[tip:perf/core] perf trace beauty fcntl: Beautify the 'arg' for DUPFD

[tip-bot for Arnaldo Carvalho de Melo]

Commit-ID:  befecc810c95994774439baeedc8a03fe8d51e8f
Gitweb:     http://git.kernel.org/tip/befecc810c95994774439baeedc8a03fe8d51e8f
Author:     Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Mon, 17 Jul 2017 16:04:20 -0300
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Tue, 18 Jul 2017 23:14:26 -0300

perf trace beauty fcntl: Beautify the 'arg' for DUPFD

Before:

 77059.513 ( 0.005 ms): bash/6649 fcntl(fd: 1</dev/pts/12>, cmd: DUPFD, arg: 10) = 10</dev/pts/12>

After:

 77059.513 ( 0.005 ms): bash/6649 fcntl(fd: 1</dev/pts/12>, cmd: DUPFD, arg: 10</dev/pts/12>) = 10</dev/pts/12>

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-0k8iszng0slcuw0rc6xq1x5l@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/trace/beauty/fcntl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/trace/beauty/fcntl.c b/tools/perf/trace/beauty/fcntl.c
index b6987c4..9e8900c 100644
--- a/tools/perf/trace/beauty/fcntl.c
+++ b/tools/perf/trace/beauty/fcntl.c
@@ -71,6 +71,9 @@ size_t syscall_arg__scnprintf_fcntl_arg(char *bf, size_t size, struct syscall_ar
 {
 	int cmd = syscall_arg__val(arg, 1);
 
+	if (cmd == F_DUPFD)
+		return syscall_arg__scnprintf_fd(bf, size, arg);
+
 	if (cmd == F_SETFD)
 		return fcntl__scnprintf_getfd(arg->val, bf, size);