diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_active.c')
-rw-r--r-- | drivers/gpu/drm/i915/i915_active.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_active.c b/drivers/gpu/drm/i915/i915_active.c index 7b685032cc1e..5df7704369fd 100644 --- a/drivers/gpu/drm/i915/i915_active.c +++ b/drivers/gpu/drm/i915/i915_active.c @@ -939,6 +939,59 @@ void i915_active_noop(struct dma_fence *fence, struct dma_fence_cb *cb) active_fence_cb(fence, cb); } +struct auto_active { + struct i915_active base; + struct kref ref; +}; + +struct i915_active *i915_active_get(struct i915_active *ref) +{ + struct auto_active *aa = container_of(ref, typeof(*aa), base); + + kref_get(&aa->ref); + return &aa->base; +} + +static void auto_release(struct kref *ref) +{ + struct auto_active *aa = container_of(ref, typeof(*aa), ref); + + i915_active_fini(&aa->base); + kfree(aa); +} + +void i915_active_put(struct i915_active *ref) +{ + struct auto_active *aa = container_of(ref, typeof(*aa), base); + + kref_put(&aa->ref, auto_release); +} + +static int auto_active(struct i915_active *ref) +{ + i915_active_get(ref); + return 0; +} + +static void auto_retire(struct i915_active *ref) +{ + i915_active_put(ref); +} + +struct i915_active *i915_active_create(void) +{ + struct auto_active *aa; + + aa = kmalloc(sizeof(*aa), GFP_KERNEL); + if (!aa) + return NULL; + + kref_init(&aa->ref); + i915_active_init(&aa->base, auto_active, auto_retire); + + return &aa->base; +} + #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) #include "selftests/i915_active.c" #endif |