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drm/vmwgfx: Relax irq locking somewhat

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Relax locking with the goal of reducing the number of locking cycles and
time spent with irqs disabled.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
This commit is contained in:
Thomas Hellstrom
2015-10-28 19:07:35 +01:00
parent 4e0858a682
commit d2e8851a90
4 changed files with 42 additions and 102 deletions
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9
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
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@@ -440,13 +440,12 @@ struct vmw_private {
spinlock_t waiter_lock;
int fence_queue_waiters; /* Protected by waiter_lock */
int goal_queue_waiters; /* Protected by waiter_lock */
int cmdbuf_waiters; /* Protected by irq_lock */
int error_waiters; /* Protected by irq_lock */
atomic_t fifo_queue_waiters;
int cmdbuf_waiters; /* Protected by waiter_lock */
int error_waiters; /* Protected by waiter_lock */
int fifo_queue_waiters; /* Protected by waiter_lock */
uint32_t last_read_seqno;
spinlock_t irq_lock;
struct vmw_fence_manager *fman;
uint32_t irq_mask;
uint32_t irq_mask; /* Updates protected by waiter_lock */
/*
* Device state