[Intel-gfx] [PATCH 2/3] drm/i915/perf: better pipeline aged/aging tail updates

[Matthew Auld]

On 22 February 2017 at 15:25, Robert Bragg <robert at sixbynine.org> wrote:
> This updates the tail pointer race workaround handling to updating the
> 'aged' pointer before looking to start aging a new one. There's the
> possibility that there is already new data available and so we can
> immediately start aging a new pointer without having to first wait for a
> later hrtimer callback (and then another to age).
>
> Signed-off-by: Robert Bragg <robert at sixbynine.org>
Reviewed-by: Matthew Auld <matthew.auld at intel.com>