[for-next][PATCH 33/46] tracing: Make tracing_set_clock() non-static

Steven Rostedt
2018-03-21T02:25:12Z

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From: Tom Zanussi <tom.zanussi@linux.intel.com>

Allow tracing code outside of trace.c to access tracing_set_clock().

Some applications may require a particular clock in order to function
properly, such as latency calculations.

Also, add an accessor returning the current clock string.

Link: http://lkml.kernel.org/r/6d1c53e9ee2163f54e1849f5376573f54f0e6009.1516069914.git.tom.zanussi@linux.intel.com

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
kernel/trace/trace.c | 2 +-
kernel/trace/trace.h | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 68f8702af9fb..551a7cd0d705 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -6214,7 +6214,7 @@ static int tracing_clock_show(struct seq_file *m, void *v)
return 0;
}

-static int tracing_set_clock(struct trace_array *tr, const char *clockstr)
+int tracing_set_clock(struct trace_array *tr, const char *clockstr)
{
int i;

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 99b7ee7ed127..9de3e2a2f042 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -289,6 +289,7 @@ extern int trace_array_get(struct trace_array *tr);
extern void trace_array_put(struct trace_array *tr);

extern int tracing_set_time_stamp_abs(struct trace_array *tr, bool abs);
+extern int tracing_set_clock(struct trace_array *tr, const char *clockstr);

extern bool trace_clock_in_ns(struct trace_array *tr);

--
2.15.1