Chris Wilson ba86bf8bfc drm/i915: Avoid potential sleep whilst holding spinlock ... Miles Lane reported the following error: 2 locks held by cat/4179: #0: (&p->lock){+.+.+.}, at: [<c10a3884>] seq_read+0x25/0x315 #1: (&dev_priv->mm.active_list_lock){+.+...}, at: [<c119a854>] i915_batchbuffer_info+0x2b/0x124 Pid: 4179, comm: cat Not tainted 2.6.32-rc5-git1 #2 Call Trace: [<c104874f>] ? __debug_show_held_locks+0x1e/0x20 [<c1023fb0>] __might_sleep+0xf0/0xf7 [<c101c393>] kmap+0x17/0x58 [<c119a8d6>] i915_batchbuffer_info+0xad/0x124 [<c10a39bf>] seq_read+0x160/0x315 [<c108fb8c>] ? rw_verify_area+0x98/0xbb [<c10a385f>] ? seq_read+0x0/0x315 [<c1090331>] vfs_read+0x75/0xa9 [<c10903f9>] sys_read+0x3b/0x5d [<c1002a8f>] sysenter_do_call+0x12/0x36 The fix is relatively simple, use the atomic variants of kmap() that avoid the potential sleep. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Miles Lane <miles.lane@gmail.com> Signed-off-by: Eric Anholt <eric@anholt.net>		2009-11-05 13:33:22 -08:00
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drm	drm/i915: Avoid potential sleep whilst holding spinlock	2009-11-05 13:33:22 -08:00
vga	PCI/vgaarb: cleanup some warnings + cleanup some comments.	2009-09-09 13:29:41 -07:00
Makefile	PCI/GPU: implement VGA arbitration on Linux	2009-09-09 13:29:36 -07:00