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sna: Reuse the full size of an old handle for io 

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-12-01 13:49:03 +00:00
parent c5632369cb
commit e551987461
1 changed files with 25 additions and 10 deletions
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35
src/sna/kgem.c
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@ -2116,14 +2116,23 @@ struct kgem_bo *kgem_create_buffer(struct kgem *kgem,
alloc = (flags & KGEM_BUFFER_LAST) ? 4096 : 32 * 1024;
alloc = ALIGN(size, alloc);
bo = malloc(sizeof(*bo) + alloc);
if (bo == NULL)
return NULL;
handle = 0;
if (kgem->has_vmap)
if (kgem->has_vmap) {
bo = malloc(sizeof(*bo) + alloc);
if (bo == NULL)
return NULL;
handle = gem_vmap(kgem->fd, bo+1, alloc, write);
if (handle == 0) {
if (handle) {
__kgem_bo_init(&bo->base, handle, alloc);
bo->base.vmap = true;
bo->need_io = 0;
goto init;
} else
free(bo);
}
{
struct kgem_bo *old;
old = NULL;
@ -2132,6 +2141,11 @@ struct kgem_bo *kgem_create_buffer(struct kgem *kgem,
if (old == NULL)
old = search_linear_cache(kgem, alloc, false);
if (old) {
alloc = old->size;
bo = malloc(sizeof(*bo) + alloc);
if (bo == NULL)
return NULL;
memcpy(&bo->base, old, sizeof(*old));
if (old->rq)
list_replace(&old->request,
@ -2141,6 +2155,10 @@ struct kgem_bo *kgem_create_buffer(struct kgem *kgem,
free(old);
bo->base.refcnt = 1;
} else {
bo = malloc(sizeof(*bo) + alloc);
if (bo == NULL)
return NULL;
if (!__kgem_bo_init(&bo->base,
gem_create(kgem->fd, alloc),
alloc)) {
@ -2150,11 +2168,8 @@ struct kgem_bo *kgem_create_buffer(struct kgem *kgem,
}
bo->need_io = write;
bo->base.io = write;
} else {
__kgem_bo_init(&bo->base, handle, alloc);
bo->base.vmap = true;
bo->need_io = 0;
}
init:
bo->base.reusable = false;
bo->alloc = alloc;