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Rafael J. Wysocki 8314418629 Freezer: make kernel threads nonfreezable by default ... Currently, the freezer treats all tasks as freezable, except for the kernel threads that explicitly set the PF_NOFREEZE flag for themselves. This approach is problematic, since it requires every kernel thread to either set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't care for the freezing of tasks at all. It seems better to only require the kernel threads that want to or need to be frozen to use some freezer-related code and to remove any freezer-related code from the other (nonfreezable) kernel threads, which is done in this patch. The patch causes all kernel threads to be nonfreezable by default (ie. to have PF_NOFREEZE set by default) and introduces the set_freezable() function that should be called by the freezable kernel threads in order to unset PF_NOFREEZE. It also makes all of the currently freezable kernel threads call set_freezable(), so it shouldn't cause any (intentional) change of behaviour to appear. Additionally, it updates documentation to describe the freezing of tasks more accurately. [akpm@linux-foundation.org: build fixes] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net> Cc: Pavel Machek <pavel@ucw.cz> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		18 years ago
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bt8xx	V4L/DVB (5808): Bttv: fix v4l1 breaking the driver	18 years ago
cpia2	[PATCH] mark struct file_operations const 4	18 years ago
cx88	Freezer: make kernel threads nonfreezable by default	18 years ago
cx25840	V4L/DVB (5576): Improve / fix support for PAL-60 in cx25840	18 years ago
em28xx	V4L/DVB (5640): Fix: em28xx shouldn't be selecting VIDEO_BUF	18 years ago
et61x251	V4L/DVB (5586): Use menuconfig objects II - V4L	18 years ago
ivtv	V4L/DVB (5751): Ivtv: fix ia64 printk format warnings.	18 years ago
ovcamchip	i2c: Cleanup the includes of <linux/i2c.h>	18 years ago
pvrusb2	V4L/DVB (5586): Use menuconfig objects II - V4L	18 years ago
pwc	Merge branch 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb	18 years ago
saa7134	saa7134: fix thread shutdown handling	18 years ago
sn9c102	V4L/DVB (5586): Use menuconfig objects II - V4L	18 years ago
usbvideo	Merge branch 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb	18 years ago
usbvision	V4L/DVB (5720): Usbvision: fix urb allocation and submits	18 years ago
zc0301	V4L/DVB (5586): Use menuconfig objects II - V4L	18 years ago
Kconfig	Fix Kconfig dependency problems wrt boolean menuconfigs	18 years ago
Makefile	V4L/DVB (5345): ivtv driver for Conexant cx23416/cx23415 MPEG encoder/decoder	18 years ago
adv7170.c	PCI: Cleanup the includes of <linux/pci.h>	18 years ago
adv7175.c	PCI: Cleanup the includes of <linux/pci.h>	18 years ago
arv.c	[PATCH] mark struct file_operations const 4	18 years ago
bt819.c	PCI: Cleanup the includes of <linux/pci.h>	18 years ago
bt856.c	PCI: Cleanup the includes of <linux/pci.h>	18 years ago
bt866.c	PCI: Cleanup the includes of <linux/pci.h>	18 years ago
btcx-risc.c	…
btcx-risc.h	…
bw-qcam.c	[PATCH] mark struct file_operations const 4	18 years ago
bw-qcam.h	…
c-qcam.c	[PATCH] mark struct file_operations const 4	18 years ago
cafe_ccic-regs.h	V4L/DVB (5690): Cafe_ccic: Properly power down the sensor	18 years ago
cafe_ccic.c	V4L/DVB (5690): Cafe_ccic: Properly power down the sensor	18 years ago
compat_ioctl32.c	[PATCH] struct path: convert v4l	18 years ago
cpia.c	V4L/DVB (5076): Cpia.c: buffer overflow	18 years ago
cpia.h	header cleaning: don't include smp_lock.h when not used	18 years ago
cpia_pp.c	header cleaning: don't include smp_lock.h when not used	18 years ago
cpia_usb.c	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	19 years ago
cs53l32a.c	V4L/DVB (5355): Add VIDIOC_G_CHIP_IDENT to various i2c modules	18 years ago
cs8420.h	…
cx2341x.c	i2c: Cleanup the includes of <linux/i2c.h>	18 years ago
dabfirmware.h	…
dabusb.c	header cleaning: don't include smp_lock.h when not used	18 years ago
dabusb.h	…
dpc7146.c	…
font.h	…
hexium_gemini.c	…
hexium_orion.c	…
ibmmpeg2.h	…
indycam.c	[PATCH] remove many unneeded #includes of sched.h	18 years ago
indycam.h	…
ir-kbd-i2c.c	V4L/DVB (5479): Use ARRAY_SIZE instead of a magic number	18 years ago
ks0127.c	V4L/DVB (5029): Ks0127 status flags	18 years ago
ks0127.h	…
meye.c	PCI: Change all drivers to use pci_device->revision	18 years ago
meye.h	meye: make meye use sony-laptop instead of sonypi	18 years ago
msp3400-driver.c	V4L/DVB (5355): Add VIDIOC_G_CHIP_IDENT to various i2c modules	18 years ago
msp3400-driver.h	V4L/DVB (5355): Add VIDIOC_G_CHIP_IDENT to various i2c modules	18 years ago
msp3400-kthreads.c	Freezer: make kernel threads nonfreezable by default	18 years ago
mt20xx.c	…
mxb.c	V4L/DVB (4894): Mxb: fix to load the proper i2c modules	18 years ago
mxb.h	…
ov511.c	[PATCH] mark struct file_operations const 4	18 years ago
ov511.h	header cleaning: don't include smp_lock.h when not used	18 years ago
ov7670.c	V4L/DVB (5691): Ov7670: reset clkrc in rgb565 mode	18 years ago
planb.c	Merge branch 'linux-2.6' into for-2.6.22	18 years ago
planb.h	V4L/DVB (5551): Plan-b: header change	18 years ago
pms.c	[PATCH] remove many unneeded #includes of sched.h	18 years ago
saa711x.c	PCI: Cleanup the includes of <linux/pci.h>	18 years ago
saa711x_regs.h	…
saa5246a.c	V4L/DVB (5197): Convert to generic boolean-values	18 years ago
saa5246a.h	V4L/DVB (5197): Convert to generic boolean-values	18 years ago
saa5249.c	V4L/DVB (5197): Convert to generic boolean-values	18 years ago
saa6588.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6	18 years ago
saa7110.c	…
saa7111.c	V4L/DVB (5700): Saa7111: fix picture settings cache bug	18 years ago
saa7114.c	PCI: Cleanup the includes of <linux/pci.h>	18 years ago
saa7115.c	V4L/DVB (5414): Add missing kfree in early exit of saa7115.	18 years ago
saa7121.h	…
saa7127.c	V4L/DVB (5306): Add support for VIDIOC_G_CHIP_IDENT	18 years ago
saa7146.h	…
saa7146reg.h	…
saa7185.c	PCI: Cleanup the includes of <linux/pci.h>	18 years ago
saa7191.c	[PATCH] remove many unneeded #includes of sched.h	18 years ago
saa7191.h	…
saa7196.h	…
se401.c	V4L/DVB (5490): Drivers/media/video/se401.c: check kmalloc() return value.	18 years ago
se401.h	header cleaning: don't include smp_lock.h when not used	18 years ago
stradis.c	[PATCH] mark struct file_operations const 4	18 years ago
stv680.c	[PATCH] mark struct file_operations const 4	18 years ago
stv680.h	…
tda7432.c	V4L/DVB (5492): Remove useless includes of i2c-algo-bit.h	18 years ago
tda8290.c	V4L/DVB (5484): Set tda8290 to analog mode after init	18 years ago
tda9840.c	…
tda9840.h	…
tda9875.c	V4L/DVB (5492): Remove useless includes of i2c-algo-bit.h	18 years ago
tda9887.c	V4L/DVB (4934): Usbvision radio requires GainNormal at e register	18 years ago
tea5767.c	…
tea6415c.c	…
tea6415c.h	…
tea6420.c	…
tea6420.h	…
tlv320aic23b.c	…
tuner-3036.c	…
tuner-core.c	V4L/DVB (5326): Allow to set tuner_config in attach inform	18 years ago
tuner-simple.c	V4L/DVB (5680): Tuner-simple.c fix suport for SECAM with FI1216MF	18 years ago
tuner-types.c	V4L/DVB (4936): Make MT4049FM5 tuner to set FM Gain to Normal	18 years ago
tvaudio.c	Freezer: make kernel threads nonfreezable by default	18 years ago
tveeprom.c	V4L/DVB (5434): Updates to the tveeprom tuner, video decoder and audio chip	18 years ago
tvmixer.c	V4L/DVB (5028): Tvmixer module_put cleanup	18 years ago
tvp5150.c	V4L/DVB (5304): Improve chip matching in v4l2_register	18 years ago
tvp5150_reg.h	…
upd64031a.c	V4L/DVB (5355): Add VIDIOC_G_CHIP_IDENT to various i2c modules	18 years ago
upd64083.c	V4L/DVB (5355): Add VIDIOC_G_CHIP_IDENT to various i2c modules	18 years ago
v4l1-compat.c	V4L/DVB (5571): V4l1-compat: Make VIDIOCSPICT return errors in a useful way	18 years ago
v4l2-common.c	header cleaning: don't include smp_lock.h when not used	18 years ago
video-buf-dvb.c	Freezer: make kernel threads nonfreezable by default	18 years ago
video-buf.c	V4L/DVB (5603): V4L: Prevent queueing queued buffers.	18 years ago
videocodec.c	V4L/DVB (5489): Codec.c: check kmalloc() return value.	18 years ago
videocodec.h	…
videodev.c	V4L/DVB (5617): V4L2: videodev, allow debugging	18 years ago
vino.c	[PATCH] mark struct file_operations const 4	18 years ago
vino.h	…
vivi.c	Freezer: make kernel threads nonfreezable by default	18 years ago
vpx3220.c	…
w9966.c	[PATCH] mark struct file_operations const 4	18 years ago
w9968cf.c	i2c: Declare more i2c_adapter parent devices	18 years ago
w9968cf.h	…
w9968cf_decoder.h	…
w9968cf_vpp.h	…
wm8739.c	V4L/DVB (5355): Add VIDIOC_G_CHIP_IDENT to various i2c modules	18 years ago
wm8775.c	V4L/DVB (5355): Add VIDIOC_G_CHIP_IDENT to various i2c modules	18 years ago
zoran.h	…
zoran_card.c	i2c: Declare more i2c_adapter parent devices	18 years ago
zoran_card.h	…
zoran_device.c	V4L/DVB (4964): VIDEO_PALETTE_YUYV and VIDEO_PALETTE_YUV422 are the same palette	18 years ago
zoran_device.h	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	19 years ago
zoran_driver.c	Clean up mutex_trylock noise	18 years ago
zoran_procfs.c	[PATCH] mark struct file_operations const 4	18 years ago
zoran_procfs.h	…
zr364xx.c	V4L/DVB (5392): Zr364xx: Use kernel's byte-swapping function	18 years ago
zr36016.c	…
zr36016.h	…
zr36050.c	…
zr36050.h	…
zr36057.h	…
zr36060.c	…
zr36060.h	…