diff options
| author | Rob Clark <robclark@freedesktop.org> | 2013-12-13 12:48:30 -0500 |
|---|---|---|
| committer | Rob Clark <robclark@freedesktop.org> | 2013-12-13 15:48:10 -0500 |
| commit | 068ea68b3f7ebd5efcfcc2f6ae417651423c8382 (patch) | |
| tree | e094e44e8d01c33ab8e5d74aa489308f267d3eea /freedreno/freedreno_priv.h | |
| parent | 1489811a805fb6b5b19d61fa99b9b962cc06bd22 (diff) | |
freedreno: add bo cache
Workloads which create many transient buffers cause significant CPU
overhead in buffer allocation, zeroing, cache maint, and mmap setup.
By caching and re-using existing buffers, the CPU overhead drops
significantly. See:
http://bloggingthemonkey.blogspot.com/2013/09/freedreno-update-moar-fps.html
A simple time based policy is used for purging the cache. Once the
kernel supports it, we could use madvise style API to handle memory
pressure scenarios a bit better.
Signed-off-by: Rob Clark <robclark@freedesktop.org>
Diffstat (limited to 'freedreno/freedreno_priv.h')
| -rw-r--r-- | freedreno/freedreno_priv.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/freedreno/freedreno_priv.h b/freedreno/freedreno_priv.h index 69256f51..061d807e 100644 --- a/freedreno/freedreno_priv.h +++ b/freedreno/freedreno_priv.h @@ -59,6 +59,11 @@ struct fd_device_funcs { void (*destroy)(struct fd_device *dev); }; +struct fd_bo_bucket { + uint32_t size; + struct list_head list; +}; + struct fd_device { int fd; atomic_t refcnt; @@ -75,8 +80,17 @@ struct fd_device { void *handle_table, *name_table; struct fd_device_funcs *funcs; + + struct fd_bo_bucket cache_bucket[14 * 4]; + int num_buckets; + time_t time; }; +void fd_cleanup_bo_cache(struct fd_device *dev, time_t time); + +/* for where @table_lock is already held: */ +void fd_device_del_locked(struct fd_device *dev); + struct fd_pipe_funcs { struct fd_ringbuffer * (*ringbuffer_new)(struct fd_pipe *pipe, uint32_t size); int (*get_param)(struct fd_pipe *pipe, enum fd_param_id param, uint64_t *value); @@ -120,6 +134,10 @@ struct fd_bo { void *map; atomic_t refcnt; struct fd_bo_funcs *funcs; + + int bo_reuse; + struct list_head list; /* bucket-list entry */ + time_t free_time; /* time when added to bucket-list */ }; struct fd_bo *fd_bo_from_handle(struct fd_device *dev, |