fdo-mirrors/mesa-drm
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/drm.git synced 2025-12-31 09:00:17 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

intel: Remember named bo

Browse source 
... and if asked to open a bo by the same global name, return a fresh
reference to the previously allocated buffer.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-02-14 09:39:06 +00:00
parent 53581b6210
commit 36d4939343
1 changed files with 28 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

28
intel/intel_bufmgr_gem.c
View file

@ -95,6 +95,8 @@ typedef struct _drm_intel_bufmgr_gem {
int num_buckets;
time_t time;
drmMMListHead named;
uint64_t gtt_size;
int available_fences;
int pci_device;
@ -124,6 +126,7 @@ struct _drm_intel_bo_gem {
* Kenel-assigned global name for this object
*/
unsigned int global_name;
drmMMListHead name_list;
/**
* Index of the buffer within the validation list while preparing a
@ -690,6 +693,8 @@ retry:
drm_intel_gem_bo_free(&bo_gem->bo);
return NULL;
}
DRMINITLISTHEAD(&bo_gem->name_list);
}
bo_gem->name = name;
@ -792,6 +797,23 @@ drm_intel_bo_gem_create_from_name(drm_intel_bufmgr *bufmgr,
int ret;
struct drm_gem_open open_arg;
struct drm_i915_gem_get_tiling get_tiling;
drmMMListHead *list;
/* At the moment most applications only have a few named bo.
* For instance, in a DRI client only the render buffers passed
* between X and the client are named. And since X returns the
* alternating names for the front/back buffer a linear search
* provides a sufficiently fast match.
*/
for (list = bufmgr_gem->named.next;
list != &bufmgr_gem->named;
list = list->next) {
bo_gem = DRMLISTENTRY(drm_intel_bo_gem, list, name_list);
if (bo_gem->global_name == handle) {
drm_intel_gem_bo_reference(&bo_gem->bo);
return &bo_gem->bo;
}
}
bo_gem = calloc(1, sizeof(*bo_gem));
if (!bo_gem)
@ -834,6 +856,7 @@ drm_intel_bo_gem_create_from_name(drm_intel_bufmgr *bufmgr,
/* XXX stride is unknown */
drm_intel_bo_gem_set_in_aperture_size(bufmgr_gem, bo_gem);
DRMLISTADDTAIL(&bo_gem->name_list, &bufmgr_gem->named);
DBG("bo_create_from_handle: %d (%s)\n", handle, bo_gem->name);
return &bo_gem->bo;
@ -925,6 +948,8 @@ drm_intel_gem_bo_unreference_final(drm_intel_bo *bo, time_t time)
bo_gem->relocs = NULL;
}
DRMLISTDEL(&bo_gem->name_list);
bucket = drm_intel_gem_bo_bucket_for_size(bufmgr_gem, bo->size);
/* Put the buffer into our internal cache for reuse if we can. */
if (bufmgr_gem->bo_reuse && bo_gem->reusable && bucket != NULL &&
@ -1771,6 +1796,8 @@ drm_intel_gem_bo_flink(drm_intel_bo *bo, uint32_t * name)
return -errno;
bo_gem->global_name = flink.name;
bo_gem->reusable = 0;
DRMLISTADDTAIL(&bo_gem->name_list, &bufmgr_gem->named);
}
*name = bo_gem->global_name;
@ -2217,6 +2244,7 @@ drm_intel_bufmgr_gem_init(int fd, int batch_size)
drm_intel_gem_get_pipe_from_crtc_id;
bufmgr_gem->bufmgr.bo_references = drm_intel_gem_bo_references;
DRMINITLISTHEAD(&bufmgr_gem->named);
init_cache_buckets(bufmgr_gem);
return &bufmgr_gem->bufmgr;