[PATCH v5 2/3] docs: tracing/fprobe: Document list filters and :entry/:exit

[Seokwoo Chung (Ryan)]

Signed-off-by: Seokwoo Chung (Ryan) <seokwoo.chung...@gmail.com>
---
 Documentation/trace/fprobetrace.rst | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/Documentation/trace/fprobetrace.rst 
b/Documentation/trace/fprobetrace.rst
index b4c2ca3d02c1..5efd9c374365 100644
--- a/Documentation/trace/fprobetrace.rst
+++ b/Documentation/trace/fprobetrace.rst
@@ -25,14 +25,19 @@ 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 [FETCHARGS]                  : Probe on function 
entry
+  f[MAXACTIVE][:[GRP1/][EVENT1]] SYM%return [FETCHARGS] : Probe on function 
exit
+  f[:[GRP1/][EVENT1] SYM[,[!]SYM[,...][:entry|:exit] [FETCHARGS] : Probe on
+  list/wildcard
   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.
  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 +45,13 @@ 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)
-- 
2.43.0