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Matt Helsley 83224b0837 container freezer: add TIF_FREEZE flag to all architectures 
This patch series introduces a cgroup subsystem that utilizes the swsusp
freezer to freeze a group of tasks.  It's immediately useful for batch job
management scripts.  It should also be useful in the future for
implementing container checkpoint/restart.

The freezer subsystem in the container filesystem defines a cgroup file
named freezer.state.  Reading freezer.state will return the current state
of the cgroup.  Writing "FROZEN" to the state file will freeze all tasks
in the cgroup.  Subsequently writing "RUNNING" will unfreeze the tasks in
the cgroup.

* Examples of usage :

   # mkdir /containers/freezer
   # mount -t cgroup -ofreezer freezer  /containers
   # mkdir /containers/0
   # echo $some_pid > /containers/0/tasks

to get status of the freezer subsystem :

   # cat /containers/0/freezer.state
   RUNNING

to freeze all tasks in the container :

   # echo FROZEN > /containers/0/freezer.state
   # cat /containers/0/freezer.state
   FREEZING
   # cat /containers/0/freezer.state
   FROZEN

to unfreeze all tasks in the container :

   # echo RUNNING > /containers/0/freezer.state
   # cat /containers/0/freezer.state
   RUNNING

This patch:

The first step in making the refrigerator() available to all
architectures, even for those without power management.

The purpose of such a change is to be able to use the refrigerator() in a
new control group subsystem which will implement a control group freezer.

[akpm@linux-foundation.org: fix sparc]
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Signed-off-by: Matt Helsley <matthltc@us.ibm.com>
Acked-by: Pavel Machek <pavel@suse.cz>
Acked-by: Serge E. Hallyn <serue@us.ibm.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Nigel Cunningham <nigel@tuxonice.net>
Tested-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2008-10-20 08:52:33 -07:00
..
Kbuild [PARISC] Export pdc.h for palo 2007-10-18 00:58:29 -07:00
agp.h x86: remove flush_agp_mappings() 2008-01-30 13:34:07 +01:00
asmregs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
assembly.h parisc: use conditional macro for 64-bit wide ops 2008-05-15 11:03:43 -04:00
atomic.h Add cmpxchg_local to parisc 2008-02-07 08:42:32 -08:00
auxvec.h [PATCH] auxiliary vector cleanups 2005-09-07 16:57:21 -07:00
bitops.h generic: implement __fls on all 64-bit archs 2008-04-26 19:21:16 +02:00
bug.h Fix WARN_ON() on bitfield ops for all other archs 2007-08-01 20:45:38 -07:00
bugs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
byteorder.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cache.h [PARISC] Clean up the cache and tlb headers 2007-02-17 00:41:30 -05:00
cacheflush.h mm: spinlock tree_lock 2008-07-26 12:00:06 -07:00
checksum.h parisc: fix miscompilation of ip_fast_csum with gcc >= 4.3 2008-06-13 10:49:56 -04:00
compat.h asm-*/compat.h: fix typo in comment 2008-02-03 16:32:51 +02:00
compat_rt_sigframe.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
compat_signal.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
compat_ucontext.h [PARISC] Arch-specific compat signals 2006-01-22 20:57:42 -05:00
cputime.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
current.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
delay.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
device.h Driver core: add dev_archdata to struct device 2006-12-01 14:52:01 -08:00
div64.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dma-mapping.h dma-mapping: add the device argument to dma_mapping_error() 2008-07-26 12:00:03 -07:00
dma.h Fix misc .c/.h comment typos 2006-11-30 05:24:39 +01:00
eisa_bus.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
eisa_eeprom.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
elf.h [PATCH] remove unused ibcs2/PER_SVR4 in SET_PERSONALITY 2008-10-16 15:40:05 +02:00
emergency-restart.h [PATCH] Add emergency_restart() 2005-07-26 14:35:41 -07:00
errno.h [PARISC] Add ECANCELED to errno.h 2005-10-21 22:53:43 -04:00
fb.h fbdev: detect primary display device 2007-07-17 10:23:11 -07:00
fcntl.h Introduce O_CLOEXEC 2007-07-16 09:05:45 -07:00
fixmap.h [PARISC] move VMALLOC_* definitions to fixmap.h 2008-03-15 19:11:49 -07:00
floppy.h cleanup floppy.h 2007-10-17 08:42:55 -07:00
futex.h asm-*/futex.h should include linux/uaccess.h 2008-04-30 08:29:52 -07:00
grfioctl.h [PARISC] Use kzalloc and other janitor-style cleanups 2006-01-22 20:26:31 -05:00
hardirq.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hardware.h [PARISC] fix section mismatches in arch/parisc/kernel 2007-05-27 13:36:27 -04:00
hw_irq.h [PATCH] genirq: add ->retrigger() irq op to consolidate hw_irq_resend() 2006-06-29 10:26:23 -07:00
ide.h ide: define MAX_HWIFS in <linux/ide.h> 2008-07-24 22:53:30 +02:00
io.h [PARISC] parisc: "extern inline" -> "static inline" 2007-10-18 00:58:41 -07:00
ioctl.h parisc: Remove ioctl.h content picked up from <asm-generic/ioctl.h>. 2008-05-15 11:03:34 -04:00
ioctls.h parisc: new termios definitions 2008-05-15 10:38:54 -04:00
ipcbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irq.h [PARISC] Allow nested interrupts 2006-10-04 06:48:57 -06:00
irq_regs.h Build fixes for struct pt_regs removal 2006-10-06 20:47:23 -06:00
kdebug.h move die notifier handling to common code 2007-05-08 11:15:04 -07:00
kmap_types.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
led.h [PARISC] Convert soft power switch driver to kthread 2007-02-17 01:03:43 -05:00
linkage.h include/asm-parisc/: Spelling fixes 2008-02-03 17:00:11 +02:00
local.h local_t: parisc cleanup 2007-05-08 11:15:20 -07:00
machdep.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mc146818rtc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mckinley.h [PARISC] Add asm-parisc/mckinley.h bus header 2006-10-04 06:45:48 -06:00
mman.h [PATCH] Remove final references to deprecated "MAP_ANON" page protection flag 2007-02-11 10:51:17 -08:00
mmu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mmu_context.h Detach sched.h from mm.h 2007-05-21 09:18:19 -07:00
mmzone.h [PARISC] convert to use CONFIG_64BIT instead of __LP64__ 2007-02-17 01:17:13 -05:00
module.h [PARISC] convert to use CONFIG_64BIT instead of __LP64__ 2007-02-17 01:17:13 -05:00
msgbuf.h [PARISC] convert to use CONFIG_64BIT instead of __LP64__ 2007-02-17 01:17:13 -05:00
mutex.h [PATCH] mutex subsystem, add default include/asm-*/mutex.h files 2006-01-09 15:59:19 -08:00
page.h PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures 2008-07-24 10:47:21 -07:00
param.h [PARISC] Use CONFIG_HZ to determine interval timer rate (aka clock ticks) 2006-10-04 06:47:46 -06:00
parisc-device.h [PARISC] convert to use CONFIG_64BIT instead of __LP64__ 2007-02-17 01:17:13 -05:00
parport.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci.h [PARISC] parisc: "extern inline" -> "static inline" 2007-10-18 00:58:41 -07:00
pdc.h [PARISC] pdc_console: fix bizarre panic on boot 2008-03-15 19:12:03 -07:00
pdc_chassis.h [PARISC] Clarify pdc_stable license terms 2006-03-30 17:48:41 +00:00
pdcpat.h [PARISC] Remove duplicate PDC_PAT_CELL defines 2006-12-08 00:34:47 -05:00
percpu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
perf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pgalloc.h [PARISC] unbreak pgalloc.h 2008-03-15 19:11:52 -07:00
pgtable.h mm: introduce pte_special pte bit 2008-04-28 08:58:23 -07:00
poll.h Consolidate asm/poll.h 2007-05-11 08:29:34 -07:00
posix_types.h asm-*/posix_types.h: scrub __GLIBC__ 2008-02-08 09:22:34 -08:00
prefetch.h [PARISC] parisc: "extern inline" -> "static inline" 2007-10-18 00:58:41 -07:00
processor.h aout: move STACK_TOP[_MAX] to asm/processor.h 2008-02-08 09:22:29 -08:00
psw.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
ptrace.h include/asm/ptrace.h userspace headers cleanup 2008-07-25 10:53:39 -07:00
real.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
resource.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ropes.h Fix misc .c/.h comment typos 2006-11-30 05:24:39 +01:00
rt_sigframe.h [PARISC] Arch-specific compat signals 2006-01-22 20:57:42 -05:00
rtc.h [PARISC] fix uninitialized variable warning in asm/rtc.h 2007-10-20 13:23:00 -07:00
runway.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
scatterlist.h parisc: fix sg_page() fallout 2007-10-23 09:49:31 +02:00
sections.h lib: Correct printk %pF to work on all architectures 2008-09-09 11:51:15 -07:00
segment.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sembuf.h [PARISC] convert to use CONFIG_64BIT instead of __LP64__ 2007-02-17 01:17:13 -05:00
serial.h [PARISC] Clean up asm-parisc/serial.h 2006-10-04 06:47:03 -06:00
setup.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
shmbuf.h [PARISC] convert to use CONFIG_64BIT instead of __LP64__ 2007-02-17 01:17:13 -05:00
shmparam.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sigcontext.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
siginfo.h signals: demultiplexing SIGTRAP signal 2008-09-23 13:26:52 +02:00
signal.h [PARISC] convert to use CONFIG_64BIT instead of __LP64__ 2007-02-17 01:17:13 -05:00
smp.h parisc: convert to generic helpers for IPI function calls 2008-06-26 11:22:57 +02:00
socket.h flag parameters: paccept 2008-07-24 10:47:27 -07:00
sockios.h [NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution 2007-04-25 22:24:04 -07:00
spinlock.h [PARISC] Enable interrupts while spinning 2006-10-04 06:48:17 -06:00
spinlock_types.h [PARISC] "Fix" circular includes 2007-02-17 00:43:10 -05:00
stat.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
statfs.h PARISC: Use <asm-generic/statfs.h> 2008-09-06 19:30:10 +01:00
string.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
superio.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
system.h [PATCH] sched: sched_cacheflush is now unused 2007-07-19 21:28:35 +02:00
termbits.h parisc: new termios definitions 2008-05-15 10:38:54 -04:00
termios.h parisc: new termios definitions 2008-05-15 10:38:54 -04:00
thread_info.h container freezer: add TIF_FREEZE flag to all architectures 2008-10-20 08:52:33 -07:00
timex.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tlb.h add mm argument to pte/pmd/pud/pgd_free 2008-02-05 09:44:18 -08:00
tlbflush.h remove unused flush_tlb_pgtables 2007-10-19 11:53:34 -07:00
topology.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
traps.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
types.h parisc: types: use <asm-generic/int-*.h> for the parisc architecture 2008-05-02 16:18:32 -07:00
uaccess.h [PARISC] add ASM_EXCEPTIONTABLE_ENTRY() macro 2007-02-17 01:16:26 -05:00
ucontext.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unaligned.h kernel: Move arches to use common unaligned access 2008-04-29 08:06:27 -07:00
unistd.h [PARISC] bump __NR_syscalls 2008-03-15 19:11:54 -07:00
unwind.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
user.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vga.h vga.h: Fix prepocessor warning 2008-02-03 15:59:02 +02:00
xor.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00