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authorDmitry Safonov <0x7f454c46@gmail.com>2015-09-29 19:46:16 +0300
committerSteven Rostedt <rostedt@goodmis.org>2015-10-20 20:04:14 -0400
commitb86d9371be2fcb6ebf47e6c15d23d0ec1586664a (patch)
treeb1f22fffd406652f8e967c6d74f31036329a3b9f
parent0b507e1ed1b7364def464cfb348ea7c9e87e6e18 (diff)
Documentation: ftrace: Module globbing usage
Link: http://lkml.kernel.org/r/1443545176-3215-5-git-send-email-0x7f454c46@gmail.com Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
-rw-r--r--Documentation/trace/ftrace.txt17
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/trace/ftrace.txt b/Documentation/trace/ftrace.txt
index ef621d34ba5b..db18362c14f3 100644
--- a/Documentation/trace/ftrace.txt
+++ b/Documentation/trace/ftrace.txt
@@ -2437,6 +2437,23 @@ The following commands are supported:
echo '!writeback*:mod:ext3' >> set_ftrace_filter
+ Mod command supports module globbing. Disable tracing for all
+ functions except a specific module:
+
+ echo '!*:mod:!ext3' >> set_ftrace_filter
+
+ Disable tracing for all modules, but still trace kernel:
+
+ echo '!*:mod:*' >> set_ftrace_filter
+
+ Enable filter only for kernel:
+
+ echo '*write*:mod:!*' >> set_ftrace_filter
+
+ Enable filter for module globbing:
+
+ echo '*write*:mod:*snd*' >> set_ftrace_filter
+
- traceon/traceoff
These commands turn tracing on and off when the specified
functions are hit. The parameter determines how many times the

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