linux-kernel - [tip:perf/core] perf tools: Add anonymous huge page recognition

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Date:	Fri, 25 Jan 2013 03:34:07 -0800
From:	tip-bot for Joshua Zhu <zhu.wen-jie@...com>
To:	linux-tip-commits@...r.kernel.org
Cc:	acme@...hat.com, linux-kernel@...r.kernel.org, paulus@...ba.org,
	mingo@...hat.com, hpa@...or.com, mingo@...nel.org,
	andi@...stfloor.org, akihiro.nagai.hw@...achi.com,
	a.p.zijlstra@...llo.nl, zhu.wen-jie@...com, namhyung@...nel.org,
	jolsa@...hat.com, dsahern@...il.com, tglx@...utronix.de
Subject: [tip:perf/core] perf tools: Add anonymous huge page recognition

Commit-ID:  d0528b5d71faf612014dd7672e44225c915344b2
Gitweb:     http://git.kernel.org/tip/d0528b5d71faf612014dd7672e44225c915344b2
Author:     Joshua Zhu <zhu.wen-jie@...com>
AuthorDate: Sat, 5 Jan 2013 13:29:57 +0800
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Thu, 24 Jan 2013 16:40:19 -0300

perf tools: Add anonymous huge page recognition

Judging anonymous memory's vm_area_struct, perf_mmap_event's filename
will be set to "//anon" indicating this vma belongs to anonymous
memory.

Once hugepage is used, vma's vm_file points to hugetlbfs. In this way,
this vma will not be regarded as anonymous memory by is_anon_memory() in
perf user space utility.

Signed-off-by: Joshua Zhu <zhu.wen-jie@...com>
Cc: Akihiro Nagai <akihiro.nagai.hw@...achi.com>
Cc: Andi Kleen <andi@...stfloor.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Joshua Zhu <zhu.wen-jie@...com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1357363797-3550-1-git-send-email-zhu.wen-jie@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/map.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 0328d45..ff94425 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -19,7 +19,8 @@ const char *map_type__name[MAP__NR_TYPES] = {
 
 static inline int is_anon_memory(const char *filename)
 {
-	return strcmp(filename, "//anon") == 0;
+	return !strcmp(filename, "//anon") ||
+	       !strcmp(filename, "/anon_hugepage (deleted)");
 }
 
 static inline int is_no_dso_memory(const char *filename)
--
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