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authorMasami Hiramatsu <mhiramat@kernel.org>2017-05-23 15:05:50 +0900
committerShuah Khan <shuahkh@osg.samsung.com>2017-06-07 10:07:22 -0600
commitc3ca46ef719580eb01994fc6032db470fde92d85 (patch)
tree67a07c2424c5d92894100fafd8413c357edd4cdc /kernel/trace
parent1d0864db8f3af3978d7b5207f9165fbe2a37148c (diff)
downloadop-kernel-dev-c3ca46ef719580eb01994fc6032db470fde92d85.zip
op-kernel-dev-c3ca46ef719580eb01994fc6032db470fde92d85.tar.gz
ftrace/kprobes: selftests: Check kretprobe maxactive is supported
Check the kretprobe maxactive is supported by kprobe_events interface. To ensure the kernel feature, this changes ftrace README to describe it. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Diffstat (limited to 'kernel/trace')
-rw-r--r--kernel/trace/trace.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 1122f15..dc3f91e 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -4473,7 +4473,8 @@ static const char readme_msg[] =
#endif
#if defined(CONFIG_KPROBE_EVENTS) || defined(CONFIG_UPROBE_EVENTS)
"\t accepts: event-definitions (one definition per line)\n"
- "\t Format: p|r[:[<group>/]<event>] <place> [<args>]\n"
+ "\t Format: p[:[<group>/]<event>] <place> [<args>]\n"
+ "\t r[maxactive][:[<group>/]<event>] <place> [<args>]\n"
"\t -:[<group>/]<event>\n"
#ifdef CONFIG_KPROBE_EVENTS
"\t place: [<module>:]<symbol>[+<offset>]|<memaddr>\n"
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