mirror of
https://git.proxmox.com/git/mirror_ubuntu-kernels.git
synced 2026-01-07 03:49:41 +00:00
1f0d69a9fc
Impact: new unlikely/likely profiler
Andrew Morton recently suggested having an in-kernel way to profile
likely and unlikely macros. This patch achieves that goal.
When configured, every(*) likely and unlikely macro gets a counter attached
to it. When the condition is hit, the hit and misses of that condition
are recorded. These numbers can later be retrieved by:
/debugfs/tracing/profile_likely - All likely markers
/debugfs/tracing/profile_unlikely - All unlikely markers.
# cat /debug/tracing/profile_unlikely | head
correct incorrect % Function File Line
------- --------- - -------- ---- ----
2167 0 0 do_arch_prctl process_64.c 832
0 0 0 do_arch_prctl process_64.c 804
2670 0 0 IS_ERR err.h 34
71230 5693 7 __switch_to process_64.c 673
76919 0 0 __switch_to process_64.c 639
43184 33743 43 __switch_to process_64.c 624
12740 64181 83 __switch_to process_64.c 594
12740 64174 83 __switch_to process_64.c 590
# cat /debug/tracing/profile_unlikely | \
awk '{ if ($3 > 25) print $0; }' |head -20
44963 35259 43 __switch_to process_64.c 624
12762 67454 84 __switch_to process_64.c 594
12762 67447 84 __switch_to process_64.c 590
1478 595 28 syscall_get_error syscall.h 51
0 2821 100 syscall_trace_leave ptrace.c 1567
0 1 100 native_smp_prepare_cpus smpboot.c 1237
86338 265881 75 calc_delta_fair sched_fair.c 408
210410 108540 34 calc_delta_mine sched.c 1267
0 54550 100 sched_info_queued sched_stats.h 222
51899 66435 56 pick_next_task_fair sched_fair.c 1422
6 10 62 yield_task_fair sched_fair.c 982
7325 2692 26 rt_policy sched.c 144
0 1270 100 pre_schedule_rt sched_rt.c 1261
1268 48073 97 pick_next_task_rt sched_rt.c 884
0 45181 100 sched_info_dequeued sched_stats.h 177
0 15 100 sched_move_task sched.c 8700
0 15 100 sched_move_task sched.c 8690
53167 33217 38 schedule sched.c 4457
0 80208 100 sched_info_switch sched_stats.h 270
30585 49631 61 context_switch sched.c 2619
# cat /debug/tracing/profile_likely | awk '{ if ($3 > 25) print $0; }'
39900 36577 47 pick_next_task sched.c 4397
20824 15233 42 switch_mm mmu_context_64.h 18
0 7 100 __cancel_work_timer workqueue.c 560
617 66484 99 clocksource_adjust timekeeping.c 456
0 346340 100 audit_syscall_exit auditsc.c 1570
38 347350 99 audit_get_context auditsc.c 732
0 345244 100 audit_syscall_entry auditsc.c 1541
38 1017 96 audit_free auditsc.c 1446
0 1090 100 audit_alloc auditsc.c 862
2618 1090 29 audit_alloc auditsc.c 858
0 6 100 move_masked_irq migration.c 9
1 198 99 probe_sched_wakeup trace_sched_switch.c 58
2 2 50 probe_wakeup trace_sched_wakeup.c 227
0 2 100 probe_wakeup_sched_switch trace_sched_wakeup.c 144
4514 2090 31 __grab_cache_page filemap.c 2149
12882 228786 94 mapping_unevictable pagemap.h 50
4 11 73 __flush_cpu_slab slub.c 1466
627757 330451 34 slab_free slub.c 1731
2959 61245 95 dentry_lru_del_init dcache.c 153
946 1217 56 load_elf_binary binfmt_elf.c 904
102 82 44 disk_put_part genhd.h 206
1 1 50 dst_gc_task dst.c 82
0 19 100 tcp_mss_split_point tcp_output.c 1126
As you can see by the above, there's a bit of work to do in rethinking
the use of some unlikelys and likelys. Note: the unlikely case had 71 hits
that were more than 25%.
Note: After submitting my first version of this patch, Andrew Morton
showed me a version written by Daniel Walker, where I picked up
the following ideas from:
1) Using __builtin_constant_p to avoid profiling fixed values.
2) Using __FILE__ instead of instruction pointers.
3) Using the preprocessor to stop all profiling of likely
annotations from vsyscall_64.c.
Thanks to Andrew Morton, Arjan van de Ven, Theodore Tso and Ingo Molnar
for their feed back on this patch.
(*) Not ever unlikely is recorded, those that are used by vsyscalls
(a few of them) had to have profiling disabled.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Theodore Tso <tytso@mit.edu>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
425 lines
13 KiB
C
425 lines
13 KiB
C
#ifndef LOAD_OFFSET
|
|
#define LOAD_OFFSET 0
|
|
#endif
|
|
|
|
#ifndef VMLINUX_SYMBOL
|
|
#define VMLINUX_SYMBOL(_sym_) _sym_
|
|
#endif
|
|
|
|
/* Align . to a 8 byte boundary equals to maximum function alignment. */
|
|
#define ALIGN_FUNCTION() . = ALIGN(8)
|
|
|
|
/* The actual configuration determine if the init/exit sections
|
|
* are handled as text/data or they can be discarded (which
|
|
* often happens at runtime)
|
|
*/
|
|
#ifdef CONFIG_HOTPLUG
|
|
#define DEV_KEEP(sec) *(.dev##sec)
|
|
#define DEV_DISCARD(sec)
|
|
#else
|
|
#define DEV_KEEP(sec)
|
|
#define DEV_DISCARD(sec) *(.dev##sec)
|
|
#endif
|
|
|
|
#ifdef CONFIG_HOTPLUG_CPU
|
|
#define CPU_KEEP(sec) *(.cpu##sec)
|
|
#define CPU_DISCARD(sec)
|
|
#else
|
|
#define CPU_KEEP(sec)
|
|
#define CPU_DISCARD(sec) *(.cpu##sec)
|
|
#endif
|
|
|
|
#if defined(CONFIG_MEMORY_HOTPLUG)
|
|
#define MEM_KEEP(sec) *(.mem##sec)
|
|
#define MEM_DISCARD(sec)
|
|
#else
|
|
#define MEM_KEEP(sec)
|
|
#define MEM_DISCARD(sec) *(.mem##sec)
|
|
#endif
|
|
|
|
#ifdef CONFIG_FTRACE_MCOUNT_RECORD
|
|
#define MCOUNT_REC() VMLINUX_SYMBOL(__start_mcount_loc) = .; \
|
|
*(__mcount_loc) \
|
|
VMLINUX_SYMBOL(__stop_mcount_loc) = .;
|
|
#else
|
|
#define MCOUNT_REC()
|
|
#endif
|
|
|
|
#ifdef CONFIG_TRACE_UNLIKELY_PROFILE
|
|
#define LIKELY_PROFILE() VMLINUX_SYMBOL(__start_likely_profile) = .; \
|
|
*(_ftrace_likely) \
|
|
VMLINUX_SYMBOL(__stop_likely_profile) = .; \
|
|
VMLINUX_SYMBOL(__start_unlikely_profile) = .; \
|
|
*(_ftrace_unlikely) \
|
|
VMLINUX_SYMBOL(__stop_unlikely_profile) = .;
|
|
#else
|
|
#define LIKELY_PROFILE()
|
|
#endif
|
|
|
|
/* .data section */
|
|
#define DATA_DATA \
|
|
*(.data) \
|
|
*(.data.init.refok) \
|
|
*(.ref.data) \
|
|
DEV_KEEP(init.data) \
|
|
DEV_KEEP(exit.data) \
|
|
CPU_KEEP(init.data) \
|
|
CPU_KEEP(exit.data) \
|
|
MEM_KEEP(init.data) \
|
|
MEM_KEEP(exit.data) \
|
|
. = ALIGN(8); \
|
|
VMLINUX_SYMBOL(__start___markers) = .; \
|
|
*(__markers) \
|
|
VMLINUX_SYMBOL(__stop___markers) = .; \
|
|
VMLINUX_SYMBOL(__start___tracepoints) = .; \
|
|
*(__tracepoints) \
|
|
VMLINUX_SYMBOL(__stop___tracepoints) = .; \
|
|
LIKELY_PROFILE()
|
|
|
|
#define RO_DATA(align) \
|
|
. = ALIGN((align)); \
|
|
.rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start_rodata) = .; \
|
|
*(.rodata) *(.rodata.*) \
|
|
*(__vermagic) /* Kernel version magic */ \
|
|
*(__markers_strings) /* Markers: strings */ \
|
|
*(__tracepoints_strings)/* Tracepoints: strings */ \
|
|
} \
|
|
\
|
|
.rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \
|
|
*(.rodata1) \
|
|
} \
|
|
\
|
|
BUG_TABLE \
|
|
\
|
|
/* PCI quirks */ \
|
|
.pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \
|
|
*(.pci_fixup_early) \
|
|
VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \
|
|
VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \
|
|
*(.pci_fixup_header) \
|
|
VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \
|
|
VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \
|
|
*(.pci_fixup_final) \
|
|
VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \
|
|
VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \
|
|
*(.pci_fixup_enable) \
|
|
VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \
|
|
VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \
|
|
*(.pci_fixup_resume) \
|
|
VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \
|
|
VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \
|
|
*(.pci_fixup_resume_early) \
|
|
VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \
|
|
VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \
|
|
*(.pci_fixup_suspend) \
|
|
VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \
|
|
} \
|
|
\
|
|
/* Built-in firmware blobs */ \
|
|
.builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start_builtin_fw) = .; \
|
|
*(.builtin_fw) \
|
|
VMLINUX_SYMBOL(__end_builtin_fw) = .; \
|
|
} \
|
|
\
|
|
/* RapidIO route ops */ \
|
|
.rio_route : AT(ADDR(.rio_route) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start_rio_route_ops) = .; \
|
|
*(.rio_route_ops) \
|
|
VMLINUX_SYMBOL(__end_rio_route_ops) = .; \
|
|
} \
|
|
\
|
|
TRACEDATA \
|
|
\
|
|
/* Kernel symbol table: Normal symbols */ \
|
|
__ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___ksymtab) = .; \
|
|
*(__ksymtab) \
|
|
VMLINUX_SYMBOL(__stop___ksymtab) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-only symbols */ \
|
|
__ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \
|
|
*(__ksymtab_gpl) \
|
|
VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: Normal unused symbols */ \
|
|
__ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \
|
|
*(__ksymtab_unused) \
|
|
VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-only unused symbols */ \
|
|
__ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \
|
|
*(__ksymtab_unused_gpl) \
|
|
VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-future-only symbols */ \
|
|
__ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \
|
|
*(__ksymtab_gpl_future) \
|
|
VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: Normal symbols */ \
|
|
__kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___kcrctab) = .; \
|
|
*(__kcrctab) \
|
|
VMLINUX_SYMBOL(__stop___kcrctab) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-only symbols */ \
|
|
__kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \
|
|
*(__kcrctab_gpl) \
|
|
VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: Normal unused symbols */ \
|
|
__kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \
|
|
*(__kcrctab_unused) \
|
|
VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-only unused symbols */ \
|
|
__kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \
|
|
*(__kcrctab_unused_gpl) \
|
|
VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-future-only symbols */ \
|
|
__kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \
|
|
*(__kcrctab_gpl_future) \
|
|
VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: strings */ \
|
|
__ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
|
|
*(__ksymtab_strings) \
|
|
} \
|
|
\
|
|
/* __*init sections */ \
|
|
__init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
|
|
*(.ref.rodata) \
|
|
MCOUNT_REC() \
|
|
DEV_KEEP(init.rodata) \
|
|
DEV_KEEP(exit.rodata) \
|
|
CPU_KEEP(init.rodata) \
|
|
CPU_KEEP(exit.rodata) \
|
|
MEM_KEEP(init.rodata) \
|
|
MEM_KEEP(exit.rodata) \
|
|
} \
|
|
\
|
|
/* Built-in module parameters. */ \
|
|
__param : AT(ADDR(__param) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___param) = .; \
|
|
*(__param) \
|
|
VMLINUX_SYMBOL(__stop___param) = .; \
|
|
. = ALIGN((align)); \
|
|
VMLINUX_SYMBOL(__end_rodata) = .; \
|
|
} \
|
|
. = ALIGN((align));
|
|
|
|
/* RODATA provided for backward compatibility.
|
|
* All archs are supposed to use RO_DATA() */
|
|
#define RODATA RO_DATA(4096)
|
|
|
|
#define SECURITY_INIT \
|
|
.security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__security_initcall_start) = .; \
|
|
*(.security_initcall.init) \
|
|
VMLINUX_SYMBOL(__security_initcall_end) = .; \
|
|
}
|
|
|
|
/* .text section. Map to function alignment to avoid address changes
|
|
* during second ld run in second ld pass when generating System.map */
|
|
#define TEXT_TEXT \
|
|
ALIGN_FUNCTION(); \
|
|
*(.text.hot) \
|
|
*(.text) \
|
|
*(.ref.text) \
|
|
*(.text.init.refok) \
|
|
*(.exit.text.refok) \
|
|
DEV_KEEP(init.text) \
|
|
DEV_KEEP(exit.text) \
|
|
CPU_KEEP(init.text) \
|
|
CPU_KEEP(exit.text) \
|
|
MEM_KEEP(init.text) \
|
|
MEM_KEEP(exit.text) \
|
|
*(.text.unlikely)
|
|
|
|
|
|
/* sched.text is aling to function alignment to secure we have same
|
|
* address even at second ld pass when generating System.map */
|
|
#define SCHED_TEXT \
|
|
ALIGN_FUNCTION(); \
|
|
VMLINUX_SYMBOL(__sched_text_start) = .; \
|
|
*(.sched.text) \
|
|
VMLINUX_SYMBOL(__sched_text_end) = .;
|
|
|
|
/* spinlock.text is aling to function alignment to secure we have same
|
|
* address even at second ld pass when generating System.map */
|
|
#define LOCK_TEXT \
|
|
ALIGN_FUNCTION(); \
|
|
VMLINUX_SYMBOL(__lock_text_start) = .; \
|
|
*(.spinlock.text) \
|
|
VMLINUX_SYMBOL(__lock_text_end) = .;
|
|
|
|
#define KPROBES_TEXT \
|
|
ALIGN_FUNCTION(); \
|
|
VMLINUX_SYMBOL(__kprobes_text_start) = .; \
|
|
*(.kprobes.text) \
|
|
VMLINUX_SYMBOL(__kprobes_text_end) = .;
|
|
|
|
/* Section used for early init (in .S files) */
|
|
#define HEAD_TEXT *(.head.text)
|
|
|
|
/* init and exit section handling */
|
|
#define INIT_DATA \
|
|
*(.init.data) \
|
|
DEV_DISCARD(init.data) \
|
|
DEV_DISCARD(init.rodata) \
|
|
CPU_DISCARD(init.data) \
|
|
CPU_DISCARD(init.rodata) \
|
|
MEM_DISCARD(init.data) \
|
|
MEM_DISCARD(init.rodata) \
|
|
/* implement dynamic printk debug */ \
|
|
VMLINUX_SYMBOL(__start___verbose_strings) = .; \
|
|
*(__verbose_strings) \
|
|
VMLINUX_SYMBOL(__stop___verbose_strings) = .; \
|
|
. = ALIGN(8); \
|
|
VMLINUX_SYMBOL(__start___verbose) = .; \
|
|
*(__verbose) \
|
|
VMLINUX_SYMBOL(__stop___verbose) = .;
|
|
|
|
#define INIT_TEXT \
|
|
*(.init.text) \
|
|
DEV_DISCARD(init.text) \
|
|
CPU_DISCARD(init.text) \
|
|
MEM_DISCARD(init.text)
|
|
|
|
#define EXIT_DATA \
|
|
*(.exit.data) \
|
|
DEV_DISCARD(exit.data) \
|
|
DEV_DISCARD(exit.rodata) \
|
|
CPU_DISCARD(exit.data) \
|
|
CPU_DISCARD(exit.rodata) \
|
|
MEM_DISCARD(exit.data) \
|
|
MEM_DISCARD(exit.rodata)
|
|
|
|
#define EXIT_TEXT \
|
|
*(.exit.text) \
|
|
DEV_DISCARD(exit.text) \
|
|
CPU_DISCARD(exit.text) \
|
|
MEM_DISCARD(exit.text)
|
|
|
|
/* DWARF debug sections.
|
|
Symbols in the DWARF debugging sections are relative to
|
|
the beginning of the section so we begin them at 0. */
|
|
#define DWARF_DEBUG \
|
|
/* DWARF 1 */ \
|
|
.debug 0 : { *(.debug) } \
|
|
.line 0 : { *(.line) } \
|
|
/* GNU DWARF 1 extensions */ \
|
|
.debug_srcinfo 0 : { *(.debug_srcinfo) } \
|
|
.debug_sfnames 0 : { *(.debug_sfnames) } \
|
|
/* DWARF 1.1 and DWARF 2 */ \
|
|
.debug_aranges 0 : { *(.debug_aranges) } \
|
|
.debug_pubnames 0 : { *(.debug_pubnames) } \
|
|
/* DWARF 2 */ \
|
|
.debug_info 0 : { *(.debug_info \
|
|
.gnu.linkonce.wi.*) } \
|
|
.debug_abbrev 0 : { *(.debug_abbrev) } \
|
|
.debug_line 0 : { *(.debug_line) } \
|
|
.debug_frame 0 : { *(.debug_frame) } \
|
|
.debug_str 0 : { *(.debug_str) } \
|
|
.debug_loc 0 : { *(.debug_loc) } \
|
|
.debug_macinfo 0 : { *(.debug_macinfo) } \
|
|
/* SGI/MIPS DWARF 2 extensions */ \
|
|
.debug_weaknames 0 : { *(.debug_weaknames) } \
|
|
.debug_funcnames 0 : { *(.debug_funcnames) } \
|
|
.debug_typenames 0 : { *(.debug_typenames) } \
|
|
.debug_varnames 0 : { *(.debug_varnames) } \
|
|
|
|
/* Stabs debugging sections. */
|
|
#define STABS_DEBUG \
|
|
.stab 0 : { *(.stab) } \
|
|
.stabstr 0 : { *(.stabstr) } \
|
|
.stab.excl 0 : { *(.stab.excl) } \
|
|
.stab.exclstr 0 : { *(.stab.exclstr) } \
|
|
.stab.index 0 : { *(.stab.index) } \
|
|
.stab.indexstr 0 : { *(.stab.indexstr) } \
|
|
.comment 0 : { *(.comment) }
|
|
|
|
#ifdef CONFIG_GENERIC_BUG
|
|
#define BUG_TABLE \
|
|
. = ALIGN(8); \
|
|
__bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start___bug_table) = .; \
|
|
*(__bug_table) \
|
|
VMLINUX_SYMBOL(__stop___bug_table) = .; \
|
|
}
|
|
#else
|
|
#define BUG_TABLE
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM_TRACE
|
|
#define TRACEDATA \
|
|
. = ALIGN(4); \
|
|
.tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__tracedata_start) = .; \
|
|
*(.tracedata) \
|
|
VMLINUX_SYMBOL(__tracedata_end) = .; \
|
|
}
|
|
#else
|
|
#define TRACEDATA
|
|
#endif
|
|
|
|
#define NOTES \
|
|
.notes : AT(ADDR(.notes) - LOAD_OFFSET) { \
|
|
VMLINUX_SYMBOL(__start_notes) = .; \
|
|
*(.note.*) \
|
|
VMLINUX_SYMBOL(__stop_notes) = .; \
|
|
}
|
|
|
|
#define INITCALLS \
|
|
*(.initcallearly.init) \
|
|
VMLINUX_SYMBOL(__early_initcall_end) = .; \
|
|
*(.initcall0.init) \
|
|
*(.initcall0s.init) \
|
|
*(.initcall1.init) \
|
|
*(.initcall1s.init) \
|
|
*(.initcall2.init) \
|
|
*(.initcall2s.init) \
|
|
*(.initcall3.init) \
|
|
*(.initcall3s.init) \
|
|
*(.initcall4.init) \
|
|
*(.initcall4s.init) \
|
|
*(.initcall5.init) \
|
|
*(.initcall5s.init) \
|
|
*(.initcallrootfs.init) \
|
|
*(.initcall6.init) \
|
|
*(.initcall6s.init) \
|
|
*(.initcall7.init) \
|
|
*(.initcall7s.init)
|
|
|
|
#define PERCPU(align) \
|
|
. = ALIGN(align); \
|
|
VMLINUX_SYMBOL(__per_cpu_start) = .; \
|
|
.data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { \
|
|
*(.data.percpu.page_aligned) \
|
|
*(.data.percpu) \
|
|
*(.data.percpu.shared_aligned) \
|
|
} \
|
|
VMLINUX_SYMBOL(__per_cpu_end) = .;
|