On Mon, 2016-11-07 at 11:49 -0800, Robert Bragg wrote: > Gen graphics hardware can be set up to periodically write snapshots of > performance counters into a circular buffer via its Observation > Architecture and this patch exposes that capability to userspace via > the > i915 perf interface. > > v2: > Make sure to initialize ->specific_ctx_id when opening, without > relying on _pin_notify hook, in case ctx already pinned. > v3: > Revert back to pinning ctx upfront when opening stream, removing > need to hook in to pinning and to update OACONTROL on the fly. > > Signed-off-by: Robert Bragg <robert@xxxxxxxxxxxxx> > Signed-off-by: Zhenyu Wang <zhenyuw@xxxxxxxxxxxxxxx> > Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx> Have been working for quite some time on extending the interfaces per the usecase of multiple concurrent streams (on different engines), and infrastructure fits quite well for these usecases. With Chris' comments addressed, the patch can have my r-b. Reviewed-by: Sourab Gupta <sourab.gupta@xxxxxxxxx> _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
