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    Subject[tip:perf/core] perf symbols: Fill in pgoff in mmap synthesized events
    Commit-ID:  4af8b35db6634dd1e0d616de689582b6c93550af
    Gitweb: http://git.kernel.org/tip/4af8b35db6634dd1e0d616de689582b6c93550af
    Author: Anton Blanchard <anton@samba.org>
    AuthorDate: Sat, 3 Apr 2010 22:53:31 +1100
    Committer: Arnaldo Carvalho de Melo <acme@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@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>
    ---
    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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