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| author | Divya Indi <divya.indi@oracle.com> | 2019-03-20 11:28:51 -0700 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2019-04-02 18:24:06 -0400 |
| commit | f45d1225adb0479478cee989e2ae2d7d2c62b31b (patch) | |
| tree | 26f5a37a5e1d60fd553a2cf583c19ac9df49d9a9 /kernel/trace/trace_events.c | |
| parent | 40ed29b373381532ef222e509c5aa69a1d8561ea (diff) | |
| download | linux-f45d1225adb0479478cee989e2ae2d7d2c62b31b.tar.bz2 | |
tracing: Kernel access to Ftrace instances
Ftrace provides the feature “instances” that provides the capability to
create multiple Ftrace ring buffers. However, currently these buffers
are created/accessed via userspace only. The kernel APIs providing these
features are not exported, hence cannot be used by other kernel
components.
This patch aims to extend this infrastructure to provide the
flexibility to create/log/remove/ enable-disable existing trace events
to these buffers from within the kernel.
Link: http://lkml.kernel.org/r/1553106531-3281-2-git-send-email-divya.indi@oracle.com
Signed-off-by: Divya Indi <divya.indi@oracle.com>
Reviewed-by: Joe Jin <joe.jin@oracle.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_events.c')
| -rw-r--r-- | kernel/trace/trace_events.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index 5b3b0c3c8a47..81c038ed6cee 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -832,6 +832,7 @@ static int ftrace_set_clr_event(struct trace_array *tr, char *buf, int set) return ret; } +EXPORT_SYMBOL_GPL(ftrace_set_clr_event); /** * trace_set_clr_event - enable or disable an event |