From: Dmitry Safonov <0x7f454c46@gmail.com> Date: Tue, 29 Sep 2015 16:46:16 +0000 (+0300) Subject: Documentation: ftrace: Module globbing usage X-Git-Tag: firefly_0821_release~176^2~700^2~39 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b86d9371be2fcb6ebf47e6c15d23d0ec1586664a;p=firefly-linux-kernel-4.4.55.git 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 --- 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