Messages in this thread Patch in this message | | | From | Jerry Snitselaar <> | Subject | [PATCH] tracing: Export tracing clock functions | Date | Thu, 30 Apr 2015 07:36:40 -0700 |
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Critical tracepoint hooks shoud never call anything that takes a lock, so they are unable to call getrawmonotonic() or ktime_get().
Export the rest of the tracing clock functions so can be used in tracepoint hooks.
Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com> --- kernel/trace/trace_clock.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/kernel/trace/trace_clock.c b/kernel/trace/trace_clock.c index 57b67b1..0f06532 100644 --- a/kernel/trace/trace_clock.c +++ b/kernel/trace/trace_clock.c @@ -56,6 +56,7 @@ u64 notrace trace_clock(void) { return local_clock(); } +EXPORT_SYMBOL_GPL(trace_clock); /* * trace_jiffy_clock(): Simply use jiffies as a clock counter. @@ -68,6 +69,7 @@ u64 notrace trace_clock_jiffies(void) { return jiffies_64_to_clock_t(jiffies_64 - INITIAL_JIFFIES); } +EXPORT_SYMBOL_GPL(trace_clock_jiffies); /* * trace_clock_global(): special globally coherent trace clock @@ -123,6 +125,7 @@ u64 notrace trace_clock_global(void) return now; } +EXPORT_SYMBOL_GPL(trace_clock_global); static atomic64_t trace_counter; -- 2.4.0.rc3.3.g6eb1401
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