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tracing: Make tracing_set_clock() non-static

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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>
This commit is contained in:
Tom Zanussi 2018-01-15 20:52:07 -06:00 committed by Steven Rostedt (VMware)
parent 033cbceefa
commit d71bd34d78
2 changed files with 2 additions and 1 deletions
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2
kernel/trace/trace.c
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@ -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;

1
kernel/trace/trace.h
View File

@ -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);