diff options
Diffstat (limited to 'include/drm/drmP.h')
| -rw-r--r-- | include/drm/drmP.h | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/include/drm/drmP.h b/include/drm/drmP.h index 84f1a8eefbdb..af8b71b2e5bd 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -52,6 +52,7 @@ #include <linux/poll.h> #include <linux/ratelimit.h> #include <linux/sched.h> +#include <linux/seqlock.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/vmalloc.h> @@ -392,11 +393,6 @@ struct drm_master { void *driver_priv; }; -/* Size of ringbuffer for vblank timestamps. Just double-buffer - * in initial implementation. - */ -#define DRM_VBLANKTIME_RBSIZE 2 - /* Flags and return codes for get_vblank_timestamp() driver function. */ #define DRM_CALLED_FROM_VBLIRQ 1 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0) @@ -725,10 +721,10 @@ struct drm_vblank_crtc { wait_queue_head_t queue; /**< VBLANK wait queue */ struct timer_list disable_timer; /* delayed disable timer */ - /* vblank counter, protected by dev->vblank_time_lock for writes */ - u32 count; - /* vblank timestamps, protected by dev->vblank_time_lock for writes */ - struct timeval time[DRM_VBLANKTIME_RBSIZE]; + seqlock_t seqlock; /* protects vblank count and time */ + + u32 count; /* vblank counter */ + struct timeval time; /* vblank timestamp */ atomic_t refcount; /* number of users of vblank interruptsper crtc */ u32 last; /* protected by dev->vbl_lock, used */ |