diff options
| author | James Clark <james.clark@arm.com> | 2023-07-24 15:44:58 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-07-26 12:28:47 +0200 |
| commit | 80391d8c387d406e2ec79776ec834666ab9611b0 (patch) | |
| tree | 03d77a366e457260b2aed3319f36d233a4000c6b /drivers/perf/arm_pmu.c | |
| parent | perf/x86: Remove unused PERF_PMU_CAP_HETEROGENEOUS_CPUS capability (diff) | |
| download | linux-80391d8c387d406e2ec79776ec834666ab9611b0.tar.xz linux-80391d8c387d406e2ec79776ec834666ab9611b0.zip | |
arm_pmu: Remove unused PERF_PMU_CAP_HETEROGENEOUS_CPUS capability
Since commit bd2756811766 ("perf: Rewrite core context handling") the
relationship between perf_event_context and PMUs has changed so that
the error scenario that PERF_PMU_CAP_HETEROGENEOUS_CPUS originally
silenced no longer exists.
Remove the capability and associated comment to avoid confusion that it
actually influences any perf core behavior. This change should be a
no-op.
Signed-off-by: James Clark <james.clark@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20230724134500.970496-4-james.clark@arm.com
Diffstat (limited to 'drivers/perf/arm_pmu.c')
| -rw-r--r-- | drivers/perf/arm_pmu.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c index 2e79201daa4a..d712a19e47ac 100644 --- a/drivers/perf/arm_pmu.c +++ b/drivers/perf/arm_pmu.c @@ -877,15 +877,12 @@ struct arm_pmu *armpmu_alloc(void) .attr_groups = pmu->attr_groups, /* * This is a CPU PMU potentially in a heterogeneous - * configuration (e.g. big.LITTLE). This is not an uncore PMU, - * and we have taken ctx sharing into account (e.g. with our - * pmu::filter callback and pmu::event_init group validation). - * + * configuration (e.g. big.LITTLE) so * PERF_PMU_CAP_EXTENDED_HW_TYPE is required to open * PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE events on a * specific PMU. */ - .capabilities = PERF_PMU_CAP_HETEROGENEOUS_CPUS | PERF_PMU_CAP_EXTENDED_REGS | + .capabilities = PERF_PMU_CAP_EXTENDED_REGS | PERF_PMU_CAP_EXTENDED_HW_TYPE, }; |