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panfrost: Stub out panfrost_bo_cache_put

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..so we can intercept the BO free.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This commit is contained in:
Alyssa Rosenzweig
2019-07-15 08:19:53 -07:00
parent b5a28f61ae
commit 74ad5f89f8
4 changed files with 34 additions and 3 deletions
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14
src/gallium/drivers/panfrost/pan_bo_cache.c
View File

@@ -34,3 +34,17 @@ panfrost_bo_cache_fetch(
/* Stub */ /* Stub */
return NULL; return NULL;
} }
/* Tries to add a BO to the cache. Returns if it was
* successful */
bool
panfrost_bo_cache_put(
struct panfrost_screen *screen,
struct panfrost_bo *bo)
{
/* Stub */
return false;
}

14
src/gallium/drivers/panfrost/pan_drm.c
View File

@@ -134,7 +134,7 @@ panfrost_drm_create_bo(struct panfrost_screen *screen, size_t size,
} }
void void
panfrost_drm_release_bo(struct panfrost_screen *screen, struct panfrost_bo *bo) panfrost_drm_release_bo(struct panfrost_screen *screen, struct panfrost_bo *bo, bool cacheable)
{ {
struct drm_gem_close gem_close = { .handle = bo->gem_handle }; struct drm_gem_close gem_close = { .handle = bo->gem_handle };
int ret; int ret;
@@ -142,6 +142,18 @@ panfrost_drm_release_bo(struct panfrost_screen *screen, struct panfrost_bo *bo)
if (!bo) if (!bo)
return; return;
/* Rather than freeing the BO now, we'll cache the BO for later
* allocations if we're allowed to */
if (cacheable) {
bool cached = panfrost_bo_cache_put(screen, bo);
if (cached)
return;
}
/* Otherwise, if the BO wasn't cached, we'll legitimately free the BO */
panfrost_drm_munmap_bo(screen, bo); panfrost_drm_munmap_bo(screen, bo);
ret = drmIoctl(screen->fd, DRM_IOCTL_GEM_CLOSE, &gem_close); ret = drmIoctl(screen->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);

2
src/gallium/drivers/panfrost/pan_resource.c
View File

@@ -445,7 +445,7 @@ panfrost_bo_unreference(struct pipe_screen *screen, struct panfrost_bo *bo)
/* When the reference count goes to zero, we need to cleanup */ /* When the reference count goes to zero, we need to cleanup */
if (pipe_reference(&bo->reference, NULL)) if (pipe_reference(&bo->reference, NULL))
panfrost_drm_release_bo(pan_screen(screen), bo); panfrost_drm_release_bo(pan_screen(screen), bo, true);
} }
static void static void

7
src/gallium/drivers/panfrost/pan_screen.h
View File

@@ -137,7 +137,7 @@ panfrost_drm_create_bo(struct panfrost_screen *screen, size_t size,
void void
panfrost_drm_mmap_bo(struct panfrost_screen *screen, struct panfrost_bo *bo); panfrost_drm_mmap_bo(struct panfrost_screen *screen, struct panfrost_bo *bo);
void void
panfrost_drm_release_bo(struct panfrost_screen *screen, struct panfrost_bo *bo); panfrost_drm_release_bo(struct panfrost_screen *screen, struct panfrost_bo *bo, bool cacheable);
struct panfrost_bo * struct panfrost_bo *
panfrost_drm_import_bo(struct panfrost_screen *screen, int fd); panfrost_drm_import_bo(struct panfrost_screen *screen, int fd);
int int
@@ -166,5 +166,10 @@ panfrost_bo_cache_fetch(
struct panfrost_screen *screen, struct panfrost_screen *screen,
size_t size, uint32_t flags); size_t size, uint32_t flags);
bool
panfrost_bo_cache_put(
struct panfrost_screen *screen,
struct panfrost_bo *bo);
#endif /* PAN_SCREEN_H */ #endif /* PAN_SCREEN_H */