On Wed, Jun 16, 2010 at 4:52 PM, Peter Zijlstra <pet...@infradead.org> wrote: > On Wed, 2010-06-16 at 16:40 +0200, Stephane Eranian wrote: >> This leads me to another point. For per-thread sampling, why >> do we need to record mmap() events happening *outside* of >> the process? I can understand the exception of kernel modules. > > How does that happen? The per-thread events should be on the per-task > context, so another task's mmap() events should never end up there. >
I don't see the test that says the vma does not belong to the current task. I also don't see anything in perf_event_mmap_match(). It does seem to work as you said in recent kernels, though. So I am certainly missing something here. ------------------------------------------------------------------------------ ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo _______________________________________________ perfmon2-devel mailing list perfmon2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
