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a7fa1c7cc3
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Mon Jan 14 15:08:14 2013 +0100
drm/ttm: fix fence locking in ttm_buffer_object_transfer, 2nd try
This fixes up
commit e8e89622ed361c46bf90ba4828e685a8b603f7e5
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue Dec 18 22:25:11 2012 +0100
drm/ttm: fix fence locking in ttm_buffer_object_transfer
which leaves behind a might_sleep in atomic context, since the
fence_lock spinlock is held over a kmalloc(GFP_KERNEL) call. The fix
is to revert the above commit and only take the lock where we need it,
around the call to ->sync_obj_ref.
v2: Fixup things noticed by Maarten Lankhorst:
- Brown paper bag locking bug.
- No need for kzalloc if we clear the entire thing on the next line.
- check for bo->sync_obj (totally unlikely race, but still someone
else could have snuck in) and clear fbo->sync_obj if it's cleared
already.
Reported-by: Dave Airlie <airlied@gmail.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Approved by: kib@
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||
|---|---|---|
| .. | ||
| i915 | ||
| ttm | ||
| drm.h | ||
| drm_agpsupport.c | ||
| drm_atomic.h | ||
| drm_auth.c | ||
| drm_buffer.c | ||
| drm_buffer.h | ||
| drm_bufs.c | ||
| drm_context.c | ||
| drm_core.h | ||
| drm_crtc.c | ||
| drm_crtc.h | ||
| drm_crtc_helper.c | ||
| drm_crtc_helper.h | ||
| drm_dma.c | ||
| drm_dp_helper.c | ||
| drm_dp_helper.h | ||
| drm_dp_iic_helper.c | ||
| drm_drawable.c | ||
| drm_drv.c | ||
| drm_edid.c | ||
| drm_edid.h | ||
| drm_edid_modes.h | ||
| drm_fb_helper.c | ||
| drm_fb_helper.h | ||
| drm_fixed.h | ||
| drm_fops.c | ||
| drm_fourcc.h | ||
| drm_gem.c | ||
| drm_gem_names.c | ||
| drm_gem_names.h | ||
| drm_global.c | ||
| drm_global.h | ||
| drm_hashtab.c | ||
| drm_hashtab.h | ||
| drm_internal.h | ||
| drm_ioc32.c | ||
| drm_ioctl.c | ||
| drm_irq.c | ||
| drm_linux_list.h | ||
| drm_linux_list_sort.c | ||
| drm_lock.c | ||
| drm_memory.c | ||
| drm_mm.c | ||
| drm_mm.h | ||
| drm_mode.h | ||
| drm_modes.c | ||
| drm_os_freebsd.h | ||
| drm_pci.c | ||
| drm_pciids.h | ||
| drm_sarea.h | ||
| drm_scatter.c | ||
| drm_sman.c | ||
| drm_sman.h | ||
| drm_stub.c | ||
| drm_sysctl.c | ||
| drm_vm.c | ||
| drmP.h | ||