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| author |   Masami Hiramatsu <mhiramat@kernel.org> | 2017-05-23 15:05:50 +0900 |
|---|---|---|
| committer |   Shuah Khan <shuahkh@osg.samsung.com> | 2017-06-07 10:07:22 -0600 |
| commit | c3ca46ef719580eb01994fc6032db470fde92d85 (patch) | |
| tree | 67a07c2424c5d92894100fafd8413c357edd4cdc /kernel | |
| parent | selftests/ftrace: Reduce trace buffer checking overhead (diff) | |
| download | wireguard-linux-c3ca46ef719580eb01994fc6032db470fde92d85.tar.xz wireguard-linux-c3ca46ef719580eb01994fc6032db470fde92d85.zip | |
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')
| -rw-r--r-- | kernel/trace/trace.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 1122f151466f..dc3f91e70345 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" |