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winsys/svga: Replace the query mm buffer pool with a slab pool v3

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This is to avoid running out of query buffer space due to winsys
limitations. Instead of a fixed size per screen pool of query buffers,
use a slab allocator that allocates a new slab if we run out of space
in the first one.

v2: Correct email addresses.
v3: s/8192/VMW_QUERY_POOL_SIZE/. Improve documentation and log message.

Reported-and-tested-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Cc: "10.1" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit 5dc206525b)
This commit is contained in:
Thomas Hellstrom 2014-03-31 09:01:24 +02:00 • committed by Carl Worth
parent e144e14c0a
commit 95bba69398
1 changed files with 13 additions and 5 deletions
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18
src/gallium/winsys/svga/drm/vmw_screen_pools.c
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@ -76,15 +76,23 @@ vmw_pools_cleanup(struct vmw_winsys_screen *vws)
*
* Typically this pool should be created on demand when we
* detect that the app will be using queries. There's nothing
* special with this pool other than the backing kernel buffer size,
* which is limited to 8192.
* special with this pool other than the backing kernel buffer sizes,
* which are limited to 8192.
* If there is a performance issue with allocation and freeing of the
* query slabs, it should be easily fixable by allocating them out
* of a buffer cache.
*/
boolean
vmw_query_pools_init(struct vmw_winsys_screen *vws)
{
vws->pools.query_mm = mm_bufmgr_create(vws->pools.gmr,
VMW_QUERY_POOL_SIZE,
3 /* 8 alignment */);
struct pb_desc desc;
desc.alignment = 16;
desc.usage = ~(VMW_BUFFER_USAGE_SHARED | VMW_BUFFER_USAGE_SYNC);
vws->pools.query_mm = pb_slab_range_manager_create(vws->pools.gmr, 16, 128,
VMW_QUERY_POOL_SIZE,
&desc);
if (!vws->pools.query_mm)
return FALSE;