On Mon, Mar 08, 2021 at 05:11:43PM +0200, Adrian Hunter wrote: > The only requirement of an auxtrace queue is that the buffers are in > time order. That is achieved by making separate queues for separate > perf buffer or AUX area buffer mmaps. > > That generally means a separate queue per cpu for per-cpu contexts, > and a separate queue per thread for per-task contexts. > > When buffers are added to a queue, perf checks that the buffer cpu > and thread id (tid) match the queue cpu and thread id. > > However, generally, that need not be true, and perf will queue > buffers correctly anyway, so the check is not needed. > > In addition, the check gets erroneously hit when using sample mode > to trace multiple threads. > > Consequently, fix that case by removing the check.
Thanks! Reviewed-by: Andi Kleen <a...@linux.intel.com> -Andi
