diff options
| author | Francisco Jerez <currojerez@riseup.net> | 2010-10-18 05:53:39 +0400 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2010-12-03 08:06:35 +0300 |
| commit | 3945e47543863385b54d94c94b023ee7ca9df972 (patch) | |
| tree | 209eb523c0e3a01069f8e18751b97373804a22d3 /drivers/gpu/drm/nouveau/nouveau_state.c | |
| parent | fcccab2e4eb8d579837481054cc2cb28eea0baef (diff) | |
| download | linux-3945e47543863385b54d94c94b023ee7ca9df972.tar.xz | |
drm/nouveau: Refactor context destruction to avoid a lock ordering issue.
The destroy_context() engine hooks call gpuobj management functions to
release the channel resources, these functions use HARDIRQ-unsafe locks
whereas destroy_context() is called with the HARDIRQ-safe
context_switch_lock held, that's a lock ordering violation.
Push the engine-specific channel destruction logic into destroy_context()
and let the hardware-specific code lock and unlock when it's actually
needed. Change the engine destruction order to avoid a race in the small
gap between pgraph and pfifo context uninitialization.
Reported-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_state.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_state.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c index 513c1063fb5e..1a4ba6ccafb1 100644 --- a/drivers/gpu/drm/nouveau/nouveau_state.c +++ b/drivers/gpu/drm/nouveau/nouveau_state.c @@ -137,7 +137,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev) engine->fifo.cache_pull = nv04_fifo_cache_pull; engine->fifo.channel_id = nv10_fifo_channel_id; engine->fifo.create_context = nv10_fifo_create_context; - engine->fifo.destroy_context = nv10_fifo_destroy_context; + engine->fifo.destroy_context = nv04_fifo_destroy_context; engine->fifo.load_context = nv10_fifo_load_context; engine->fifo.unload_context = nv10_fifo_unload_context; engine->display.early_init = nv04_display_early_init; @@ -191,7 +191,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev) engine->fifo.cache_pull = nv04_fifo_cache_pull; engine->fifo.channel_id = nv10_fifo_channel_id; engine->fifo.create_context = nv10_fifo_create_context; - engine->fifo.destroy_context = nv10_fifo_destroy_context; + engine->fifo.destroy_context = nv04_fifo_destroy_context; engine->fifo.load_context = nv10_fifo_load_context; engine->fifo.unload_context = nv10_fifo_unload_context; engine->display.early_init = nv04_display_early_init; @@ -245,7 +245,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev) engine->fifo.cache_pull = nv04_fifo_cache_pull; engine->fifo.channel_id = nv10_fifo_channel_id; engine->fifo.create_context = nv10_fifo_create_context; - engine->fifo.destroy_context = nv10_fifo_destroy_context; + engine->fifo.destroy_context = nv04_fifo_destroy_context; engine->fifo.load_context = nv10_fifo_load_context; engine->fifo.unload_context = nv10_fifo_unload_context; engine->display.early_init = nv04_display_early_init; @@ -302,7 +302,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev) engine->fifo.cache_pull = nv04_fifo_cache_pull; engine->fifo.channel_id = nv10_fifo_channel_id; engine->fifo.create_context = nv40_fifo_create_context; - engine->fifo.destroy_context = nv40_fifo_destroy_context; + engine->fifo.destroy_context = nv04_fifo_destroy_context; engine->fifo.load_context = nv40_fifo_load_context; engine->fifo.unload_context = nv40_fifo_unload_context; engine->display.early_init = nv04_display_early_init; |