提交 7d359886 编写于 作者: P Peter Zijlstra

perf/x86/core: Set pebs_capable and PMU_FL_PEBS_ALL for the Baseline

The SDM explicitly states that PEBS Baseline implies Extended PEBS.
For cpu model forward compatibility (e.g. on ICX, SPR, ADL), it's
safe to stop doing FMS table thing such as setting pebs_capable and
PMU_FL_PEBS_ALL since it's already set in the intel_ds_init().

The Goldmont Plus is the only platform which supports extended PEBS
but doesn't have Baseline. Keep the status quo.
Reported-by: NLike Xu <likexu@tencent.com>
Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: NKan Liang <kan.liang@linux.intel.com>
Link: https://lkml.kernel.org/r/20220816114057.51307-1-likexu@tencent.com
上级 32ba156d
......@@ -6291,10 +6291,8 @@ __init int intel_pmu_init(void)
x86_pmu.pebs_aliases = NULL;
x86_pmu.pebs_prec_dist = true;
x86_pmu.pebs_block = true;
x86_pmu.pebs_capable = ~0ULL;
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
x86_pmu.flags |= PMU_FL_PEBS_ALL;
x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
x86_pmu.flags |= PMU_FL_MEM_LOADS_AUX;
......@@ -6337,10 +6335,8 @@ __init int intel_pmu_init(void)
x86_pmu.pebs_aliases = NULL;
x86_pmu.pebs_prec_dist = true;
x86_pmu.pebs_block = true;
x86_pmu.pebs_capable = ~0ULL;
x86_pmu.flags |= PMU_FL_HAS_RSP_1;
x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
x86_pmu.flags |= PMU_FL_PEBS_ALL;
x86_pmu.flags |= PMU_FL_INSTR_LATENCY;
x86_pmu.flags |= PMU_FL_MEM_LOADS_AUX;
x86_pmu.lbr_pt_coexist = true;
......
......@@ -2262,6 +2262,7 @@ void __init intel_ds_init(void)
PERF_SAMPLE_BRANCH_STACK |
PERF_SAMPLE_TIME;
x86_pmu.flags |= PMU_FL_PEBS_ALL;
x86_pmu.pebs_capable = ~0ULL;
pebs_qual = "-baseline";
x86_get_pmu(smp_processor_id())->capabilities |= PERF_PMU_CAP_EXTENDED_REGS;
} else {
......
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