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nouveau: Do not add most bo's to the global bo list. 

Only add wrapped bo's and bo's that have been exported through flink or dma-buf.
This avoids a lock in the common case, and decreases traversal needed for importing
a dma-buf or flink.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@ubuntu.com>
Tested-By: Emil Velikov <emil.l.velikov@gmail.com>
main
Maarten Lankhorst 2015-02-26 11:54:04 +01:00 committed by Maarten Lankhorst
parent 5ea6f1c326
commit ba5a0b6274
1 changed files with 22 additions and 24 deletions
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44
nouveau/nouveau.c
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@ -349,8 +349,8 @@ nouveau_bo_del(struct nouveau_bo *bo)
struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
struct drm_gem_close req = { bo->handle };
if (nvbo->head.next) {
pthread_mutex_lock(&nvdev->lock);
if (nvbo->name) {
if (atomic_read(&nvbo->refcnt) == 0) {
DRMLISTDEL(&nvbo->head);
/*
@ -365,8 +365,6 @@ nouveau_bo_del(struct nouveau_bo *bo)
}
pthread_mutex_unlock(&nvdev->lock);
} else {
DRMLISTDEL(&nvbo->head);
pthread_mutex_unlock(&nvdev->lock);
drmIoctl(bo->device->fd, DRM_IOCTL_GEM_CLOSE, &req);
}
if (bo->map)
@ -379,7 +377,6 @@ nouveau_bo_new(struct nouveau_device *dev, uint32_t flags, uint32_t align,
uint64_t size, union nouveau_bo_config *config,
struct nouveau_bo **pbo)
{
struct nouveau_device_priv *nvdev = nouveau_device(dev);
struct nouveau_bo_priv *nvbo = calloc(1, sizeof(*nvbo));
struct nouveau_bo *bo = &nvbo->base;
int ret;
@ -397,10 +394,6 @@ nouveau_bo_new(struct nouveau_device *dev, uint32_t flags, uint32_t align,
return ret;
}
pthread_mutex_lock(&nvdev->lock);
DRMLISTADD(&nvbo->head, &nvdev->bo_list);
pthread_mutex_unlock(&nvdev->lock);
*pbo = bo;
return 0;
}
@ -457,6 +450,18 @@ nouveau_bo_wrap_locked(struct nouveau_device *dev, uint32_t handle,
return -ENOMEM;
}
static void
nouveau_bo_make_global(struct nouveau_bo_priv *nvbo)
{
if (!nvbo->head.next) {
struct nouveau_device_priv *nvdev = nouveau_device(nvbo->base.device);
pthread_mutex_lock(&nvdev->lock);
if (!nvbo->head.next)
DRMLISTADD(&nvbo->head, &nvdev->bo_list);
pthread_mutex_unlock(&nvdev->lock);
}
}
drm_public int
nouveau_bo_wrap(struct nouveau_device *dev, uint32_t handle,
struct nouveau_bo **pbo)
@ -494,13 +499,16 @@ nouveau_bo_name_get(struct nouveau_bo *bo, uint32_t *name)
struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
*name = nvbo->name;
if (!*name || *name == ~0U) {
if (!*name) {
int ret = drmIoctl(bo->device->fd, DRM_IOCTL_GEM_FLINK, &req);
if (ret) {
*name = 0;
return ret;
}
nvbo->name = *name = req.name;
nouveau_bo_make_global(nvbo);
}
return 0;
}
@ -533,16 +541,6 @@ nouveau_bo_prime_handle_ref(struct nouveau_device *dev, int prime_fd,
ret = drmPrimeFDToHandle(dev->fd, prime_fd, &handle);
if (ret == 0) {
ret = nouveau_bo_wrap_locked(dev, handle, bo, 0);
if (!ret) {
struct nouveau_bo_priv *nvbo = nouveau_bo(*bo);
if (!nvbo->name) {
/*
* XXX: Force locked DRM_IOCTL_GEM_CLOSE
* to rule out race conditions
*/
nvbo->name = ~0;
}
}
}
pthread_mutex_unlock(&nvdev->lock);
return ret;
@ -557,8 +555,8 @@ nouveau_bo_set_prime(struct nouveau_bo *bo, int *prime_fd)
ret = drmPrimeHandleToFD(bo->device->fd, nvbo->base.handle, DRM_CLOEXEC, prime_fd);
if (ret)
return ret;
if (!nvbo->name)
nvbo->name = ~0;
nouveau_bo_make_global(nvbo);
return 0;
}
@ -578,8 +576,8 @@ nouveau_bo_wait(struct nouveau_bo *bo, uint32_t access,
if (push && push->channel)
nouveau_pushbuf_kick(push, push->channel);
if (!nvbo->name && !(nvbo->access & NOUVEAU_BO_WR) &&
!( access & NOUVEAU_BO_WR))
if (!nvbo->head.next && !(nvbo->access & NOUVEAU_BO_WR) &&
!(access & NOUVEAU_BO_WR))
return 0;
req.handle = bo->handle;