[tip:perf/core] perf trace beauty clone: Handle CLONE_PIDFD

[tip-bot for Arnaldo Carvalho de Melo]

Commit-ID:  ee364dcdcd008530883efc0e690fc8e85622f9b5
Gitweb:     https://git.kernel.org/tip/ee364dcdcd008530883efc0e690fc8e85622f9b5
Author:     Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Tue, 21 May 2019 16:51:08 -0300
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Tue, 28 May 2019 18:37:43 -0300

perf trace beauty clone: Handle CLONE_PIDFD

In addition to the older flags. This will allow something like this to
be implemented in 'perf trace"

  perf trace -e clone/PIDFD in flags/

I.e. ask for strace like tracing, system wide, looking for 'clone'
syscalls that have the CLONE_PIDFD bit set in the 'flags' arg.

For now we'll just see PIDFD if it is set in the 'flags' arg.

Cc: Christian Brauner <christian@xxxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Brendan Gregg <brendan.d.gregg@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Luis ClÃudio GonÃalves <lclaudio@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Link: https://lkml.kernel.org/n/tip-drq9h7s8gcv8b87064fp6lb0@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/trace/beauty/clone.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/trace/beauty/clone.c b/tools/perf/trace/beauty/clone.c
index 6eb9a6636171..1a8d3be2030e 100644
--- a/tools/perf/trace/beauty/clone.c
+++ b/tools/perf/trace/beauty/clone.c
@@ -25,6 +25,7 @@ static size_t clone__scnprintf_flags(unsigned long flags, char *bf, size_t size,
 	P_FLAG(FS);
 	P_FLAG(FILES);
 	P_FLAG(SIGHAND);
+	P_FLAG(PIDFD);
 	P_FLAG(PTRACE);
 	P_FLAG(VFORK);
 	P_FLAG(PARENT);