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.
Cc: Chris Wilson
Signed-off-by: Robert Bragg
Signed-off-by: Zhenyu
Hi Robert,
[auto build test WARNING on v4.4-rc8]
[cannot apply to drm-intel/for-linux-next v4.5-rc2 v4.5-rc1 next-20160202]
[if your patch is applied to the wrong git tree, please drop us a note to help
improving the system]
url:
https://github.com/0day-ci/linux/commits/Robert-Bragg/Enable-G
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.
Cc: Chris Wilson
Signed-off-by: Robert Bragg
Signed-off-by: Zhenyu
