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Subject[PATCH 1/3] perf/core: Assert PERF_EVENT_FLAG_ARCH does not overlap with generic flags
Date
This just ensures that PERF_EVENT_FLAG_ARCH does not overlap with generic
hardware event flags.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: linux-perf-users@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
kernel/events/core.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 2621fd24ad26..29c58de6c888 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -13429,6 +13429,7 @@ void __init perf_event_init(void)
*/
BUILD_BUG_ON((offsetof(struct perf_event_mmap_page, data_head))
!= 1024);
+ BUILD_BUG_ON(PERF_EVENT_FLAG_USER_READ_CNT & PERF_EVENT_FLAG_ARCH);
}

ssize_t perf_event_sysfs_show(struct device *dev, struct device_attribute *attr,
--
2.25.1
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