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Subject[tip:perf/urgent] perf trace: Beautify fifth argument of mmap() as fd
Commit-ID:  73faab3a421351c342b10b0177fec9eea1a1d809
Gitweb: http://git.kernel.org/tip/73faab3a421351c342b10b0177fec9eea1a1d809
Author: Namhyung Kim <namhyung.kim@lge.com>
AuthorDate: Tue, 12 Nov 2013 15:24:59 +0900
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Tue, 12 Nov 2013 13:00:23 -0300

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 <namhyung@kernel.org>
Acked-by: David Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1384237500-22991-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-trace.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index c3008b1..aeb6296 100644
--- 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 */ }, },

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