On Tue, 29 Oct 2013 14:20:09 +0100, Manuel Selva wrote: > One more thing I forgot to ask is clarification about the pid > parameter. According to Vince Weaver page: "If pid is 0, measurements > happen on the current thread, if pid is greater than 0, the process > indicated by pid is measured, and if pid is -1, all processes are > counted." and according to perf userland tool wiki page, it's possible > to attache to a specific thread with a -i option. As a consequence I > wonder how I can use the perf perf_event_sys_call to only count events > for a specific thread ?
In the syscall's point of view, pid is actually tid AFAIK - so I works on the thread-basis not the process. Thanks, Namhyung -- To unsubscribe from this list: send the line "unsubscribe linux-perf-users" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
