[tip:perf/core] perf tools: Add union u64_swap type for swapping u64 data

[tip-bot for Jiri Olsa <jolsa@redhat.com>]

Commit-ID:  6a11f92ef449bfb87f93e7cc14cb2a717afc7aa3
Gitweb:     http://git.kernel.org/tip/6a11f92ef449bfb87f93e7cc14cb2a717afc7aa3
Author:     Jiri Olsa <jolsa@redhat.com>
AuthorDate: Wed, 16 May 2012 08:59:04 +0200
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Tue, 22 May 2012 12:50:25 -0300

perf tools: Add union u64_swap type for swapping u64 data

The following union:
  union {
        u64 val64;
        u32 val32[2];
  } u;

is used on more than one place in perf code and will be used more in
upcomming patches.

Adding union u64_swap to have it defined globaly so we dont need to
redefine it all the time.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Tested-by: David Ahern <dsahern@gmail.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1337151548-2396-4-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/evsel.c |   10 ++--------
 tools/perf/util/types.h |    5 +++++
 2 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 9abd8ac..57e4ce5 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -462,10 +462,7 @@ int perf_event__parse_sample(const union perf_event *event, u64 type,
 	 * used for cross-endian analysis. See git commit 65014ab3
 	 * for why this goofiness is needed.
 	 */
-	union {
-		u64 val64;
-		u32 val32[2];
-	} u;
+	union u64_swap u;
 
 	memset(data, 0, sizeof(*data));
 	data->cpu = data->pid = data->tid = -1;
@@ -608,10 +605,7 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type,
 	 * used for cross-endian analysis. See git commit 65014ab3
 	 * for why this goofiness is needed.
 	 */
-	union {
-		u64 val64;
-		u32 val32[2];
-	} u;
+	union u64_swap u;
 
 	array = event->sample.array;
 
diff --git a/tools/perf/util/types.h b/tools/perf/util/types.h
index 5f3689a..c51fa6b 100644
--- a/tools/perf/util/types.h
+++ b/tools/perf/util/types.h
@@ -16,4 +16,9 @@ typedef signed short	   s16;
 typedef unsigned char	   u8;
 typedef signed char	   s8;
 
+union u64_swap {
+	u64 val64;
+	u32 val32[2];
+};
+
 #endif /* __PERF_TYPES_H */