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linux/arch/x86/kernel/cpu
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davidwang fe6daab1ee x86/centaur: Mark TSC invariant 
Centaur CPU has a constant frequency TSC and that TSC does not stop in
C-States. But because the corresponding TSC feature flags are not set for
that CPU, the TSC is treated as not constant frequency and assumed to stop
in C-States, which makes it an unreliable and unusable clock source.

Setting those flags tells the kernel that the TSC is usable, so it will
select it over HPET.  The effect of this is that reading time stamps (from
kernel or user space) will be faster and more efficent.

Signed-off-by: davidwang <davidwang@zhaoxin.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: qiyuanwang@zhaoxin.com
Cc: linux-pm@vger.kernel.org
Cc: brucechang@via-alliance.com
Cc: cooperyan@zhaoxin.com
Cc: benjaminpan@viatech.com
Link: https://lkml.kernel.org/r/1516616057-5158-1-git-send-email-davidwang@zhaoxin.com
2018-01-24 13:38:10 +01:00
..
mcheck Merge branch 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 13:33:39 -08:00
microcode x86/microcode/intel: Extend BDW late-loading with a revision check 2018-01-06 14:44:57 +01:00
mtrr License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
.gitignore
amd.c x86: Make X86_BUG_FXSAVE_LEAK detectable in CPUID on AMD 2017-12-17 13:55:02 +01:00
aperfmperf.c x86 / CPU: Always show current CPU frequency in /proc/cpuinfo 2017-11-15 19:46:50 +01:00
bugs.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
centaur.c x86/centaur: Mark TSC invariant 2018-01-24 13:38:10 +01:00
common.c Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-01-05 12:23:57 -08:00
cpu.h x86 / CPU: Always show current CPU frequency in /proc/cpuinfo 2017-11-15 19:46:50 +01:00
cpuid-deps.c x86/cpuid: Replace set/clear_bit32() 2017-11-02 14:56:43 +01:00
cyrix.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hypervisor.c x86/virt: Add enum for hypervisors to replace x86_hyper 2017-11-10 10:03:12 +01:00
intel_cacheinfo.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
intel_rdt_ctrlmondata.c x86/intel_rdt: Fix a silent failure when writing zero value schemata 2017-11-12 09:01:40 +01:00
intel_rdt_monitor.c x86/intel_rdt/cqm: Make integer rmid_limbo_count static 2017-10-05 13:20:32 +02:00
intel_rdt_rdtgroup.c x86/intel_rdt: Fix potential deadlock during resctrl mount 2017-10-21 17:12:22 +02:00
intel_rdt.c x86/intel_rdt: Initialize bitmask of shareable resource if CDP enabled 2017-10-21 17:12:21 +02:00
intel_rdt.h Merge branch 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 19:05:19 -08:00
intel.c kmemcheck: rip it out 2017-11-15 18:21:05 -08:00
Makefile Merge commit 'upstream-x86-entry' into WIP.x86/mm 2017-12-17 12:58:53 +01:00
match.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mkcapflags.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mshyperv.c x86/virt: Add enum for hypervisors to replace x86_hyper 2017-11-10 10:03:12 +01:00
perfctr-watchdog.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
powerflags.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
proc.c x86 / CPU: Always show current CPU frequency in /proc/cpuinfo 2017-11-15 19:46:50 +01:00
rdrand.c x86, asm: Use CC_SET()/CC_OUT() and static_cpu_has() in archrandom.h 2016-06-08 12:41:20 -07:00
scattered.c x86/cpu/AMD: Add the Secure Memory Encryption CPU feature 2017-07-18 11:37:59 +02:00
topology.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
transmeta.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
umc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vmware.c x86/virt: Add enum for hypervisors to replace x86_hyper 2017-11-10 10:03:12 +01:00