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Peter Zijlstra
394ee07623
Provide the generic callchain support bits. If hw_event->callchain is set the arch specific perf_callchain() function is called upon to provide a perf_callchain_entry structure filled with the current callchain. If it does so, it is added to the overflow output event. Signed-off-by: Peter Zijlstra <[email protected]> Acked-by: Paul Mackerras <[email protected]> Orig-LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>