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From:   James Clark <james.clark@arm.com>
To:     linux-perf-users@vger.kernel.org, irogers@google.com
Cc:     James Clark <james.clark@arm.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
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        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
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        Namhyung Kim <namhyung@kernel.org>,
        Adrian Hunter <adrian.hunter@intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org,
        "H. Peter Anvin" <hpa@zytor.com>, Will Deacon <will@kernel.org>,
        Kan Liang <kan.liang@linux.intel.com>,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/4] perf: Remove unused PERF_PMU_CAP_HETEROGENEOUS_CPUS capability
Date:   Mon, 10 Jul 2023 13:21:37 +0100
Message-Id: <20230710122138.1450930-5-james.clark@arm.com>
In-Reply-To: <20230710122138.1450930-1-james.clark@arm.com>
References: <20230710122138.1450930-1-james.clark@arm.com>
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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@arm.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