diff options
| author | Like Xu <like.xu@linux.intel.com> | 2022-11-25 07:05:50 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-12-27 14:52:07 +0300 |
| commit | 03c4c7f88709fac0e20b6a48357c73d6fc50e544 (patch) | |
| tree | 83281d30af0bb485e0651bf92b4644b63bbe22b1 /arch/x86/events/intel | |
| parent | 1b929c02afd37871d5afb9d498426f83432e71c2 (diff) | |
| download | linux-03c4c7f88709fac0e20b6a48357c73d6fc50e544.tar.xz | |
perf/x86/lbr: Simplify the exposure check for the LBR_INFO registers
The x86_pmu.lbr_info is 0 unless explicitly initialized, so there's
no point checking x86_pmu.intel_cap.lbr_format.
Signed-off-by: Like Xu <like.xu@linux.intel.com>
Signed-off-by: Yang Weijiang <weijiang.yang@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Link: https://lkml.kernel.org/r/20221125040604.5051-2-weijiang.yang@intel.com
Diffstat (limited to 'arch/x86/events/intel')
| -rw-r--r-- | arch/x86/events/intel/lbr.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/x86/events/intel/lbr.c b/arch/x86/events/intel/lbr.c index 1f21f576ca77..c3b0d15a9841 100644 --- a/arch/x86/events/intel/lbr.c +++ b/arch/x86/events/intel/lbr.c @@ -1606,12 +1606,10 @@ clear_arch_lbr: */ void x86_perf_get_lbr(struct x86_pmu_lbr *lbr) { - int lbr_fmt = x86_pmu.intel_cap.lbr_format; - lbr->nr = x86_pmu.lbr_nr; lbr->from = x86_pmu.lbr_from; lbr->to = x86_pmu.lbr_to; - lbr->info = (lbr_fmt == LBR_FORMAT_INFO) ? x86_pmu.lbr_info : 0; + lbr->info = x86_pmu.lbr_info; } EXPORT_SYMBOL_GPL(x86_perf_get_lbr); |