perf trace: Beautify fifth argument of mmap() as fd

The fifth argument of mmap syscall is fd and it often contains -1 as a
value for anon mappings.  Without this patch it doesn't show the file
name as well as it shows -1 as 4294967295.

Signed-off-by: Namhyung Kim <[email protected]>
Acked-by: David Ahern <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index c3008b1c369cc49e6c6b02d1071e0bcbde9b6346..aeb6296a76bd550f9853cad3b395f2f4b5c27b42 100644 (file)
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -951,7 +951,8 @@ static struct syscall_fmt {
        { .name     = "mmap",       .hexret = true,
          .arg_scnprintf = { [0] = SCA_HEX,       /* addr */
                             [2] = SCA_MMAP_PROT, /* prot */
-                            [3] = SCA_MMAP_FLAGS, /* flags */ }, },
+                            [3] = SCA_MMAP_FLAGS, /* flags */
+                            [4] = SCA_FD,        /* fd */ }, },
        { .name     = "mprotect",   .errmsg = true,
          .arg_scnprintf = { [0] = SCA_HEX, /* start */
                             [2] = SCA_MMAP_PROT, /* prot */ }, },