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
..
accessibility
acpi	Merge branch 'misc' into release	2009-10-15 00:47:13 -04:00
amba
ata	sata_via: Remove redundant device ID for VIA VT8261	2009-11-03 14:27:06 -05:00
atm
auxdisplay
base	PM: Remove some debug messages producing too much noise	2009-11-03 11:18:18 +01:00
block	loop: fix NULL dereference if mount fails	2009-10-29 07:39:27 -07:00
bluetooth
cdrom
char	Merge branch 'bugfix' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen	2009-11-05 10:58:07 -08:00
clocksource
connector
cpufreq
cpuidle	cpuidle: always return with interrupts enabled	2009-10-29 07:39:31 -07:00
crypto
dca
dio
dma
edac	amd64_edac: fix CECCs reporting	2009-11-04 14:04:06 +01:00
eisa
firewire	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6	2009-10-14 15:36:19 -07:00
firmware
gpio	twl4030-gpio: remove __devexit markings from remove func	2009-10-29 07:39:30 -07:00
gpu	drm/i915: Avoid potential sleep whilst holding spinlock	2009-11-05 13:33:22 -08:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid	2009-10-13 10:10:33 -07:00
hwmon	Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging	2009-10-29 08:14:58 -07:00
i2c	i2c-mpc: Do not generate STOP after read.	2009-11-02 23:28:47 +00:00
ide	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6	2009-10-29 09:22:34 -07:00
idle
ieee1394	headers: remove sched.h from interrupt.h	2009-10-11 11:20:58 -07:00
ieee802154
infiniband	headers: remove sched.h from interrupt.h	2009-10-11 11:20:58 -07:00
input	Input: gpio-keys - use IRQF_SHARED	2009-11-02 22:12:37 -08:00
isdn	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2009-10-29 09:22:08 -07:00
leds
lguest	headers: remove sched.h from interrupt.h	2009-10-11 11:20:58 -07:00
macintosh	powerpc/pmac: Fix issues with sleep on some powerbooks	2009-10-14 16:58:35 +11:00
mca
md	Merge branch 'for-linus' of git://neil.brown.name/md	2009-10-31 12:12:19 -07:00
media	headers: remove sched.h from interrupt.h	2009-10-11 11:20:58 -07:00
memstick
message	headers: remove sched.h from interrupt.h	2009-10-11 11:20:58 -07:00
mfd	mfd: Do not dereference null pointer in twl4030 error path	2009-10-27 00:20:33 +01:00
misc	sgi-gru: decrapfiy options_write() function	2009-11-05 10:48:30 -08:00
mmc	omap_hsmmc: add missing probe handler hook	2009-10-29 07:39:25 -07:00
mtd	UBI: fix check on unsigned long	2009-10-20 10:13:49 +03:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2009-11-03 07:44:01 -08:00
nubus
of	of: Remove nested function	2009-10-15 09:58:27 -06:00
oprofile
parisc
parport
pci	Revert "PCI: get larger bridge ranges when space is available"	2009-10-27 09:39:18 -07:00
pcmcia	PM / yenta: Split resume into early and late parts (rev. 4)	2009-11-03 10:54:58 +01:00
platform	Merge branch 'misc' into release	2009-10-15 00:47:13 -04:00
pnp
power
pps
ps3
rapidio
regulator
rtc	headers: remove sched.h from interrupt.h	2009-10-11 11:20:58 -07:00
s390	Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6	2009-10-31 12:14:56 -07:00
sbus
scsi	dpt_i2o: Fix typo of EINVAL	2009-10-31 12:11:38 -07:00
serial	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2009-11-03 07:44:01 -08:00
sfi
sh
sn
spi
ssb
staging	Staging: fix wireless drivers depends	2009-10-30 14:47:44 -07:00
tc
telephony
thermal
uio	headers: remove sched.h from interrupt.h	2009-10-11 11:20:58 -07:00
usb	USB: fsl_udc_core: Fix kernel oops on module removal	2009-10-30 14:57:33 -07:00
uwb	headers: remove sched.h from interrupt.h	2009-10-11 11:20:58 -07:00
video
virtio	virtio: order used ring after used index read	2009-10-29 08:50:37 +10:30
vlynq
w1
watchdog	watchdog: Fix rio watchdog probe function	2009-10-14 01:18:26 -07:00
xen
zorro
Kconfig
Makefile