From 60f1d5e3bac44b598f67d36062da96c095d2b700 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Wed, 5 Oct 2016 20:58:15 +0900 Subject: ftrace: Support full glob matching Use glob_match() to support flexible glob wildcards (*,?) and character classes ([) for ftrace. Since the full glob matching is slower than the current partial matching routines(*pat, pat*, *pat*), this leaves those routines and just add MATCH_GLOB for complex glob expression. e.g. ---- [root@localhost tracing]# echo 'sched*group' > set_ftrace_filter [root@localhost tracing]# cat set_ftrace_filter sched_free_group sched_change_group sched_create_group sched_online_group sched_destroy_group sched_offline_group [root@localhost tracing]# echo '[Ss]y[Ss]_*' > set_ftrace_filter [root@localhost tracing]# head set_ftrace_filter sys_arch_prctl sys_rt_sigreturn sys_ioperm SyS_iopl sys_modify_ldt SyS_mmap SyS_set_thread_area SyS_get_thread_area SyS_set_tid_address sys_fork ---- Link: http://lkml.kernel.org/r/147566869501.29136.6462645009894738056.stgit@devbox Acked-by: Namhyung Kim Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt --- Documentation/trace/ftrace.txt | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'Documentation/trace/ftrace.txt') diff --git a/Documentation/trace/ftrace.txt b/Documentation/trace/ftrace.txt index 185c39fea2a0..1bc66c1db0cb 100644 --- a/Documentation/trace/ftrace.txt +++ b/Documentation/trace/ftrace.txt @@ -2218,16 +2218,13 @@ hrtimer_interrupt sys_nanosleep -Perhaps this is not enough. The filters also allow simple wild -cards. Only the following are currently available +Perhaps this is not enough. The filters also allow glob(7) matching. * - will match functions that begin with * - will match functions that end with ** - will match functions that have in it - -These are the only wild cards which are supported. - - * will not work. + * - will match functions that begin with + and end with Note: It is better to use quotes to enclose the wild cards, otherwise the shell may expand the parameters into names -- cgit v1.2.3