Hi, David On Fri, 06 Jul 2012 11:27:39 -0600, David Ahern wrote: > What config options need to be enabled for 'perf lock record' to work? > I tried a number of custom builds and stock Fedora kernels. I always > get: > > $ perf lock record -- sleep 1 > invalid or unsupported event: 'lock:lock_acquire' > > Though trace_lock_acquire exists, CONFIG_LOCKDEP is set, and ftrace is > enabled. > > What am I missing? >
Weird. AFAICS lock_acquire and lock_release depend on CONFIG_LOCKDEP, and lock_acquired and lock_contented depend on CONFIG_LOCK_STAT (I guess it should be warned/commented somewhere?). Maybe CONFIG_EVENT_TRACING? Thanks, Namhyung -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
