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authorNigel Cunningham <ncunningham@linuxmail.org>2006-12-07 07:34:28 +0300
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-07 19:39:28 +0300
commitff39593ad0ff7a79a3717edac6634407aa8200c2 (patch)
tree571e02e20d5d211224567d5cc22333196cf6f563 /include/linux/freezer.h
parent14b5b7cfaa110b1d25b8f80b01a8c97cf2db30bc (diff)
downloadlinux-ff39593ad0ff7a79a3717edac6634407aa8200c2.tar.xz
[PATCH] swsusp: thaw userspace and kernel space separately
Modify process thawing so that we can thaw kernel space without thawing userspace, and thaw kernelspace first. This will be useful in later patches, where I intend to get swsusp thawing kernel threads only before seeking to free memory. Signed-off-by: Nigel Cunningham <nigel@suspend2.net> Cc: Pavel Machek <pavel@ucw.cz> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/freezer.h')
-rw-r--r--include/linux/freezer.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/freezer.h b/include/linux/freezer.h
index 266373f74445..294ebea859c9 100644
--- a/include/linux/freezer.h
+++ b/include/linux/freezer.h
@@ -1,5 +1,8 @@
/* Freezer declarations */
+#define FREEZER_KERNEL_THREADS 0
+#define FREEZER_ALL_THREADS 1
+
#ifdef CONFIG_PM
/*
* Check if a process has been frozen
@@ -57,7 +60,8 @@ static inline void frozen_process(struct task_struct *p)
extern void refrigerator(void);
extern int freeze_processes(void);
-extern void thaw_processes(void);
+#define thaw_processes() do { thaw_some_processes(FREEZER_ALL_THREADS); } while(0)
+#define thaw_kernel_threads() do { thaw_some_processes(FREEZER_KERNEL_THREADS); } while(0)
static inline int try_to_freeze(void)
{
@@ -67,6 +71,9 @@ static inline int try_to_freeze(void)
} else
return 0;
}
+
+extern void thaw_some_processes(int all);
+
#else
static inline int frozen(struct task_struct *p) { return 0; }
static inline int freezing(struct task_struct *p) { return 0; }