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Message-Id: <20230710122138.1450930-5-james.clark@arm.com>
Date: Mon, 10 Jul 2023 13:21:37 +0100
From: James Clark <james.clark@....com>
To: linux-perf-users@...r.kernel.org, irogers@...gle.com
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>, Will Deacon <will@...nel.org>,
Kan Liang <kan.liang@...ux.intel.com>,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 4/4] perf: 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.
Signed-off-by: James Clark <james.clark@....com>
---
include/linux/perf_event.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index d5628a7b5eaa..3f4d941fd6c5 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -288,7 +288,7 @@ struct perf_event_pmu_context;
#define PERF_PMU_CAP_EXTENDED_REGS 0x0008
#define PERF_PMU_CAP_EXCLUSIVE 0x0010
#define PERF_PMU_CAP_ITRACE 0x0020
-#define PERF_PMU_CAP_HETEROGENEOUS_CPUS 0x0040
+/* Unused 0x0040 */
#define PERF_PMU_CAP_NO_EXCLUDE 0x0080
#define PERF_PMU_CAP_AUX_OUTPUT 0x0100
#define PERF_PMU_CAP_EXTENDED_HW_TYPE 0x0200
--
2.34.1
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