Kan Liang 80a5ce116f perf/x86/intel: Check perf metrics feature for each CPU ... It might be possible that different CPUs have different CPU metrics on a platform. In this case, writing the GLOBAL_CTRL_EN_PERF_METRICS bit to the GLOBAL_CTRL register of a CPU, which doesn't support the TopDown perf metrics feature, causes MSR access error. Current TopDown perf metrics feature is enumerated using the boot CPU's PERF_CAPABILITIES MSR. The MSR only indicates the boot CPU supports this feature. Check the PERF_CAPABILITIES MSR for each CPU. If any CPU doesn't support the perf metrics feature, disable the feature globally. Fixes: 59a854e2f3 ("perf/x86/intel: Support TopDown metrics on Ice Lake") Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20201001211711.25708-1-kan.liang@linux.intel.com		2020-10-03 16:30:56 +02:00
..
amd	perf/amd/uncore: Inform the user how many counters each uncore PMU has	2020-09-24 15:55:50 +02:00
intel	perf/x86/intel: Check perf metrics feature for each CPU	2020-10-03 16:30:56 +02:00
zhaoxin	x86/perf: Fix a typo	2020-07-22 10:22:08 +02:00
core.c	perf/x86/amd: Fix sampling Large Increment per Cycle events	2020-09-10 11:19:35 +02:00
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Makefile	perf/x86/rapl: Fix RAPL config variable bug	2020-06-02 11:52:56 +02:00
msr.c	perf/x86/msr: Add Jasper Lake support	2020-09-29 09:57:02 +02:00
perf_event.h	perf/x86/intel: Support TopDown metrics on Ice Lake	2020-08-18 16:34:37 +02:00
probe.c	perf/x86/rapl: Make perf_probe_msr() more robust and flexible	2020-05-28 07:58:55 +02:00
probe.h	perf/x86: Add MSR probe interface	2019-06-24 19:28:31 +02:00
rapl.c	perf/x86/rapl: Add AMD Fam19h RAPL support	2020-09-10 11:19:36 +02:00