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Message-Id: <20230724134500.970496-3-james.clark@arm.com>
Date: Mon, 24 Jul 2023 14:44:57 +0100
From: James Clark <james.clark@....com>
To: linux-perf-users@...r.kernel.org, irogers@...gle.com,
anshuman.khandual@....com, will@...nel.org
Cc: James Clark <james.clark@....com>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Adrian Hunter <adrian.hunter@...el.com>,
Thomas Gleixner <tglx@...utronix.de>,
Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
"H. Peter Anvin" <hpa@...or.com>,
Kan Liang <kan.liang@...ux.intel.com>,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v2 2/4] perf/x86: 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 to avoid confusion that it actually influences
any perf core behavior. This change should be a no-op.
Acked-by: Ian Rogers <irogers@...gle.com>
Signed-off-by: James Clark <james.clark@....com>
---
arch/x86/events/core.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
index 9d248703cbdd..2353aaf0b248 100644
--- a/arch/x86/events/core.c
+++ b/arch/x86/events/core.c
@@ -2168,7 +2168,6 @@ static int __init init_hw_perf_events(void)
hybrid_pmu->pmu = pmu;
hybrid_pmu->pmu.type = -1;
hybrid_pmu->pmu.attr_update = x86_pmu.attr_update;
- hybrid_pmu->pmu.capabilities |= PERF_PMU_CAP_HETEROGENEOUS_CPUS;
hybrid_pmu->pmu.capabilities |= PERF_PMU_CAP_EXTENDED_HW_TYPE;
err = perf_pmu_register(&hybrid_pmu->pmu, hybrid_pmu->name,
--
2.34.1
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