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Message-Id: <20220907091924.439193-3-anshuman.khandual@arm.com>
Date: Wed, 7 Sep 2022 14:49:22 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, peterz@...radead.org
Cc: Anshuman Khandual <anshuman.khandual@....com>,
James Clark <james.clark@....com>,
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>, x86@...nel.org
Subject: [PATCH V3 2/4] perf/core: Assert PERF_EVENT_FLAG_ARCH does not overlap with generic flags
This just ensures that PERF_EVENT_FLAG_ARCH does not overlap with generic
hardware event flags.
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: linux-perf-users@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Reviewed-by: James Clark <james.clark@....com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
---
include/linux/perf_event.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 3f51fbf4a595..10e23a0f9db0 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -140,6 +140,8 @@ struct hw_perf_event_extra {
#define PERF_EVENT_FLAG_ARCH 0x000fffff
#define PERF_EVENT_FLAG_USER_READ_CNT 0x80000000
+static_assert((PERF_EVENT_FLAG_USER_READ_CNT & PERF_EVENT_FLAG_ARCH) == 0);
+
/**
* struct hw_perf_event - performance event hardware details:
*/
--
2.25.1
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