linux-kernel - [PATCH 2/9] perf: Remove pointless union that wraps the hw breakpoint fields

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Date:	Sun,  6 Dec 2009 08:34:51 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	"K. Prasad" <prasad@...ux.vnet.ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: [PATCH 2/9] perf: Remove pointless union that wraps the hw breakpoint fields

It stands to anonymize a structure, but structures can already
anonymize by themselves.

Reported-by: Peter Zijlstra <peterz@...radead.org>
Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: "K. Prasad" <prasad@...ux.vnet.ibm.com>
---
 include/linux/perf_event.h |   14 ++++++--------
 1 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index a61e4de..53230e9 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -215,14 +215,12 @@ struct perf_event_attr {
 		__u32		wakeup_watermark; /* bytes before wakeup   */
 	};
 
-	union {
-		struct { /* Hardware breakpoint info */
-			__u64		bp_addr;
-			__u32		bp_type;
-			__u32		bp_len;
-			__u64		__bp_reserved_1;
-			__u64		__bp_reserved_2;
-		};
+	struct { /* Hardware breakpoint info */
+		__u64		bp_addr;
+		__u32		bp_type;
+		__u32		bp_len;
+		__u64		__bp_reserved_1;
+		__u64		__bp_reserved_2;
 	};
 
 	__u32			__reserved_2;
-- 
1.6.2.3

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