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| author | Masami Hiramatsu <mhiramat@kernel.org> | 2016-10-05 13:58:15 +0200 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2016-11-14 22:42:58 +0100 |
| commit | 60f1d5e3bac44b598f67d36062da96c095d2b700 (patch) | |
| tree | 87990c058f734d14b446e99772548971138e1192 /Documentation/trace/events.txt | |
| parent | ftrace: Add more checks for FTRACE_FL_DISABLED in processing ip records (diff) | |
| download | linux-60f1d5e3bac44b598f67d36062da96c095d2b700.tar.xz linux-60f1d5e3bac44b598f67d36062da96c095d2b700.zip | |
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 <namhyung@kernel.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'Documentation/trace/events.txt')
| -rw-r--r-- | Documentation/trace/events.txt | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/Documentation/trace/events.txt b/Documentation/trace/events.txt index 08d74d75150d..2cc08d4a326e 100644 --- a/Documentation/trace/events.txt +++ b/Documentation/trace/events.txt @@ -189,16 +189,13 @@ And for string fields they are: ==, !=, ~ -The glob (~) only accepts a wild card character (*) at the start and or -end of the string. For example: +The glob (~) accepts a wild card character (*,?) and character classes +([). For example: prev_comm ~ "*sh" prev_comm ~ "sh*" prev_comm ~ "*sh*" - -But does not allow for it to be within the string: - - prev_comm ~ "ba*sh" <-- is invalid + prev_comm ~ "ba*sh" 5.2 Setting filters ------------------- |