diff options
| author | Kan Liang <kan.liang@linux.intel.com> | 2020-07-03 15:49:09 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-07-08 12:38:51 +0300 |
| commit | c301b1d80ed5b806834fe0f739f028f65fb4fb16 (patch) | |
| tree | 5a03db4be9ad56692522d734ae2d348b223bc8e0 /arch/x86/events/perf_event.h | |
| parent | 9f354a726cb1d4eb00a0784a27eaa0a3283cff71 (diff) | |
| download | linux-c301b1d80ed5b806834fe0f739f028f65fb4fb16.tar.xz | |
perf/x86/intel/lbr: Add a function pointer for LBR read
The method to read Architectural LBRs is different from previous
model-specific LBR. Perf has to implement a different function.
A function pointer for LBR read is introduced. Perf should initialize
the corresponding function at boot time, and avoid checking lbr_format
at run time.
The current 64-bit LBR read function is set as default.
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/1593780569-62993-4-git-send-email-kan.liang@linux.intel.com
Diffstat (limited to 'arch/x86/events/perf_event.h')
| -rw-r--r-- | arch/x86/events/perf_event.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h index 5c1ad4360715..312d27f269e6 100644 --- a/arch/x86/events/perf_event.h +++ b/arch/x86/events/perf_event.h @@ -694,6 +694,7 @@ struct x86_pmu { bool lbr_pt_coexist; /* (LBR|BTS) may coexist with PT */ void (*lbr_reset)(void); + void (*lbr_read)(struct cpu_hw_events *cpuc); /* * Intel PT/LBR/BTS are exclusive @@ -1085,6 +1086,10 @@ void intel_pmu_lbr_disable_all(void); void intel_pmu_lbr_read(void); +void intel_pmu_lbr_read_32(struct cpu_hw_events *cpuc); + +void intel_pmu_lbr_read_64(struct cpu_hw_events *cpuc); + void intel_pmu_lbr_init_core(void); void intel_pmu_lbr_init_nhm(void); |