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| author | Chris Wilson | 2018-01-24 12:36:07 +0100 |
|---|---|---|
| committer | Chris Wilson | 2018-01-24 16:28:05 +0100 |
| commit | 6f56103d7e95f96568a460493ff6c0ced45f538b (patch) | |
| tree | 5c9a75b671b256df69711adabf460101c046aeed /drivers/gpu/drm/i915/i915_drv.h | |
| parent | drm/i915/execlists: Inhibit context save/restore for the fake preempt context (diff) | |
| download | kernel-qcow2-linux-6f56103d7e95f96568a460493ff6c0ced45f538b.tar.gz kernel-qcow2-linux-6f56103d7e95f96568a460493ff6c0ced45f538b.tar.xz kernel-qcow2-linux-6f56103d7e95f96568a460493ff6c0ced45f538b.zip | |
drm/i915: Track the number of times we have woken the GPU up
By counting the number of times we have woken up, we have a very simple
means of defining an epoch, which will come in handy if we want to
perform deferred tasks at the end of an epoch (i.e. while we are going
to sleep) without imposing on the next activity cycle.
v2: No reason to specify precise number of bits here.
v3: Take Tvrtko's advice and reserve 0 as an invalid epoch.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180124113608.14909-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index c707eee2102b..1f9df2861d54 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2313,6 +2313,12 @@ struct drm_i915_private { bool awake; /** + * The number of times we have woken up. + */ + unsigned int epoch; +#define I915_EPOCH_INVALID 0 + + /** * We leave the user IRQ off as much as possible, * but this means that requests will finish and never * be retired once the system goes idle. Set a timer to |