* [PATCH] libtracefs: Change tracefs_tracers()to accept NULL pointer
@ 2020-12-17 9:46 Tzvetomir Stoyanov (VMware)
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From: Tzvetomir Stoyanov (VMware) @ 2020-12-17 9:46 UTC (permalink / raw)
To: rostedt; +Cc: linux-trace-devel
From: Tzvetomir (VMware) Stoyanov <tz.stoyanov@gmail.com>
In order to be consistent with the other libtracefs APIs, the
char **tracefs_tracers(const char *tracing_dir);
function is changed to accept NULL pointer as valid input argument.
If NULL is passed, the tracers of the top instance are returned.
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
src/tracefs-events.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/tracefs-events.c b/src/tracefs-events.c
index 8cdec8e..58fa153 100644
--- a/src/tracefs-events.c
+++ b/src/tracefs-events.c
@@ -406,6 +406,9 @@ char **tracefs_tracers(const char *tracing_dir)
int len;
int ret;
+ if (!tracing_dir)
+ tracing_dir = tracefs_get_tracing_dir();
+
if (!tracing_dir)
return NULL;
--
2.28.0
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2020-12-17 9:46 [PATCH] libtracefs: Change tracefs_tracers()to accept NULL pointer Tzvetomir Stoyanov (VMware)
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