On Wed, Jun 18, 2014 at 09:23:06PM -0400, Rob Clark wrote: > On Wed, Jun 18, 2014 at 9:13 PM, Greg KH <gregkh at linuxfoundation.org> > wrote: > > On Wed, Jun 18, 2014 at 12:36:54PM +0200, Maarten Lankhorst wrote: > >> +#define CREATE_TRACE_POINTS > >> +#include <trace/events/fence.h> > >> + > >> +EXPORT_TRACEPOINT_SYMBOL(fence_annotate_wait_on); > >> +EXPORT_TRACEPOINT_SYMBOL(fence_emit); > > > > Are you really willing to live with these as tracepoints for forever? > > What is the use of them in debugging? Was it just for debugging the > > fence code, or for something else? > > fwiw, the goal is something like this: > > http://people.freedesktop.org/~robclark/perf-supertuxkart.svg > > but without needing to make perf understand each driver's custom trace events > > (from: > http://bloggingthemonkey.blogspot.com/2013/09/freedreno-update-moar-fps.html > )
Will these tracepoints provide something like that? If so, great, but I want to make sure as these now become a user/kernel ABI that you can not break. thanks, greg k-h
