linux-kernel - [tip:perf/core] perf trace: Do not beautify the 'pid' parameter as a simple integer

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Date:	Wed, 27 Apr 2016 08:36:45 -0700
From:	tip-bot for Arnaldo Carvalho de Melo <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, acme@...hat.com, namhyung@...nel.org,
	mingo@...nel.org, dsahern@...il.com, adrian.hunter@...el.com,
	milian.wolff@...b.com, hpa@...or.com, wangnan0@...wei.com,
	tglx@...utronix.de, jolsa@...nel.org
Subject: [tip:perf/core] perf trace: Do not beautify the 'pid' parameter as
 a simple integer

Commit-ID:  ccd9b2a7f82b069b8e8ac892fd9c1c22e7b11eba
Gitweb:     http://git.kernel.org/tip/ccd9b2a7f82b069b8e8ac892fd9c1c22e7b11eba
Author:     Arnaldo Carvalho de Melo <acme@...hat.com>
AuthorDate: Tue, 26 Apr 2016 11:40:17 -0300
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Tue, 26 Apr 2016 13:14:59 -0300

perf trace: Do not beautify the 'pid' parameter as a simple integer

Leave it alone so that it ends up assigned to SCA_PID via its type,
'pid_t', that will look up the pid on the machine thread rb_tree and
possibly find its COMM.

Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Milian Wolff <milian.wolff@...b.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/n/tip-r7dujgmhtxxfajuunpt1bkuo@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/builtin-trace.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 903deda..48b00f0 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1043,8 +1043,7 @@ static struct syscall_fmt {
 			     [1] = SCA_FILENAME, /* filename */
 			     [2] = SCA_OPEN_FLAGS, /* flags */ }, },
 	{ .name	    = "perf_event_open", .errmsg = true,
-	  .arg_scnprintf = { [1] = SCA_INT, /* pid */
-			     [2] = SCA_INT, /* cpu */
+	  .arg_scnprintf = { [2] = SCA_INT, /* cpu */
 			     [3] = SCA_FD,  /* group_fd */
 			     [4] = SCA_PERF_FLAGS,  /* flags */ }, },
 	{ .name	    = "pipe2",	    .errmsg = true,