Commit 4af8b35d authored Apr 03, 2010 by Anton Blanchard Committed by Arnaldo Carvalho de Melo Apr 03, 2010

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@samba.org>
Cc: David Miller <davem@davemloft.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <20100403115331.GK5594@kryten>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent e206d556

tools/perf/util/event.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -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);