On Fri, 30 Mar 2018 16:01:31 +0100 Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote: > Across suspend, we may see a very large drift in timestamps if the sched > clock is unstable, prompting the global trace's ringbuffer code to warn > and suggest switching to the global clock. Preempt this request by > detecting when the sched clock is unstable (determined during > late_initcall) and automatically switching the default clock over to > trace_global_clock. > > This should prevent requiring user interaction to resolve warnings such > as: > > Delta way too big! 18446743856563626466 ts=18446744054496180323 write stamp = 197932553857 > If you just came from a suspend/resume, > please switch to the trace global clock: > echo global > /sys/kernel/debug/tracing/trace_clock > > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx> > --- > v2: Tell the user what's happening and what they can do to correct it. > Thanks, I pulled them in. I'll start testing them before I post to git. -- Steve _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
