Thomas Gleixner 7d84c1ebf9 x86/aperfmperf: Replace aperfmperf_get_khz() ... The frequency invariance infrastructure provides the APERF/MPERF samples already. Utilize them for the cpu frequency display in /proc/cpuinfo. The sample is considered valid for 20ms. So for idle or isolated NOHZ full CPUs the function returns 0, which is matching the previous behaviour. This gets rid of the mass IPIs and a delay of 20ms for stabilizing observed by Eric when reading /proc/cpuinfo. Reported-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Paul E. McKenney <paulmck@kernel.org> Link: https://lore.kernel.org/r/20220415161206.875029458@linutronix.de		2022-04-27 20:22:19 +02:00
..
mce	- More noinstr fixes	2022-03-25 12:34:53 -07:00
microcode	x86/microcode: Use the firmware_loader built-in API	2021-10-22 14:13:50 +02:00
mtrr	x86/mtrr: Replace deprecated CPU-hotplug functions.	2021-08-10 14:46:27 +02:00
resctrl	x86: Replace cpumask_weight() with cpumask_empty() where appropriate	2022-04-10 22:35:38 +02:00
sgx	x86/sgx: Free backing memory after faulting the enclave page	2022-03-11 10:31:06 -08:00
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
acrn.c	x86/acrn: Introduce acrn_cpuid_base() and hypervisor feature bits	2021-02-09 10:58:18 +01:00
amd.c	x86/cpu: Clear SME feature flag when not in use	2022-02-16 19:45:53 +01:00
aperfmperf.c	x86/aperfmperf: Replace aperfmperf_get_khz()	2022-04-27 20:22:19 +02:00
bugs.c	x86/speculation: Warn about eIBRS + LFENCE + Unprivileged eBPF + SMT	2022-03-05 09:30:47 +01:00
cacheinfo.c	sched: Add cluster scheduler level for x86	2021-10-15 11:25:16 +02:00
centaur.c	x86/cpu/centaur: Add Centaur family >=7 CPUs initialization support	2020-09-11 10:53:19 +02:00
common.c	Merge branch 'x86/cpu' into x86/core, to resolve conflicts	2022-03-15 12:52:51 +01:00
cpu.h	x86/cpu: Fix migration safety with X86_BUG_NULL_SEL	2021-10-21 20:49:16 +02:00
cpuid-deps.c	x86/fpu: Optimize out sigframe xfeatures when in init state	2021-11-03 22:42:35 +01:00
cyrix.c	x86: Fix various typos in comments	2021-03-18 15:31:53 +01:00
feat_ctl.c	x86/cpu/intel: Allow SGX virtualization without Launch Control support	2021-04-06 09:43:41 +02:00
hygon.c	x86/cpu: Fix migration safety with X86_BUG_NULL_SEL	2021-10-21 20:49:16 +02:00
hypervisor.c	x86/paravirt: Remove const mark from x86_hyper_xen_hvm variable	2019-07-17 08:09:59 +02:00
intel_epb.c	x86: intel_epb: Allow model specific normal EPB value	2022-01-04 16:37:23 +01:00
intel_pconfig.c
intel.c	Changes in this cycle were:	2021-06-28 13:30:02 -07:00
Makefile	x86/CPU: Add support for Vortex CPUs	2021-10-21 15:49:07 +02:00
match.c	x86/cpu: Add a steppings field to struct x86_cpu_id	2020-04-20 12:19:21 +02:00
mkcapflags.sh	x86/cpu: Print VMX flags in /proc/cpuinfo using VMX_FEATURES_*	2020-01-13 18:36:02 +01:00
mshyperv.c	hyperv-next for 5.18	2022-03-24 12:30:37 -07:00
perfctr-watchdog.c	x86/nmi_watchdog: Fix old-style NMI watchdog regression on old Intel CPUs	2021-06-10 10:04:40 +02:00
powerflags.c
proc.c	x86/cpu: Print VMX flags in /proc/cpuinfo using VMX_FEATURES_*	2020-01-13 18:36:02 +01:00
rdrand.c	x86/rdrand: Sanity-check RDRAND output	2019-10-01 19:55:32 +02:00
scattered.c	x86/cpu: X86_FEATURE_INTEL_PPIN finally has a CPUID bit	2022-02-01 16:15:19 +01:00
topology.c	x86: Fix various typos in comments	2021-03-18 15:31:53 +01:00
transmeta.c
tsx.c	x86/tsx: Clear CPUID bits when TSX always force aborts	2021-06-15 17:46:48 +02:00
umc.c
umwait.c	KVM: VMX: Stop context switching MSR_IA32_UMWAIT_CONTROL	2020-06-22 20:54:57 -04:00
vmware.c	Have vmware guests skip the refined TSC calibration when the TSC	2021-04-26 09:13:43 -07:00
vortex.c	x86/CPU: Add support for Vortex CPUs	2021-10-21 15:49:07 +02:00
zhaoxin.c	x86/cpu: Reinitialize IA32_FEAT_CTL MSR on BSP during wakeup	2020-06-15 14:18:37 +02:00