Re: [PATCH 1/5] ftrace: Support full glob matching

Steven Rostedt
2016-10-19T14:36:59Z

On Wed, 19 Oct 2016 13:53:36 +0900
Masami Hiramatsu <mhiramat@kernel.org> wrote:

> 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
> ----

Hi Masami,

Is this any different than your last patch, as I already pulled it into
my queue. I haven't been able to test it much, as I found that 4.9-rc1
is failing my tests, and I can't add new code to linux-next till 4.9 is
stable.

-- Steve