linux-kernel - Re: [PATCH 0/6 v3] perf: Have perf become tracefs aware

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Date:	Mon, 9 Feb 2015 10:48:53 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	linux-kernel@...r.kernel.org
Cc:	Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jiri Olsa <jolsa@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Namhyung Kim <namhyung@...nel.org>
Subject: Re: [PATCH 0/6 v3] perf: Have perf become tracefs aware

If you already applied v2, here's the patch that changes v3.

-- Steve

>From 55989e0e3e9c15d755a9cf0d8c6a899a0de7d1eb Mon Sep 17 00:00:00 2001
From: "Steven Rostedt (Red Hat)" <rostedt@...dmis.org>
Date: Mon, 9 Feb 2015 10:42:59 -0500
Subject: [PATCH] perf: Fix directory name in error message for tracefs

If tracefs is configured, but not mounted, the error message should
ask if it is mounted at /sys/kernel/tracing and not at
/sys/kernel/debug.

Link: http://lkml.kernel.org/r/20150208141246.GA13586@danjae
Reported-by: Namhyung Kim <namhyung@...nel.org>
Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
---
 tools/perf/tests/open-syscall-all-cpus.c | 2 +-
 tools/perf/tests/open-syscall.c          | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/tests/open-syscall-all-cpus.c b/tools/perf/tests/open-syscall-all-cpus.c
index 21969e99ea46..3ec885c48f8f 100644
--- a/tools/perf/tests/open-syscall-all-cpus.c
+++ b/tools/perf/tests/open-syscall-all-cpus.c
@@ -30,7 +30,7 @@ int test__open_syscall_event_on_all_cpus(void)
 	evsel = perf_evsel__newtp("syscalls", "sys_enter_open");
 	if (evsel == NULL) {
 		if (tracefs_configured())
-			pr_debug("is tracefs mounted on /sys/kernel/debug?\n");
+			pr_debug("is tracefs mounted on /sys/kernel/tracing?\n");
 		else if (debugfs_configured())
 			pr_debug("is debugfs mounted on /sys/kernel/debug?\n");
 		else
diff --git a/tools/perf/tests/open-syscall.c b/tools/perf/tests/open-syscall.c
index 4250e40234d2..07aa319bf334 100644
--- a/tools/perf/tests/open-syscall.c
+++ b/tools/perf/tests/open-syscall.c
@@ -19,7 +19,7 @@ int test__open_syscall_event(void)
 	evsel = perf_evsel__newtp("syscalls", "sys_enter_open");
 	if (evsel == NULL) {
 		if (tracefs_configured())
-			pr_debug("is tracefs mounted on /sys/kernel/debug?\n");
+			pr_debug("is tracefs mounted on /sys/kernel/tracing?\n");
 		else if (debugfs_configured())
 			pr_debug("is debugfs mounted on /sys/kernel/debug?\n");
 		else
-- 
2.1.4

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