On Tue, Jan 20, 2026 at 03:53:40PM -0500, Steven Rostedt wrote: > On Sat, 17 Jan 2026 20:18:13 -0500 > "Seokwoo Chung (Ryan)" <[email protected]> wrote: > > > Update fprobe event documentation to describe comma-separated symbol lists, > > exclusions, and explicit suffixes. > > Usually, the documentation updates comes *after* the changes. > > -- Steve > Thanks for the comment. As you noticed, I sent another patch since I forgot to put log. That said, please let me know if you want me to continue on this series. My apologies on the ordering. I noted after Masami mentioned but I misordered when sending. Thank you.
Best regards, Ryan Chung > > > > Signed-off-by: Seokwoo Chung (Ryan) <[email protected]> > > --- > > Documentation/trace/fprobetrace.rst | 17 ++++++++++++++--- > > 1 file changed, 14 insertions(+), 3 deletions(-) > > > > diff --git a/Documentation/trace/fprobetrace.rst > > b/Documentation/trace/fprobetrace.rst > > index b4c2ca3d02c1..bbcfd57f0005 100644 > > --- a/Documentation/trace/fprobetrace.rst > > +++ b/Documentation/trace/fprobetrace.rst > > @@ -25,14 +25,18 @@ Synopsis of fprobe-events > > ------------------------- > > :: > > > > - f[:[GRP1/][EVENT1]] SYM [FETCHARGS] : Probe on > > function entry > > - f[MAXACTIVE][:[GRP1/][EVENT1]] SYM%return [FETCHARGS] : Probe on > > function exit > > + f[:[GRP1/][EVENT1]] SYM[%return] [FETCHARGS] : Single > > function > > + f[:[GRP1/][EVENT1]] SYM[,[!]SYM[,...]][:entry|:exit] [FETCHARGS] > > :Multiple > > + function > > t[:[GRP2/][EVENT2]] TRACEPOINT [FETCHARGS] : Probe on > > tracepoint > > > > GRP1 : Group name for fprobe. If omitted, use "fprobes" for it. > > GRP2 : Group name for tprobe. If omitted, use "tracepoints" for > > it. > > EVENT1 : Event name for fprobe. If omitted, the event name is > > - "SYM__entry" or "SYM__exit". > > + - For a single literal symbol, the event name is > > + "SYM__entry" or "SYM__exit". > > + - For a *list or any wildcard*, an explicit [GRP1/][EVENT1] is > > + required; otherwise the parser rejects it. > > EVENT2 : Event name for tprobe. If omitted, the event name is > > the same as "TRACEPOINT", but if the "TRACEPOINT" starts > > with a digit character, "_TRACEPOINT" is used. > > @@ -40,6 +44,13 @@ Synopsis of fprobe-events > > can be probed simultaneously, or 0 for the default value > > as defined in Documentation/trace/fprobe.rst > > > > + SYM : Function name or comma-separated list of symbols. > > + - SYM prefixed with "!" are exclusions. > > + - ":entry" suffix means it probes entry of given symbols > > + (default) > > + - ":exit" suffix means it probes exit of given symbols. > > + - "%return" suffix means it probes exit of SYM (single > > + symbol). > > FETCHARGS : Arguments. Each probe can have up to 128 args. > > ARG : Fetch "ARG" function argument using BTF (only for > > function > > entry or tracepoint.) (\*1) >
