Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
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
..
irq	Improve behaviour of spurious IRQ detect	2007-07-16 09:05:46 -07:00
power	PM: introduce set_target method in pm_ops	2007-07-01 12:29:44 -07:00
time	Remove capability.h from mm.h	2007-07-16 09:05:45 -07:00
.gitignore
acct.c
audit.c	Freezer: make kernel threads nonfreezable by default	2007-07-17 10:23:02 -07:00
audit.h	Audit: add TTY input auditing	2007-07-16 09:05:47 -07:00
auditfilter.c	audit: fix oops removing watch if audit disabled	2007-06-24 08:59:12 -07:00
auditsc.c	kerneldoc fix in audit_core_dumps	2007-07-16 09:05:48 -07:00
capability.c
compat.c	signal/timer/event: timerfd compat code	2007-05-11 08:29:36 -07:00
configs.c	use simple_read_from_buffer in kernel/	2007-05-09 12:30:49 -07:00
cpu.c	microcode: use suspend-related CPU hotplug notifications	2007-05-09 12:30:56 -07:00
cpuset.c	Reduce cpuset.c write_lock_irq() to read_lock()	2007-07-16 09:05:43 -07:00
delayacct.c	sched: update delay-accounting to use CFS's precise stats	2007-07-09 18:52:00 +02:00
die_notifier.c	move die notifier handling to common code	2007-05-08 11:15:04 -07:00
dma.c
exec_domain.c
exit.c	Freezer: make kernel threads nonfreezable by default	2007-07-17 10:23:02 -07:00
extable.c
fork.c	Freezer: make kernel threads nonfreezable by default	2007-07-17 10:23:02 -07:00
futex.c	FUTEX: Tidy up the code	2007-07-16 09:05:49 -07:00
futex_compat.c	Revert "futex_requeue_pi optimization"	2007-06-18 09:48:41 -07:00
hrtimer.c	[HRTIMER] Fix cpu pointer arg to clockevents_notify()	2007-07-16 17:29:56 -07:00
itimer.c	The scheduled -EINVAL for invalid timevals in setitimer	2007-05-08 11:15:13 -07:00
kallsyms.c	sprint_symbol() cleanup	2007-07-16 09:05:50 -07:00
Kconfig.hz
Kconfig.preempt	Fix trivial typos in Kconfig* files	2007-05-09 07:12:20 +02:00
kexec.c	kdump/kexec: calculate note size at compile time	2007-05-08 11:15:07 -07:00
kfifo.c	is_power_of_2: kernel/kfifo.c	2007-07-16 09:05:50 -07:00
kmod.c	wait_for_helper: remove unneeded do_sigaction()	2007-05-09 12:30:53 -07:00
kprobes.c	Kprobes: The ON/OFF knob thru debugfs	2007-05-08 11:15:19 -07:00
ksysfs.c	remove "struct subsystem" as it is no longer needed	2007-05-02 18:57:59 -07:00
kthread.c	mm: fix improper .init-type section references	2007-07-16 09:05:36 -07:00
latency.c
lockdep.c	lockdep: removed unused ip argument in mark_lock & mark_held_locks	2007-05-08 11:15:13 -07:00
lockdep_internals.h
lockdep_proc.c
Makefile	user namespace: add the framework	2007-07-16 09:05:47 -07:00
module.c	modules: remove modlist_lock	2007-07-16 09:05:51 -07:00
mutex-debug.c
mutex-debug.h
mutex.c	wrap access to thread_info	2007-05-09 12:30:56 -07:00
mutex.h
nsproxy.c	namespace: ensure clone_flags are always stored in an unsigned long	2007-07-16 09:05:48 -07:00
panic.c
params.c	sysfs: kill unnecessary attribute->owner	2007-07-11 16:09:06 -07:00
pid.c	namespace: ensure clone_flags are always stored in an unsigned long	2007-07-16 09:05:48 -07:00
posix-cpu-timers.c	sched: make posix-cpu-timers use CFS's accounting information	2007-07-09 18:51:58 +02:00
posix-timers.c	posix-timers: Prevent softirq starvation by small intervals and SIG_IGN	2007-06-21 15:57:04 -07:00
printk.c	kernel/printk.c: document possible deadlock against scheduler	2007-07-16 09:05:52 -07:00
profile.c	Detach sched.h from mm.h	2007-05-21 09:18:19 -07:00
ptrace.c	Use write_trylock_irqsave in ptrace_attach	2007-07-16 09:05:40 -07:00
rcupdate.c	Add suspend-related notifications for CPU hotplug	2007-05-09 12:30:56 -07:00
rcutorture.c	Freezer: make kernel threads nonfreezable by default	2007-07-17 10:23:02 -07:00
relay.c	relay: fixup kerneldoc comment	2007-07-13 14:14:28 +02:00
resource.c	libata/IDE: remove combined mode quirk	2007-04-28 14:15:59 -04:00
rtmutex-debug.c	FUTEX: Tidy up the code	2007-07-16 09:05:49 -07:00
rtmutex-debug.h
rtmutex-tester.c	Freezer: make kernel threads nonfreezable by default	2007-07-17 10:23:02 -07:00
rtmutex.c	FUTEX: Tidy up the code	2007-07-16 09:05:49 -07:00
rtmutex.h
rtmutex_common.h	FUTEX: Tidy up the code	2007-07-16 09:05:49 -07:00
rwsem.c	Lockdep treats down_write_trylock like regular down_write	2007-05-08 11:15:09 -07:00
sched.c	Freezer: make kernel threads nonfreezable by default	2007-07-17 10:23:02 -07:00
sched_debug.c	[PATCH] sched: remove stale version info from kernel/sched_debug.c	2007-07-13 10:10:41 -07:00
sched_fair.c	sched: cfs core, kernel/sched_fair.c	2007-07-09 18:51:58 +02:00
sched_idletask.c	sched: cfs core, kernel/sched_idletask.c	2007-07-09 18:51:58 +02:00
sched_rt.c	sched: cfs core, kernel/sched_rt.c	2007-07-09 18:51:58 +02:00
sched_stats.h	sched: update delay-accounting to use CFS's precise stats	2007-07-09 18:52:00 +02:00
seccomp.c	make seccomp zerocost in schedule	2007-07-16 09:05:50 -07:00
signal.c	vdso: print fatal signals	2007-07-16 09:05:43 -07:00
softirq.c	Freezer: make kernel threads nonfreezable by default	2007-07-17 10:23:02 -07:00
softlockup.c	Freezer: make kernel threads nonfreezable by default	2007-07-17 10:23:02 -07:00
spinlock.c
srcu.c
stacktrace.c
stop_machine.c	Fix stop_machine_run problem with naughty real time process	2007-07-16 09:05:41 -07:00
sys.c	move seccomp from /proc to a prctl	2007-07-16 09:05:50 -07:00
sys_ni.c	diskquota: 32bit quota tools on 64bit architectures	2007-07-16 09:05:48 -07:00
sysctl.c	Allow huge page allocations to use GFP_HIGH_MOVABLE	2007-07-17 10:22:59 -07:00
taskstats.c	taskstats: add context-switch counters	2007-07-16 09:05:46 -07:00
time.c	sys_time() speedup	2007-07-16 09:05:48 -07:00
timer.c	Slab allocators: Replace explicit zeroing with __GFP_ZERO	2007-07-17 10:23:02 -07:00
tsacct.c
uid16.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
user.c	user namespace: add the framework	2007-07-16 09:05:47 -07:00
user_namespace.c	fix create_new_namespaces() return value	2007-07-16 09:05:47 -07:00
utsname.c	namespace: ensure clone_flags are always stored in an unsigned long	2007-07-16 09:05:48 -07:00
utsname_sysctl.c	remove CONFIG_UTS_NS and CONFIG_IPC_NS	2007-07-16 09:05:47 -07:00
wait.c	Fix occurrences of "the the "	2007-05-09 08:57:56 +02:00
workqueue.c	Freezer: make kernel threads nonfreezable by default	2007-07-17 10:23:02 -07:00