linux-kernel - [tip:perf/core] perf: Fix broken union in ' struct perf_event_mmap

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Date:	Tue, 23 Jul 2013 20:56:04 -0700
From:	tip-bot for Adrian Hunter <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	a.p.zijlstra@...llo.nl, adrian.hunter@...el.com, tglx@...utronix.de
Subject: [tip:perf/core] perf: Fix broken union in '
 struct perf_event_mmap_page'

Commit-ID:  860f085b74e9f0075de8140ed3a1e5b5e3e39aa8
Gitweb:     http://git.kernel.org/tip/860f085b74e9f0075de8140ed3a1e5b5e3e39aa8
Author:     Adrian Hunter <adrian.hunter@...el.com>
AuthorDate: Fri, 28 Jun 2013 16:22:17 +0300
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Tue, 23 Jul 2013 12:17:10 +0200

perf: Fix broken union in 'struct perf_event_mmap_page'

The capabilities bits must not be "union'ed" together.
Put them in a separate struct.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1372425741-1676-2-git-send-email-adrian.hunter@intel.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 include/uapi/linux/perf_event.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index 00d8274..0041aed 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -375,9 +375,11 @@ struct perf_event_mmap_page {
 	__u64	time_running;		/* time event on cpu */
 	union {
 		__u64	capabilities;
-		__u64	cap_usr_time  : 1,
-			cap_usr_rdpmc : 1,
-			cap_____res   : 62;
+		struct {
+			__u64	cap_usr_time		: 1,
+				cap_usr_rdpmc		: 1,
+				cap_____res		: 62;
+		};
 	};
 
 	/*
--
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