linux/Documentation/power
Christoph Lameter 3e1d1d28d9 [PATCH] Cleanup patch for process freezing
1. Establish a simple API for process freezing defined in linux/include/sched.h:

   frozen(process)		Check for frozen process
   freezing(process)		Check if a process is being frozen
   freeze(process)		Tell a process to freeze (go to refrigerator)
   thaw_process(process)	Restart process
   frozen_process(process)	Process is frozen now

2. Remove all references to PF_FREEZE and PF_FROZEN from all
   kernel sources except sched.h

3. Fix numerous locations where try_to_freeze is manually done by a driver

4. Remove the argument that is no longer necessary from two function calls.

5. Some whitespace cleanup

6. Clear potential race in refrigerator (provides an open window of PF_FREEZE
   cleared before setting PF_FROZEN, recalc_sigpending does not check
   PF_FROZEN).

This patch does not address the problem of freeze_processes() violating the rule
that a task may only modify its own flags by setting PF_FREEZE. This is not clean
in an SMP environment. freeze(process) is therefore not SMP safe!

Signed-off-by: Christoph Lameter <christoph@lameter.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 17:10:13 -07:00
..
devices.txt [PATCH] Driver Core: remove driver model detach_state 2005-05-17 14:54:55 -07:00
interface.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kernel_threads.txt [PATCH] Cleanup patch for process freezing 2005-06-25 17:10:13 -07:00
pci.txt [PATCH] PCI: fix stale PCI pm docs 2005-05-03 23:45:14 -07:00
states.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
swsusp.txt [PATCH] Cleanup patch for process freezing 2005-06-25 17:10:13 -07:00
tricks.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
video.txt [PATCH] power/video.txt: update documentation with more systems 2005-04-16 15:25:34 -07:00
video_extension.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00