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From: tip-bot for Anton Blanchard on 3 Apr 2010 12:30
Commit-ID: 4af8b35db6634dd1e0d616de689582b6c93550af
Gitweb: http://git.kernel.org/tip/4af8b35db6634dd1e0d616de689582b6c93550af
Author: Anton Blanchard <anton(a)samba.org>
AuthorDate: Sat, 3 Apr 2010 22:53:31 +1100
Committer: Arnaldo Carvalho de Melo <acme(a)redhat.com>
CommitDate: Sat, 3 Apr 2010 10:20:31 -0300

perf symbols: Fill in pgoff in mmap synthesized events

When we synthesize mmap events we need to fill in the pgoff field.

I wasn't able to test this completely since I couldn't find an
executable region with a non 0 offset. We will see it when we start
doing data profiling.

Signed-off-by: Anton Blanchard <anton(a)samba.org>
Cc: David Miller <davem(a)davemloft.net>
Cc: Peter Zijlstra <a.p.zijlstra(a)chello.nl>
Cc: Paul Mackerras <paulus(a)samba.org>
LKML-Reference: <20100403115331.GK5594(a)kryten>
Signed-off-by: Arnaldo Carvalho de Melo <acme(a)redhat.com>
---
tools/perf/util/event.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 052eaec..571fb25 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -130,6 +130,7 @@ static int event__synthesize_mmap_events(pid_t pid, pid_t tgid,
continue;
pbf += n + 3;
if (*pbf == 'x') { /* vm_exec */
+ u64 vm_pgoff;
char *execname = strchr(bf, '/');

/* Catch VDSO */
@@ -139,6 +140,14 @@ static int event__synthesize_mmap_events(pid_t pid, pid_t tgid,
if (execname == NULL)
continue;

+ pbf += 3;
+ n = hex2u64(pbf, &vm_pgoff);
+ /* pgoff is in bytes, not pages */
+ if (n >= 0)
+ ev.mmap.pgoff = vm_pgoff << getpagesize();
+ else
+ ev.mmap.pgoff = 0;
+
size = strlen(execname);
execname[size - 1] = '\0'; /* Remove \n */
memcpy(ev.mmap.filename, execname, size);
--
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