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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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agp	Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart	18 years ago
drm	drm: add idr_init to drm_stub.c	18 years ago
hw_random	intel-rng: undo mess made by an 80 column extremist	18 years ago
ip2	Char: ip2, use msleep for sleeping	18 years ago
ipmi	drivers/char/ipmi/ipmi_si_intf.c: lower printk severity	18 years ago
mwave	[PATCH] mwave: interesting flags savings	18 years ago
pcmcia	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial	18 years ago
rio	Overrun in drivers/char/rio/riocmd.c	18 years ago
tpm	Use menuconfig objects II - TPM	18 years ago
watchdog	Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog	18 years ago
.gitignore	…
ChangeLog	…
Kconfig	undeprecate raw driver	18 years ago
Makefile	Audit: add TTY input auditing	18 years ago
amiserial.c	amiserial: remove incorrect 'no termios change' check	18 years ago
apm-emulation.c	Freezer: make kernel threads nonfreezable by default	18 years ago
applicom.c	…
applicom.h	…
briq_panel.c	[POWERPC] Remove dead code for preventing pread() and pwrite() calls	18 years ago
cd1865.h	…
consolemap.c	Kernel utf-8 handling	18 years ago
cp437.uni	…
cs5535_gpio.c	Char: cs5535_gpio, add MODULE_DEVICE_TABLE	18 years ago
cyclades.c	serial: remove termios checks from various old char serial drivers	18 years ago
decserial.c	…
defkeymap.c_shipped	…
defkeymap.map	…
digi1.h	…
digiFep1.h	…
digiPCI.h	…
ds1286.c	[CHAR] ds1286: Fix handling of seconds in RTC_ALM_SET ioctl.	18 years ago
ds1302.c	[PATCH] DS1302: local_irq_disable() is redundant after local_irq_save()	18 years ago
ds1620.c	header cleaning: don't include smp_lock.h when not used	18 years ago
dsp56k.c	header cleaning: don't include smp_lock.h when not used	18 years ago
dtlk.c	dtlk: fix error checks in module_init()	18 years ago
ec3104_keyb.c	header cleaning: don't include smp_lock.h when not used	18 years ago
efirtc.c	…
epca.c	drivers/char: use __set_current_state()	18 years ago
epca.h	…
epcaconfig.h	…
esp.c	serial: remove termios checks from various old char serial drivers	18 years ago
generic_nvram.c	[PATCH] mark struct file_operations const 3	18 years ago
generic_serial.c	genericserial: remove bogus optimisation check and dead code paths	18 years ago
genrtc.c	Char: genrtc, use wait_event_interruptible	18 years ago
hangcheck-timer.c	Detach sched.h from mm.h	18 years ago
hpet.c	[PATCH] sysctl: remove insert_at_head from register_sysctl	18 years ago
hvc_beat.c	[POWERPC] Celleb: hypervisor console driver	18 years ago
hvc_console.c	Freezer: make kernel threads nonfreezable by default	18 years ago
hvc_console.h	…
hvc_iseries.c	[POWERPC] Rename device_is_compatible to of_device_is_compatible	18 years ago
hvc_rtas.c	…
hvc_vio.c	[POWERPC] Rename device_is_compatible to of_device_is_compatible	18 years ago
hvcs.c	…
hvsi.c	[POWERPC] Rename get_property to of_get_property: partial drivers	18 years ago
i8k.c	i386: sched.h inclusion from module.h is baack	18 years ago
ip27-rtc.c	header cleaning: don't include smp_lock.h when not used	18 years ago
isicom.c	Char: isicom, use pr_debug	18 years ago
istallion.c	serial: remove termios checks from various old char serial drivers	18 years ago
keyboard.c	Kernel utf-8 handling	18 years ago
lcd.c	[CHAR] lcd: Fix two warnings.	18 years ago
lcd.h	[MIPS] Add MTD device support for Cobalt	18 years ago
lp.c	ROUND_UP macro cleanup in drivers/char/lp.c	18 years ago
mbcs.c	[PATCH] mark struct file_operations const 3	18 years ago
mbcs.h	…
mem.c	Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus	18 years ago
misc.c	Make /proc/misc use seq_list_xxx helpers	18 years ago
mmtimer.c	[IA64-SN2][KJ] mmtimer.c-kzalloc	18 years ago
moxa.c	old buffer overflow in moxa driver	18 years ago
mspec.c	mspec_mmap: don't set VM_LOCKED	18 years ago
mxser.c	serial: remove termios checks from various old char serial drivers	18 years ago
mxser.h	[PATCH] mxser: remove ambiguous redefinition of INIT_WORK	18 years ago
mxser_new.c	serial: remove termios checks from various old char serial drivers	18 years ago
mxser_new.h	[PATCH] Char: mxser_new, upgrade to 1.9.15	18 years ago
n_hdlc.c	Char: n_hdlc, allow RESTARTSYS retval of tty write	18 years ago
n_r3964.c	Char: n_r3964, use wait_event_interruptible	18 years ago
n_tty.c	Audit: add TTY input auditing	18 years ago
nsc_gpio.c	…
nvram.c	COBALT: remove all references to Cobalt NVRAM	18 years ago
nwbutton.c	[PATCH] Char: timers cleanup	18 years ago
nwbutton.h	…
nwflash.c	[PATCH] remove many unneeded #includes of sched.h	18 years ago
pc8736x_gpio.c	…
ppdev.c	header cleaning: don't include smp_lock.h when not used	18 years ago
pty.c	[PATCH] remove many unneeded #includes of sched.h	18 years ago
random.c	random: fix output buffer folding	18 years ago
raw.c	[PATCH] raw: don't allow the creation of a raw device with minor number 0	18 years ago
riscom8.c	drivers/char: use __set_current_state()	18 years ago
riscom8.h	…
riscom8_reg.h	…
rocket.c	rocket.c: fix unchecked mutex_lock_interruptible()	18 years ago
rocket.h	…
rocket_int.h	Kill unused sesssion and group values in rocket driver	18 years ago
rtc.c	RTC: Ratelimit "lost interrupts" message	18 years ago
scc.h	…
scx200_gpio.c	…
selection.c	Kernel utf-8 handling	18 years ago
ser_a2232.c	[PATCH] remove many unneeded #includes of sched.h	18 years ago
ser_a2232.h	…
ser_a2232fw.ax	…
ser_a2232fw.h	…
serial167.c	drivers/char: use __set_current_state()	18 years ago
snsc.c	…
snsc.h	…
snsc_event.c	[IA64] drivers/char/snsc_event.c:206: warning: unused variable `p'	18 years ago
sonypi.c	remove sonypi_camera_command()	18 years ago
specialix.c	[PATCH] Char: timers cleanup	18 years ago
specialix_io8.h	…
stallion.c	Char: stallion, fix oops during init with ISA cards	18 years ago
sx.c	sx: switch subven and subid values	18 years ago
sx.h	…
sxboards.h	…
sxwindow.h	…
synclink.c	synclink: remove bogus 'no change' termios optimisation from synclink drivers	18 years ago
synclink_gt.c	synclink: remove bogus 'no change' termios optimisation from synclink drivers	18 years ago
synclinkmp.c	synclink: remove bogus 'no change' termios optimisation from synclink drivers	18 years ago
sysrq.c	header cleaning: don't include smp_lock.h when not used	18 years ago
tb0219.c	…
tipar.c	layered parport code uses parport->dev	18 years ago
tlclk.c	[PATCH] remove many unneeded #includes of sched.h	18 years ago
toshiba.c	[PATCH] remove many unneeded #includes of sched.h	18 years ago
tty_audit.c	Audit: add TTY input auditing	18 years ago
tty_io.c	Audit: add TTY input auditing	18 years ago
tty_ioctl.c	Char: tty_ioctl, little whitespace cleanup	18 years ago
vc_screen.c	use mutex instead of semaphore in virtual console driver	18 years ago
viocons.c	…
viotape.c	[POWERPC] VIOTAPE: Use designated initializers for fops member structures.	18 years ago
vme_scc.c	[PATCH] remove many unneeded #includes of sched.h	18 years ago
vr41xx_giu.c	[MIPS] Separate platform_device registration for VR41xx GPIO	18 years ago
vt.c	console UTF-8 fixes (fix)	18 years ago
vt_ioctl.c	drivers/char: use __set_current_state()	18 years ago