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author | Maarten Lankhorst <m.b.lankhorst@gmail.com> | 2013-06-27 11:48:17 (GMT) |
---|---|---|
committer | Dave Airlie <airlied@redhat.com> | 2013-06-28 02:02:20 (GMT) |
commit | ecff665f5e3f1c6909353e00b9420e45ae23d995 (patch) | |
tree | 8fed7d4570ec707427e954c6d2695d1549e08364 /drivers/gpu/drm/nouveau/nouveau_gem.c | |
parent | 786d7257e537da0674c02e16e3b30a44665d1cee (diff) | |
download | linux-fsl-qoriq-ecff665f5e3f1c6909353e00b9420e45ae23d995.tar.xz |
drm/ttm: make ttm reservation calls behave like reservation calls
This commit converts the source of the val_seq counter to
the ww_mutex api. The reservation objects are converted later,
because there is still a lockdep splat in nouveau that has to
resolved first.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_gem.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_gem.c | 38 |
1 files changed, 25 insertions, 13 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index 7054706..e35d468 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -277,10 +277,12 @@ struct validate_op { struct list_head vram_list; struct list_head gart_list; struct list_head both_list; + struct ww_acquire_ctx ticket; }; static void -validate_fini_list(struct list_head *list, struct nouveau_fence *fence) +validate_fini_list(struct list_head *list, struct nouveau_fence *fence, + struct ww_acquire_ctx *ticket) { struct list_head *entry, *tmp; struct nouveau_bo *nvbo; @@ -297,17 +299,24 @@ validate_fini_list(struct list_head *list, struct nouveau_fence *fence) list_del(&nvbo->entry); nvbo->reserved_by = NULL; - ttm_bo_unreserve(&nvbo->bo); + ttm_bo_unreserve_ticket(&nvbo->bo, ticket); drm_gem_object_unreference_unlocked(nvbo->gem); } } static void -validate_fini(struct validate_op *op, struct nouveau_fence* fence) +validate_fini_no_ticket(struct validate_op *op, struct nouveau_fence *fence) { - validate_fini_list(&op->vram_list, fence); - validate_fini_list(&op->gart_list, fence); - validate_fini_list(&op->both_list, fence); + validate_fini_list(&op->vram_list, fence, &op->ticket); + validate_fini_list(&op->gart_list, fence, &op->ticket); + validate_fini_list(&op->both_list, fence, &op->ticket); +} + +static void +validate_fini(struct validate_op *op, struct nouveau_fence *fence) +{ + validate_fini_no_ticket(op, fence); + ww_acquire_fini(&op->ticket); } static int @@ -317,13 +326,11 @@ validate_init(struct nouveau_channel *chan, struct drm_file *file_priv, { struct nouveau_cli *cli = nouveau_cli(file_priv); struct drm_device *dev = chan->drm->dev; - struct nouveau_drm *drm = nouveau_drm(dev); - uint32_t sequence; int trycnt = 0; int ret, i; struct nouveau_bo *res_bo = NULL; - sequence = atomic_add_return(1, &drm->ttm.validate_sequence); + ww_acquire_init(&op->ticket, &reservation_ww_class); retry: if (++trycnt > 100000) { NV_ERROR(cli, "%s failed and gave up.\n", __func__); @@ -338,6 +345,7 @@ retry: gem = drm_gem_object_lookup(dev, file_priv, b->handle); if (!gem) { NV_ERROR(cli, "Unknown handle 0x%08x\n", b->handle); + ww_acquire_done(&op->ticket); validate_fini(op, NULL); return -ENOENT; } @@ -352,21 +360,23 @@ retry: NV_ERROR(cli, "multiple instances of buffer %d on " "validation list\n", b->handle); drm_gem_object_unreference_unlocked(gem); + ww_acquire_done(&op->ticket); validate_fini(op, NULL); return -EINVAL; } - ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence); + ret = ttm_bo_reserve(&nvbo->bo, true, false, true, &op->ticket); if (ret) { - validate_fini(op, NULL); + validate_fini_no_ticket(op, NULL); if (unlikely(ret == -EAGAIN)) { - sequence = atomic_add_return(1, &drm->ttm.validate_sequence); ret = ttm_bo_reserve_slowpath(&nvbo->bo, true, - sequence); + &op->ticket); if (!ret) res_bo = nvbo; } if (unlikely(ret)) { + ww_acquire_done(&op->ticket); + ww_acquire_fini(&op->ticket); drm_gem_object_unreference_unlocked(gem); if (ret != -ERESTARTSYS) NV_ERROR(cli, "fail reserve\n"); @@ -390,6 +400,7 @@ retry: NV_ERROR(cli, "invalid valid domains: 0x%08x\n", b->valid_domains); list_add_tail(&nvbo->entry, &op->both_list); + ww_acquire_done(&op->ticket); validate_fini(op, NULL); return -EINVAL; } @@ -397,6 +408,7 @@ retry: goto retry; } + ww_acquire_done(&op->ticket); return 0; } |