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>		2007-07-17 10:23:02 -07:00
..
aty	sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes	2007-07-11 16:09:09 -07:00
backlight	sysfs: kill unnecessary attribute->owner	2007-07-11 16:09:06 -07:00
console	Video Console: Blackfin doesnt support VGA console	2007-07-12 12:07:40 +08:00
display	make drivers/video/display/display-sysfs.c:display_class static	2007-05-08 11:15:26 -07:00
geode
i810	Fix occurrences of "the the "	2007-05-09 08:57:56 +02:00
intelfb	intelfb: fix ring space calculation	2007-05-08 11:15:26 -07:00
kyro	PCI: Change all drivers to use pci_device->revision	2007-07-11 16:02:10 -07:00
logo	Use menuconfig objects II: video/logo	2007-05-08 11:15:33 -07:00
matrox	Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6	2007-07-12 13:40:57 -07:00
mbx
nvidia	nvidiafb: Enable debugging messages a Kconfig option	2007-05-11 08:29:37 -07:00
pnx4008
riva	rivafb: Fix I2C getscl callback function	2007-05-11 08:29:37 -07:00
savage	savagefb: VGA state save and restore	2007-05-08 11:15:29 -07:00
sis	PCI: Change all drivers to use pci_device->revision	2007-07-11 16:02:10 -07:00
vermilion	vmlfb: framebuffer driver for Intel Vermilion Range	2007-05-08 11:15:32 -07:00
68328fb.c
acornfb.c
acornfb.h
amba-clcd.c
amifb.c
arcfb.c	arcfb: use fb_sys_read()	2007-05-08 11:15:30 -07:00
arkfb.c	vt8623fb: arkfb: null pointer dereference fix	2007-06-01 08:18:28 -07:00
asiliantfb.c
atafb_iplan2p2.c	m68k: Atari fb revival	2007-05-04 17:59:05 -07:00
atafb_iplan2p4.c	m68k: Atari fb revival	2007-05-04 17:59:05 -07:00
atafb_iplan2p8.c	m68k: Atari fb revival	2007-05-04 17:59:05 -07:00
atafb_mfb.c	m68k: Atari fb revival	2007-05-04 17:59:05 -07:00
atafb_utils.h	m68k: Atari fb revival	2007-05-04 17:59:05 -07:00
atafb.c	m68k: Atari fb revival	2007-05-04 17:59:05 -07:00
atafb.h	m68k: Atari fb revival	2007-05-04 17:59:05 -07:00
atmel_lcdfb.c	atmel_lcdfb: AT91/AT32 LCD Controller framebuffer driver	2007-05-11 08:29:37 -07:00
au1100fb.c
au1100fb.h
au1200fb.c
au1200fb.h
bt431.h
bt455.h
bw2.c	[BW2]: Fix section mismatch warnings.	2007-03-09 23:11:05 -08:00
c2p.c
c2p.h
cfbcopyarea.c	fbdev: consolidate common drawing functions into a header file	2007-05-08 11:15:30 -07:00
cfbfillrect.c	fbdev: consolidate common drawing functions into a header file	2007-05-08 11:15:30 -07:00
cfbimgblt.c
cg3.c	[SPARC/64] constify of_get_property return: drivers	2007-04-26 01:54:27 -07:00
cg6.c
cg14.c
chipsfb.c	fix section mismatch in chipsfb	2007-06-28 11:34:54 -07:00
cirrusfb.c	cirrusfb: convert to generic boolean	2007-05-08 11:15:28 -07:00
clps711xfb.c
controlfb.c	[POWERPC] Remove old interface find_devices	2007-04-24 22:09:02 +10:00
controlfb.h
cyber2000fb.c
cyber2000fb.h
cyblafb.c
dnfb.c
edid.h
epson1355fb.c	fbdev: pass struct fb_info to fb_read and fb_write	2007-05-08 11:15:30 -07:00
fb_ddc.c
fb_defio.c	fbdev: kill sparse warning in deferred IO	2007-05-08 11:15:29 -07:00
fb_draw.h	fbdev: consolidate common drawing functions into a header file	2007-05-08 11:15:30 -07:00
fb_notify.c
fb_sys_fops.c	fbdev: add fb_read/fb_write functions for framebuffers in system RAM	2007-05-08 11:15:30 -07:00
fbcmap.c
fbcvt.c
fbmem.c	fbdev: add support for AVR32	2007-05-09 12:30:57 -07:00
fbmon.c	fbdev: add Ultrasharp UXGA to broken monitor database	2007-05-08 11:15:26 -07:00
fbsysfs.c	fbdev: fix obvious bug in show_pan()	2007-05-08 11:15:26 -07:00
ffb.c	[VIDEO] ffb: The pseudo_palette is only 16 elements long	2007-06-05 13:14:33 -07:00
fm2fb.c
g364fb.c	PCI: Cleanup the includes of <linux/pci.h>	2007-05-02 19:02:35 -07:00
gbefb.c
gxt4500.c
hecubafb.c	hecubafb: use fb_sys_read()	2007-05-08 11:15:30 -07:00
hgafb.c
hitfb.c
hpfb.c
igafb.c	[IGAFB]: Use pci_device_to_OF_node() on sparc.	2007-04-26 01:55:03 -07:00
imacfb.c
imsttfb.c
imxfb.c	imxfb: fix memory hole	2007-05-23 20:14:13 -07:00
imxfb.h
Kconfig	[POWERPC] PS3: Frame buffer system-bus rework	2007-06-28 19:16:42 +10:00
leo.c
macfb.c
macmodes.c
macmodes.h
Makefile	atmel_lcdfb: AT91/AT32 LCD Controller framebuffer driver	2007-05-11 08:29:37 -07:00
maxinefb.c
modedb.c	VIDEO: add spaces on either side of the case "..." operator	2007-05-08 11:15:28 -07:00
neofb.c	neofb: Fix pseudo_palette array overrun in neofb_setcolreg	2007-05-31 07:48:27 -07:00
offb.c	[POWERPC] Rename device_is_compatible to of_device_is_compatible	2007-05-07 20:31:14 +10:00
output.c
p9100.c
platinumfb.c	PCI: Cleanup the includes of <linux/pci.h>	2007-05-02 19:02:35 -07:00
platinumfb.h
pm2fb.c	pm2fb: RDAC_WR barriers clean up	2007-05-23 20:14:13 -07:00
pm3fb.c	pm3fb: switching between X and fb fix	2007-06-01 08:18:30 -07:00
pmag-aa-fb.c
pmag-ba-fb.c
pmagb-b-fb.c
ps3fb.c	Freezer: make kernel threads nonfreezable by default	2007-07-17 10:23:02 -07:00
pvr2fb.c	fb: pvr2fb: A few more __devinit annotations for PCI.	2007-07-07 04:05:06 +09:00
pxafb.c	VIDEO: add spaces on either side of the case "..." operator	2007-05-08 11:15:28 -07:00
pxafb.h
q40fb.c
s1d13xxxfb.c
s3c2410fb.c
s3c2410fb.h
s3fb.c	svgalib: move fb_get_caps to svgalib	2007-05-09 12:30:57 -07:00
sa1100fb.c
sa1100fb.h
sbuslib.c
sbuslib.h
sgivwfb.c
skeletonfb.c	skeletonfb: fix of xxxfb_setup ifdef	2007-06-01 08:18:28 -07:00
sm501fb.c	sm501fb printk warning fixes	2007-05-08 11:15:34 -07:00
sstfb.c	PCI: Change all drivers to use pci_device->revision	2007-07-11 16:02:10 -07:00
sticore.h
stifb.c	PCI: Cleanup the includes of <linux/pci.h>	2007-05-02 19:02:35 -07:00
sunxvr500.c	[VIDEO] sunxvr500fb: Fix pseudo_palette array size	2007-06-05 13:15:26 -07:00
sunxvr2500.c	[VIDEO] sunxvr2500fb: Fix pseudo_palette array size	2007-06-05 13:15:01 -07:00
svgalib.c	svgalib: move fb_get_caps to svgalib	2007-05-09 12:30:57 -07:00
syscopyarea.c	fbdev: consolidate common drawing functions into a header file	2007-05-08 11:15:30 -07:00
sysfillrect.c	fbdev: consolidate common drawing functions into a header file	2007-05-08 11:15:30 -07:00
sysimgblt.c	fbdev: add drawing functions for framebuffers in system RAM	2007-05-08 11:15:30 -07:00
tcx.c
tdfxfb.c
tgafb.c	PCI: Change all drivers to use pci_device->revision	2007-07-11 16:02:10 -07:00
tridentfb.c
tx3912fb.c
valkyriefb.c	PCI: Cleanup the includes of <linux/pci.h>	2007-05-02 19:02:35 -07:00
valkyriefb.h
vesafb.c
vfb.c	vfb: use fb_sys_read() and fb_sys_write()	2007-05-08 11:15:30 -07:00
vga16fb.c	vga16fb: actually support widths in multiples of 8	2007-05-08 11:15:33 -07:00
vgastate.c	vga: vgastate fix	2007-05-08 11:15:32 -07:00
vt8623fb.c	vt8623fb: arkfb: null pointer dereference fix	2007-06-01 08:18:28 -07:00
w100fb.c	w100fb: fix compile warnings	2007-05-23 20:14:13 -07:00
w100fb.h
xilinxfb.c	xilinxfb: xilinx framebuffer device driver	2007-05-08 11:15:34 -07:00