AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-28 11:18:45 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

perf/x86/intel: Move BTS index to 47

Browse Source 
The bit 48 in the PERF_GLOBAL_STATUS is used to indicate the overflow
status of the PERF_METRICS counters.

Move the BTS index to the bit 47.

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/20200723171117.9918-5-kan.liang@linux.intel.com
This commit is contained in:
Kan Liang 2020-07-23 10:11:07 -07:00 committed by Peter Zijlstra
parent 6f7225099d
commit d39fcc3289
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/include/asm/perf_event.h
View File

@ -238,11 +238,11 @@ struct x86_pmu_capability {
/*
* We model BTS tracing as another fixed-mode PMC.
*
* We choose a value in the middle of the fixed event range, since lower
* We choose the value 47 for the fixed index of BTS, since lower
* values are used by actual fixed events and higher values are used
* to indicate other overflow conditions in the PERF_GLOBAL_STATUS msr.
*/
#define INTEL_PMC_IDX_FIXED_BTS (INTEL_PMC_IDX_FIXED + 16)
#define INTEL_PMC_IDX_FIXED_BTS (INTEL_PMC_IDX_FIXED + 15)
#define GLOBAL_STATUS_COND_CHG BIT_ULL(63)
#define GLOBAL_STATUS_BUFFER_OVF_BIT 62