the device's power.smart_suspend flag (which is set for devices with DPM_FLAG_SMART_SUSPEND set that meet some additional requirements) and the device's runtime PM status in addition to power.needs_force_resume. Also change it to clear power.smart_suspend to ensure that it will not handle the same device twice during one transition. The underlying observation is that there are two cases in which the device needs to be resumed by pm_runtime_force_resume(). One of them is when the device has power.needs_force_resume set, which means that pm_runtime_force_suspend() has suspended it and decided that it should be resumed during the subsequent system resume. The other one is when power.smart_suspend is set and the device's runtume PM status is RPM_ACTIVE. Update kerneldoc comments in accordance with the code changes. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/3662906.iIbC2pHGDl@rjwysocki.net |
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Rafael J. Wysocki
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c021c1b38f |
PM: Move two sleep-related functions under CONFIG_PM_SLEEP
Since pm_runtime_force_resume() and pm_runtime_need_not_resume() are only needed for handling system-wide PM transitions, there is no reason to compile them in if CONFIG_PM_SLEEP is unset. Accordingly, move them under CONFIG_PM_SLEEP and make the static inline stub for pm_runtime_force_resume() return an error to indicate that it should not be used outside CONFIG_PM_SLEEP. Putting pm_runtime_force_resume() also allows subsequent changes to be more straightforward because this function is going to access a device PM flag that is only defined when CONFIG_PM_SLEEP is set. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/3384523.aeNJFYEL58@rjwysocki.net |
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Rafael J. Wysocki
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200046d827 |
PM: Use true/false as power.needs_force_resume values
Since power.needs_force_resume is a bool field, use true/false as its values instead of 1/0, respectively. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/2254988.irdbgypaU6@rjwysocki.net |
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Rafael J. Wysocki
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06799631d5 |
PM: sleep: Make async suspend handle suppliers like parents
Avoid starting "async" suspend processing upfront for devices that have consumers and start "async" suspend processing for a device's suppliers right after suspending the device itself. Suggested-by: Saravana Kannan <saravanak@google.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Link: https://patch.msgid.link/3384525.44csPzL39Z@rjwysocki.net |
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Rafael J. Wysocki
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ed18738fff |
PM: sleep: Make async resume handle consumers like children
Avoid starting "async" resume processing upfront for devices that have suppliers and start "async" resume processing for a device's consumers right after resuming the device itself. Suggested-by: Saravana Kannan <saravanak@google.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Link: https://patch.msgid.link/3378088.aeNJFYEL58@rjwysocki.net |
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Zhongqiu Han
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5e8be76a7c |
PM: sleep: Drop superfluous might_sleep() calls
Drop superfluous might_sleep() calls from dpm_resume(), dpm_complete(), and dpm_prepare(). These functions already invoke primitives that implicitly check for sleep in atomic context: - dpm_resume() and dpm_complete() invoke mutex_lock(), which internally triggers might_sleep(). - dpm_prepare() calls wait_for_device_probe(), which internally uses flush_work(), and thus might_sleep(). These annotations are unnecessary and can be dropped to reduce clutter. Signed-off-by: Zhongqiu Han <quic_zhonhan@quicinc.com> Link: https://patch.msgid.link/20250617084650.341262-1-quic_zhonhan@quicinc.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Abdun Nihaal
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c871c199ac
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regmap: fix potential memory leak of regmap_bus
When __regmap_init() is called from __regmap_init_i2c() and
__regmap_init_spi() (and their devm versions), the bus argument
obtained from regmap_get_i2c_bus() and regmap_get_spi_bus(), may be
allocated using kmemdup() to support quirks. In those cases, the
bus->free_on_exit field is set to true.
However, inside __regmap_init(), buf is not freed on any error path.
This could lead to a memory leak of regmap_bus when __regmap_init()
fails. Fix that by freeing bus on error path when free_on_exit is set.
Fixes:
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Mario Limonciello
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12ffc3b151 |
PM: Restrict swap use to later in the suspend sequence
Currently swap is restricted before drivers have had a chance to do their prepare() PM callbacks. Restricting swap this early means that if a driver needs to evict some content from memory into sawp in it's prepare callback, it won't be able to. On AMD dGPUs this can lead to failed suspends under memory pressure situations as all VRAM must be evicted to system memory or swap. Move the swap restriction to right after all devices have had a chance to do the prepare() callback. If there is any problem with the sequence, restore swap in the appropriate dpm resume callbacks or error handling paths. Closes: https://github.com/ROCm/ROCK-Kernel-Driver/issues/174 Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/2362 Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Tested-by: Nat Wittstock <nat@fardog.io> Tested-by: Lucian Langa <lucilanga@7pot.org> Link: https://patch.msgid.link/20250613214413.4127087-1-superm1@kernel.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |