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perf symbols: Fill in pgoff in mmap synthesized events

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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 <[email protected]>
Cc: David Miller <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Paul Mackerras <[email protected]>
LKML-Reference: <20100403115331.GK5594@kryten>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Anton Blanchard authored and Arnaldo Carvalho de Melo committed 2010-04-03 10:20:31 -03:00
1 parent e206d556c5
commit 4af8b35db6
1 file changed
+9
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tools/perf/util/event.c
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@@ -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);