On Sat, 5 May 2018 11:38:03 +0900 Masami Hiramatsu <mhira...@kernel.org> wrote:
> On Fri, 4 May 2018 12:06:42 -0400 > Steven Rostedt <rost...@goodmis.org> wrote: > > > On Sat, 5 May 2018 00:48:28 +0900 > > Masami Hiramatsu <mhira...@kernel.org> wrote: > > > > > So the syntax will be > > > > > > p[:EVENT] SYM[(CAST)|+OFFS] [FETCHARG] > > > > > > And here is an example; > > > > > > p:myevent vfs_read(void *file, char *buf, size_t count, void *pos) $arg1 > > > $arg2 > > > > If we do this, why bother with $arg1 $arg2? > > User may want to trace only some of them. :) Yes, and this is why I like my solution of the NULL parameter, and you don't need to show anything after what you want. p:myevent vfs_read(void *file, NULL, size_t count) would only trace file and count, and ignore buf and pos. -- Steve
