[PATCH v2 5/6] Documentation: tracing: Add %return suffix description
From: Masami Hiramatsu <mhiramat@kernel.org>
Date: 2020-09-01 07:57:39
Also in:
lkml
Subsystem:
documentation, the rest, tracing · Maintainers:
Jonathan Corbet, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
Add a description of the %return suffix option for kprobe tracer. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> --- Changes in v2 - Use a tab for indentation as other lines do. --- Documentation/trace/kprobetrace.rst | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/Documentation/trace/kprobetrace.rst b/Documentation/trace/kprobetrace.rst
index c1709165c553..a18eb97a263c 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