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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
..
platform-iss fix file specification in comments 2007-05-09 08:58:16 +02:00
variant-fsf [XTENSA] Add support for configurable registers and coprocessors 2008-02-13 17:41:43 -08:00
asmmacro.h [PATCH] xtensa: remove extra header files 2006-12-10 09:55:39 -08:00
atomic.h atomic.h: atomic_add_unless as inline. Remove system.h atomic.h circular dependency 2007-05-08 11:15:20 -07:00
auxvec.h [PATCH] auxiliary vector cleanups 2005-09-07 16:57:21 -07:00
bitops.h forbid asm/bitops.h direct inclusion 2007-10-19 11:53:41 -07:00
bootparam.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
bug.h [PATCH] xtensa: fix irq and misc fixes 2006-12-10 09:55:39 -08:00
bugs.h [XTENSA] Remove extraneous include statement 2007-08-27 13:53:27 -07:00
byteorder.h [XTENSA] clean-up header files 2007-05-31 17:47:01 -07:00
cache.h [XTENSA] Add support for cache-aliasing 2007-08-27 13:54:16 -07:00
cacheasm.h [PATCH] xtensa: remove extra header files 2006-12-10 09:55:39 -08:00
cacheflush.h [XTENSA] Fix cache flush macro for D$/I$ aliasing/non-aliasing 2008-02-13 17:43:26 -08:00
checksum.h [PATCH] xtensa: remove extra header files 2006-12-10 09:55:39 -08:00
coprocessor.h [XTENSA] Exclude thread-global registers from the xtregs structures. 2008-02-13 17:43:00 -08:00
cpumask.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
cputime.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
current.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
delay.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
device.h Driver core: add dev_archdata to struct device 2006-12-01 14:52:01 -08:00
div64.h [XTENSA] Use generic 64-bit division 2007-05-31 17:46:09 -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 [PATCH] xtensa: remove extra header files 2006-12-10 09:55:39 -08:00
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 [PATCH] xtensa: cleanups for errno and ipc. 2005-06-30 08:45:10 -07:00
fb.h fbdev: detect primary display device 2007-07-17 10:23:11 -07:00
fcntl.h Xtensa: use asm-generic/fcntl.h 2007-05-31 20:18:25 -07:00
futex.h [PATCH] xtensa: add asm/futex.h 2006-02-01 08:53:23 -08:00
hardirq.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
highmem.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
hw_irq.h [PATCH] genirq: add ->retrigger() irq op to consolidate hw_irq_resend() 2006-06-29 10:26:23 -07:00
io.h [XTENSA] Add support for cache-aliasing 2007-08-27 13:54:16 -07:00
ioctl.h [PATCH] Generic ioctl.h 2006-01-10 08:01:34 -08:00
ioctls.h [patch 1/2] Xtensa: enable arbitary tty speed setting ioctls 2007-08-27 13:54:25 -07:00
ipcbuf.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
irq.h [PATCH] xtensa: remove extra header files 2006-12-10 09:55:39 -08:00
irq_regs.h [PATCH] xtensa: fix irq and misc fixes 2006-12-10 09:55:39 -08:00
Kbuild Add empty Kbuild files for 'make headers_install' in remaining arches. 2006-06-18 12:58:53 +01:00
kdebug.h move die notifier handling to common code 2007-05-08 11:15:04 -07:00
kmap_types.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
linkage.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
local.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
mman.h [PATCH] Remove final references to deprecated "MAP_ANON" page protection flag 2007-02-11 10:51:17 -08:00
mmu.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
mmu_context.h [XTENSA] clean-up header files 2007-05-31 17:47:01 -07:00
module.h [XTENSA] Fix modules for non-exec processor configurations 2008-02-13 17:23:26 -08:00
msgbuf.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
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 asm-{alpha,h8300,um,v850,xtensa}/param.h: unbreak HZ for userspace 2008-05-14 19:11:14 -07:00
pci-bridge.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
pci.h PCI: remove pci_dac_dma_... APIs 2007-07-11 16:02:11 -07:00
percpu.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
pgalloc.h [XTENSA] Fix non-existent pte_token_t typedef to pgtable_t 2008-02-13 16:25:09 -08:00
pgtable.h mm: introduce pte_special pte bit 2008-04-28 08:58:23 -07:00
platform.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
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
processor.h [XTENSA] Add support for configurable registers and coprocessors 2008-02-13 17:41:43 -08:00
ptrace.h include/asm/ptrace.h userspace headers cleanup 2008-07-25 10:53:39 -07:00
regs.h [XTENSA] Add support for configurable registers and coprocessors 2008-02-13 17:41:43 -08:00
resource.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
rmap.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
rwsem.h [PATCH] lockdep: remove RWSEM_DEBUG remnants 2006-07-03 15:27:01 -07:00
scatterlist.h Add CONFIG_DEBUG_SG sg validation 2007-10-22 21:20:03 +02:00
sections.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
segment.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
sembuf.h [PATCH] xtensa: remove extra header files 2006-12-10 09:55:39 -08:00
serial.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
setup.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
shmbuf.h [PATCH] xtensa: fix system call interface 2006-12-10 09:55:39 -08:00
shmparam.h [XTENSA] clean-up header files 2007-05-31 17:47:01 -07:00
sigcontext.h [XTENSA] Add support for configurable registers and coprocessors 2008-02-13 17:41:43 -08:00
siginfo.h fix file specification in comments 2006-10-03 23:01:26 +02:00
signal.h [PATCH] irq-flags: XTENSA: Use the new IRQF_ constants 2006-07-02 13:58:49 -07:00
smp.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
socket.h [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
sockios.h [NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution 2007-04-25 22:24:04 -07:00
spinlock.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
stat.h [XTENSA] Clean up stat structs. 2008-02-13 17:27:03 -08:00
statfs.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
string.h [PATCH] xtensa: replace 'extern inline' with 'static inline' 2005-09-05 00:06:25 -07:00
syscall.h [XTENSA] Fix fadvise64_64 2007-08-27 13:53:32 -07:00
system.h [XTENSA] Add support for configurable registers and coprocessors 2008-02-13 17:41:43 -08:00
termbits.h [patch 1/2] Xtensa: enable arbitary tty speed setting ioctls 2007-08-27 13:54:25 -07:00
termios.h [patch 1/2] Xtensa: enable arbitary tty speed setting ioctls 2007-08-27 13:54:25 -07:00
thread_info.h container freezer: add TIF_FREEZE flag to all architectures 2008-10-20 08:52:33 -07:00
timex.h [XTENSA] Add volatile keyword to asm statements accessing counter registers 2008-02-13 17:24:47 -08:00
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 [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
types.h xtensa: types: use <asm-generic/int-*.h> for the xtensa architecture 2008-05-02 16:18:42 -07:00
uaccess.h [XTENSA] Fix clobbered register in asm macro 2008-02-13 17:06:41 -08:00
ucontext.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
unaligned.h kernel: Move arches to use common unaligned access 2008-04-29 08:06:27 -07:00
unistd.h fix xtensa timerfd breakage 2008-02-08 15:33:32 -08:00
user.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00
vga.h [PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use 2006-06-22 15:05:58 -07:00
xor.h [PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6 2005-06-24 00:05:22 -07:00