linux-kernel - [PATCH 1/3] perf: Correct final kernel map guesses

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Message-Id: <1290658375-10342-1-git-send-email-imunsie@au1.ibm.com>
Date:	Thu, 25 Nov 2010 15:12:53 +1100
From:	"Ian Munsie" <imunsie@....ibm.com>
To:	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>
Cc:	tom.leiming@...il.com, Ian Munsie <imunsie@....ibm.com>
Subject: [PATCH 1/3] perf: Correct final kernel map guesses

From: Ian Munsie <imunsie@....ibm.com>

If a 32bit userspace perf is running on a 64bit kernel, the end of the
final map in the kernel would incorrectly be set to 2^32-1 rather than
2^64-1.

Signed-off-by: Ian Munsie <imunsie@....ibm.com>
---
 tools/perf/util/event.c  |    2 +-
 tools/perf/util/symbol.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index bc47446..4283417 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -392,7 +392,7 @@ static void event_set_kernel_mmap_len(struct map **maps, event_t *self)
 	 * a zero sized synthesized MMAP event for the kernel.
 	 */
 	if (maps[MAP__FUNCTION]->end == 0)
-		maps[MAP__FUNCTION]->end = ~0UL;
+		maps[MAP__FUNCTION]->end = ~0ULL;
 }
 
 static int event__process_kernel_mmap(event_t *self,
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 0500895..a348906 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -121,7 +121,7 @@ static void __map_groups__fixup_end(struct map_groups *self, enum map_type type)
 	 * We still haven't the actual symbols, so guess the
 	 * last map final address.
 	 */
-	curr->end = ~0UL;
+	curr->end = ~0ULL;
 }
 
 static void map_groups__fixup_end(struct map_groups *self)
-- 
1.7.2.3

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