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| author | Masami Hiramatsu <mhiramat@kernel.org> | 2020-09-10 17:55:56 +0900 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-09-21 21:06:03 -0400 |
| commit | 638e476d1df6812fad0c700ee3e17727a4ff0d40 (patch) | |
| tree | 4e3e54724bc0a16fee0105472f8a3e901f6c5ec3 /Documentation/trace | |
| parent | 3dd3aae32dc91efab916b28cf95986186c6e8d6b (diff) | |
| download | linux-638e476d1df6812fad0c700ee3e17727a4ff0d40.tar.gz | |
Documentation: tracing: Add %return suffix description
Add a description of the %return suffix option for kprobe event and
uprobe event.
Link: https://lkml.kernel.org/r/159972815624.428528.10450874184415697524.stgit@devnote2
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'Documentation/trace')
| -rw-r--r-- | Documentation/trace/kprobetrace.rst | 2 | ||||
| -rw-r--r-- | Documentation/trace/uprobetracer.rst | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/trace/kprobetrace.rst b/Documentation/trace/kprobetrace.rst index c1709165c55353..a18eb97a263cea 100644 --- a/Documentation/trace/kprobetrace.rst +++ b/Documentation/trace/kprobetrace.rst @@ -30,6 +30,7 @@ Synopsis of kprobe_events p[:[GRP/]EVENT] [MOD:]SYM[+offs]|MEMADDR [FETCHARGS] : Set a probe r[MAXACTIVE][:[GRP/]EVENT] [MOD:]SYM[+0] [FETCHARGS] : Set a return probe + p:[GRP/]EVENT] [MOD:]SYM[+0]%return [FETCHARGS] : Set a return probe -:[GRP/]EVENT : Clear a probe GRP : Group name. If omitted, use "kprobes" for it. @@ -37,6 +38,7 @@ Synopsis of kprobe_events based on SYM+offs or MEMADDR. MOD : Module name which has given SYM. SYM[+offs] : Symbol+offset where the probe is inserted. + SYM%return : Return address of the symbol MEMADDR : Address where the probe is inserted. MAXACTIVE : Maximum number of instances of the specified function that can be probed simultaneously, or 0 for the default value diff --git a/Documentation/trace/uprobetracer.rst b/Documentation/trace/uprobetracer.rst index 98cde99939d73f..a8e5938f609e29 100644 --- a/Documentation/trace/uprobetracer.rst +++ b/Documentation/trace/uprobetracer.rst @@ -28,6 +28,7 @@ Synopsis of uprobe_tracer p[:[GRP/]EVENT] PATH:OFFSET [FETCHARGS] : Set a uprobe r[:[GRP/]EVENT] PATH:OFFSET [FETCHARGS] : Set a return uprobe (uretprobe) + p[:[GRP/]EVENT] PATH:OFFSET%return [FETCHARGS] : Set a return uprobe (uretprobe) -:[GRP/]EVENT : Clear uprobe or uretprobe event GRP : Group name. If omitted, "uprobes" is the default value. @@ -35,6 +36,7 @@ Synopsis of uprobe_tracer on PATH+OFFSET. PATH : Path to an executable or a library. OFFSET : Offset where the probe is inserted. + OFFSET%return : Offset where the return probe is inserted. FETCHARGS : Arguments. Each probe can have up to 128 args. %REG : Fetch register REG |