[PATCH] Add include/linux/freezer.h and move definitions from sched.h

Move process freezing functions from include/linux/sched.h to freezer.h, so
that modifications to the freezer or the kernel configuration don't require
recompiling just about everything.

[akpm@osdl.org: fix ueagle driver]
Signed-off-by: Nigel Cunningham <nigel@suspend2.net>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/arm/kernel/signal.c

@@ -11,6 +11,7 @@
 #include <linux/signal.h>
 #include <linux/ptrace.h>
 #include <linux/personality.h>
+#include <linux/freezer.h>
 
 #include <asm/cacheflush.h>
 #include <asm/ucontext.h>

arch/avr32/kernel/signal.c

@@ -15,7 +15,7 @@
 #include <linux/errno.h>
 #include <linux/ptrace.h>
 #include <linux/unistd.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 
 #include <asm/uaccess.h>
 #include <asm/ucontext.h>

arch/frv/kernel/signal.c

@@ -21,7 +21,7 @@
 #include <linux/ptrace.h>
 #include <linux/unistd.h>
 #include <linux/personality.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #include <asm/ucontext.h>
 #include <asm/uaccess.h>
 #include <asm/cacheflush.h>

arch/h8300/kernel/signal.c

@@ -38,7 +38,7 @@
 #include <linux/personality.h>
 #include <linux/tty.h>
 #include <linux/binfmts.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 
 #include <asm/setup.h>
 #include <asm/uaccess.h>

arch/i386/kernel/io_apic.c

@@ -34,6 +34,7 @@
 #include <linux/pci.h>
 #include <linux/msi.h>
 #include <linux/htirq.h>
+#include <linux/freezer.h>
 
 #include <asm/io.h>
 #include <asm/smp.h>

arch/m32r/kernel/signal.c

@@ -21,7 +21,7 @@
 #include <linux/unistd.h>
 #include <linux/stddef.h>
 #include <linux/personality.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #include <asm/cacheflush.h>
 #include <asm/ucontext.h>
 #include <asm/uaccess.h>

arch/powerpc/kernel/signal_32.c

@@ -36,7 +36,7 @@
 #include <linux/stddef.h>
 #include <linux/tty.h>
 #include <linux/binfmts.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #endif
 
 #include <asm/uaccess.h>

arch/sh/kernel/signal.c

@@ -23,6 +23,7 @@
 #include <linux/elf.h>
 #include <linux/personality.h>
 #include <linux/binfmts.h>
+#include <linux/freezer.h>
 
 #include <asm/ucontext.h>
 #include <asm/uaccess.h>

arch/sh64/kernel/signal.c

@@ -22,7 +22,7 @@
 #include <linux/errno.h>
 #include <linux/wait.h>
 #include <linux/personality.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #include <linux/ptrace.h>
 #include <linux/unistd.h>
 #include <linux/stddef.h>

drivers/block/pktcdvd.c

@@ -54,7 +54,7 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/miscdevice.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #include <linux/mutex.h>
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_ioctl.h>

drivers/char/hvc_console.c

@@ -38,6 +38,7 @@
 #include <linux/sched.h>
 #include <linux/spinlock.h>
 #include <linux/delay.h>
+#include <linux/freezer.h>
 
 #include <asm/uaccess.h>
 

drivers/edac/edac_mc.c

@@ -28,6 +28,7 @@
 #include <linux/sysdev.h>
 #include <linux/ctype.h>
 #include <linux/kthread.h>
+#include <linux/freezer.h>
 #include <asm/uaccess.h>
 #include <asm/page.h>
 #include <asm/edac.h>

drivers/ieee1394/nodemgr.c

@@ -15,6 +15,7 @@
 #include <linux/delay.h>
 #include <linux/kthread.h>
 #include <linux/moduleparam.h>
+#include <linux/freezer.h>
 #include <asm/atomic.h>
 
 #include "csr.h"

drivers/input/gameport/gameport.c

@@ -23,6 +23,7 @@
 #include <linux/kthread.h>
 #include <linux/sched.h>	/* HZ */
 #include <linux/mutex.h>
+#include <linux/freezer.h>
 
 /*#include <asm/io.h>*/
 

drivers/input/serio/serio.c

@@ -35,6 +35,7 @@
 #include <linux/slab.h>
 #include <linux/kthread.h>
 #include <linux/mutex.h>
+#include <linux/freezer.h>
 
 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
 MODULE_DESCRIPTION("Serio abstraction core");

drivers/macintosh/therm_adt746x.c

@@ -24,6 +24,7 @@
 #include <linux/suspend.h>
 #include <linux/kthread.h>
 #include <linux/moduleparam.h>
+#include <linux/freezer.h>
 
 #include <asm/prom.h>
 #include <asm/machdep.h>

drivers/macintosh/via-pmu.c

@@ -42,7 +42,7 @@
 #include <linux/interrupt.h>
 #include <linux/device.h>
 #include <linux/sysdev.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #include <linux/syscalls.h>
 #include <linux/cpu.h>
 #include <asm/prom.h>

drivers/macintosh/windfarm_core.c

@@ -34,6 +34,7 @@
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/mutex.h>
+#include <linux/freezer.h>
 
 #include <asm/prom.h>
 

drivers/md/md.c

@@ -39,10 +39,10 @@
 #include <linux/raid/bitmap.h>
 #include <linux/sysctl.h>
 #include <linux/buffer_head.h> /* for invalidate_bdev */
-#include <linux/suspend.h>
 #include <linux/poll.h>
 #include <linux/mutex.h>
 #include <linux/ctype.h>
+#include <linux/freezer.h>
 
 #include <linux/init.h>
 

drivers/media/dvb/dvb-core/dvb_frontend.c

@@ -34,7 +34,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/list.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #include <linux/jiffies.h>
 #include <asm/processor.h>
 

drivers/media/video/msp3400-driver.c

@@ -56,7 +56,7 @@
 #include <media/tvaudio.h>
 #include <media/msp3400.h>
 #include <linux/kthread.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #include "msp3400-driver.h"
 
 /* ---------------------------------------------------------------------- */

drivers/media/video/tvaudio.c

@@ -29,6 +29,7 @@
 #include <linux/init.h>
 #include <linux/smp_lock.h>
 #include <linux/kthread.h>
+#include <linux/freezer.h>
 
 #include <media/tvaudio.h>
 #include <media/v4l2-common.h>

drivers/media/video/video-buf-dvb.c

@@ -20,7 +20,7 @@
 #include <linux/fs.h>
 #include <linux/kthread.h>
 #include <linux/file.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 
 #include <media/video-buf.h>
 #include <media/video-buf-dvb.h>

drivers/media/video/vivi.c

@@ -36,6 +36,7 @@
 #include <media/v4l2-common.h>
 #include <linux/kthread.h>
 #include <linux/highmem.h>
+#include <linux/freezer.h>
 
 /* Wake up at about 30 fps */
 #define WAKE_NUMERATOR 30

drivers/mfd/ucb1x00-ts.c

@@ -28,7 +28,7 @@
 #include <linux/string.h>
 #include <linux/input.h>
 #include <linux/device.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #include <linux/slab.h>
 #include <linux/kthread.h>
 

drivers/net/irda/stir4200.c

@@ -50,6 +50,7 @@
 #include <linux/usb.h>
 #include <linux/crc32.h>
 #include <linux/kthread.h>
+#include <linux/freezer.h>
 #include <net/irda/irda.h>
 #include <net/irda/irlap.h>
 #include <net/irda/irda_device.h>

drivers/net/wireless/airo.c

@@ -49,6 +49,7 @@
 #include <asm/uaccess.h>
 #include <net/ieee80211.h>
 #include <linux/kthread.h>
+#include <linux/freezer.h>
 
 #include "airo.h"
 

drivers/pcmcia/cs.c

@@ -29,6 +29,7 @@
 #include <linux/pci.h>
 #include <linux/device.h>
 #include <linux/kthread.h>
+#include <linux/freezer.h>
 #include <asm/system.h>
 #include <asm/irq.h>
 

drivers/pnp/pnpbios/core.c

@@ -61,6 +61,7 @@
 #include <linux/dmi.h>
 #include <linux/delay.h>
 #include <linux/acpi.h>
+#include <linux/freezer.h>
 
 #include <asm/page.h>
 #include <asm/desc.h>

drivers/usb/atm/ueagle-atm.c

@@ -64,6 +64,8 @@
 #include <linux/kthread.h>
 #include <linux/version.h>
 #include <linux/mutex.h>
+#include <linux/freezer.h>
+
 #include <asm/unaligned.h>
 
 #include "usbatm.h"

drivers/usb/core/hub.c

@@ -22,6 +22,7 @@
 #include <linux/usbdevice_fs.h>
 #include <linux/kthread.h>
 #include <linux/mutex.h>
+#include <linux/freezer.h>
 
 #include <asm/semaphore.h>
 #include <asm/uaccess.h>

drivers/usb/gadget/file_storage.c

@@ -250,7 +250,7 @@
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/string.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #include <linux/utsname.h>
 
 #include <linux/usb_ch9.h>

drivers/usb/storage/usb.c

@@ -49,7 +49,7 @@
 
 #include <linux/sched.h>
 #include <linux/errno.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/slab.h>

drivers/w1/w1.c

@@ -31,6 +31,7 @@
 #include <linux/slab.h>
 #include <linux/sched.h>
 #include <linux/kthread.h>
+#include <linux/freezer.h>
 
 #include <asm/atomic.h>
 

fs/afs/kafsasyncd.c

@@ -20,6 +20,7 @@
 #include <linux/init.h>
 #include <linux/sched.h>
 #include <linux/completion.h>
+#include <linux/freezer.h>
 #include "cell.h"
 #include "server.h"
 #include "volume.h"

fs/afs/kafstimod.c

@@ -13,6 +13,7 @@
 #include <linux/init.h>
 #include <linux/sched.h>
 #include <linux/completion.h>
+#include <linux/freezer.h>
 #include "cell.h"
 #include "volume.h"
 #include "kafstimod.h"

fs/cifs/cifsfs.c

@@ -34,6 +34,7 @@
 #include <linux/mempool.h>
 #include <linux/delay.h>
 #include <linux/kthread.h>
+#include <linux/freezer.h>
 #include "cifsfs.h"
 #include "cifspdu.h"
 #define DECLARE_GLOBALS_HERE

fs/cifs/connect.c

@@ -31,6 +31,7 @@
 #include <linux/delay.h>
 #include <linux/completion.h>
 #include <linux/pagevec.h>
+#include <linux/freezer.h>
 #include <asm/uaccess.h>
 #include <asm/processor.h>
 #include "cifspdu.h"

fs/jbd/journal.c

@@ -31,7 +31,7 @@
 #include <linux/smp_lock.h>
 #include <linux/init.h>
 #include <linux/mm.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #include <linux/pagemap.h>
 #include <linux/kthread.h>
 #include <linux/poison.h>

fs/jbd2/journal.c

@@ -31,7 +31,7 @@
 #include <linux/smp_lock.h>
 #include <linux/init.h>
 #include <linux/mm.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #include <linux/pagemap.h>
 #include <linux/kthread.h>
 #include <linux/poison.h>

fs/jffs/intrep.c

@@ -66,6 +66,7 @@
 #include <linux/smp_lock.h>
 #include <linux/time.h>
 #include <linux/ctype.h>
+#include <linux/freezer.h>
 
 #include "intrep.h"
 #include "jffs_fm.h"

fs/jffs2/background.c

@@ -16,6 +16,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/completion.h>
 #include <linux/sched.h>
+#include <linux/freezer.h>
 #include "nodelist.h"
 
 

fs/jfs/jfs_logmgr.c

@@ -67,7 +67,7 @@
 #include <linux/kthread.h>
 #include <linux/buffer_head.h>		/* for sync_blockdev() */
 #include <linux/bio.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #include <linux/delay.h>
 #include <linux/mutex.h>
 #include "jfs_incore.h"

fs/jfs/jfs_txnmgr.c

@@ -46,7 +46,7 @@
 #include <linux/vmalloc.h>
 #include <linux/smp_lock.h>
 #include <linux/completion.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/kthread.h>

fs/lockd/clntproc.c

@@ -13,6 +13,7 @@
 #include <linux/nfs_fs.h>
 #include <linux/utsname.h>
 #include <linux/smp_lock.h>
+#include <linux/freezer.h>
 #include <linux/sunrpc/clnt.h>
 #include <linux/sunrpc/svc.h>
 #include <linux/lockd/lockd.h>

fs/xfs/linux-2.6/xfs_buf.c

@@ -32,6 +32,7 @@
 #include <linux/kthread.h>
 #include <linux/migrate.h>
 #include <linux/backing-dev.h>
+#include <linux/freezer.h>
 
 STATIC kmem_zone_t *xfs_buf_zone;
 STATIC kmem_shaker_t xfs_buf_shake;

fs/xfs/linux-2.6/xfs_super.c

@@ -56,6 +56,7 @@
 #include <linux/mempool.h>
 #include <linux/writeback.h>
 #include <linux/kthread.h>
+#include <linux/freezer.h>
 
 STATIC struct quotactl_ops xfs_quotactl_operations;
 STATIC struct super_operations xfs_super_operations;

include/linux/freezer.h

@@ -0,0 +1,84 @@
+/* Freezer declarations */
+
+#ifdef CONFIG_PM
+/*
+ * Check if a process has been frozen
+ */
+static inline int frozen(struct task_struct *p)
+{
+	return p->flags & PF_FROZEN;
+}
+
+/*
+ * Check if there is a request to freeze a process
+ */
+static inline int freezing(struct task_struct *p)
+{
+	return p->flags & PF_FREEZE;
+}
+
+/*
+ * Request that a process be frozen
+ * FIXME: SMP problem. We may not modify other process' flags!
+ */
+static inline void freeze(struct task_struct *p)
+{
+	p->flags |= PF_FREEZE;
+}
+
+/*
+ * Sometimes we may need to cancel the previous 'freeze' request
+ */
+static inline void do_not_freeze(struct task_struct *p)
+{
+	p->flags &= ~PF_FREEZE;
+}
+
+/*
+ * Wake up a frozen process
+ */
+static inline int thaw_process(struct task_struct *p)
+{
+	if (frozen(p)) {
+		p->flags &= ~PF_FROZEN;
+		wake_up_process(p);
+		return 1;
+	}
+	return 0;
+}
+
+/*
+ * freezing is complete, mark process as frozen
+ */
+static inline void frozen_process(struct task_struct *p)
+{
+	p->flags = (p->flags & ~PF_FREEZE) | PF_FROZEN;
+}
+
+extern void refrigerator(void);
+extern int freeze_processes(void);
+extern void thaw_processes(void);
+
+static inline int try_to_freeze(void)
+{
+	if (freezing(current)) {
+		refrigerator();
+		return 1;
+	} else
+		return 0;
+}
+#else
+static inline int frozen(struct task_struct *p) { return 0; }
+static inline int freezing(struct task_struct *p) { return 0; }
+static inline void freeze(struct task_struct *p) { BUG(); }
+static inline int thaw_process(struct task_struct *p) { return 1; }
+static inline void frozen_process(struct task_struct *p) { BUG(); }
+
+static inline void refrigerator(void) {}
+static inline int freeze_processes(void) { BUG(); return 0; }
+static inline void thaw_processes(void) {}
+
+static inline int try_to_freeze(void) { return 0; }
+
+
+#endif

include/linux/sched.h

@@ -1618,87 +1618,6 @@ extern int sched_create_sysfs_power_savings_entries(struct sysdev_class *cls);
 
 extern void normalize_rt_tasks(void);
 
-#ifdef CONFIG_PM
-/*
- * Check if a process has been frozen
- */
-static inline int frozen(struct task_struct *p)
-{
-	return p->flags & PF_FROZEN;
-}
-
-/*
- * Check if there is a request to freeze a process
- */
-static inline int freezing(struct task_struct *p)
-{
-	return p->flags & PF_FREEZE;
-}
-
-/*
- * Request that a process be frozen
- * FIXME: SMP problem. We may not modify other process' flags!
- */
-static inline void freeze(struct task_struct *p)
-{
-	p->flags |= PF_FREEZE;
-}
-
-/*
- * Sometimes we may need to cancel the previous 'freeze' request
- */
-static inline void do_not_freeze(struct task_struct *p)
-{
-	p->flags &= ~PF_FREEZE;
-}
-
-/*
- * Wake up a frozen process
- */
-static inline int thaw_process(struct task_struct *p)
-{
-	if (frozen(p)) {
-		p->flags &= ~PF_FROZEN;
-		wake_up_process(p);
-		return 1;
-	}
-	return 0;
-}
-
-/*
- * freezing is complete, mark process as frozen
- */
-static inline void frozen_process(struct task_struct *p)
-{
-	p->flags = (p->flags & ~PF_FREEZE) | PF_FROZEN;
-}
-
-extern void refrigerator(void);
-extern int freeze_processes(void);
-extern void thaw_processes(void);
-
-static inline int try_to_freeze(void)
-{
-	if (freezing(current)) {
-		refrigerator();
-		return 1;
-	} else
-		return 0;
-}
-#else
-static inline int frozen(struct task_struct *p) { return 0; }
-static inline int freezing(struct task_struct *p) { return 0; }
-static inline void freeze(struct task_struct *p) { BUG(); }
-static inline int thaw_process(struct task_struct *p) { return 1; }
-static inline void frozen_process(struct task_struct *p) { BUG(); }
-
-static inline void refrigerator(void) {}
-static inline int freeze_processes(void) { BUG(); return 0; }
-static inline void thaw_processes(void) {}
-
-static inline int try_to_freeze(void) { return 0; }
-
-#endif /* CONFIG_PM */
 #endif /* __KERNEL__ */
 
 #endif

init/do_mounts_initrd.c

@@ -6,6 +6,7 @@
 #include <linux/romfs_fs.h>
 #include <linux/initrd.h>
 #include <linux/sched.h>
+#include <linux/freezer.h>
 
 #include "do_mounts.h"
 

kernel/audit.c

@@ -57,6 +57,7 @@
 #include <linux/netlink.h>
 #include <linux/selinux.h>
 #include <linux/inotify.h>
+#include <linux/freezer.h>
 
 #include "audit.h"
 

kernel/power/disk.c

@@ -20,6 +20,7 @@
 #include <linux/pm.h>
 #include <linux/console.h>
 #include <linux/cpu.h>
+#include <linux/freezer.h>
 
 #include "power.h"
 

kernel/power/main.c

@@ -18,6 +18,7 @@
 #include <linux/console.h>
 #include <linux/cpu.h>
 #include <linux/resume-trace.h>
+#include <linux/freezer.h>
 
 #include "power.h"
 

kernel/power/process.c

@@ -13,6 +13,7 @@
 #include <linux/suspend.h>
 #include <linux/module.h>
 #include <linux/syscalls.h>
+#include <linux/freezer.h>
 
 /* 
  * Timeout for stopping processes

kernel/power/user.c

@@ -22,6 +22,7 @@
 #include <linux/fs.h>
 #include <linux/console.h>
 #include <linux/cpu.h>
+#include <linux/freezer.h>
 
 #include <asm/uaccess.h>
 

kernel/rtmutex-tester.c

@@ -13,6 +13,7 @@
 #include <linux/spinlock.h>
 #include <linux/sysdev.h>
 #include <linux/timer.h>
+#include <linux/freezer.h>
 
 #include "rtmutex.h"
 

kernel/sched.c

@@ -34,7 +34,7 @@
 #include <linux/security.h>
 #include <linux/notifier.h>
 #include <linux/profile.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
 #include <linux/vmalloc.h>
 #include <linux/blkdev.h>
 #include <linux/delay.h>

kernel/signal.c

@@ -23,6 +23,7 @@
 #include <linux/ptrace.h>
 #include <linux/signal.h>
 #include <linux/capability.h>
+#include <linux/freezer.h>
 #include <asm/param.h>
 #include <asm/uaccess.h>
 #include <asm/unistd.h>

mm/pdflush.c

@@ -21,6 +21,7 @@
 #include <linux/writeback.h>	// Prototypes pdflush_operation()
 #include <linux/kthread.h>
 #include <linux/cpuset.h>
+#include <linux/freezer.h>
 
 
 /*

mm/vmscan.c

@@ -36,6 +36,7 @@
 #include <linux/rwsem.h>
 #include <linux/delay.h>
 #include <linux/kthread.h>
+#include <linux/freezer.h>
 
 #include <asm/tlbflush.h>
 #include <asm/div64.h>

net/rxrpc/krxiod.c

@@ -13,6 +13,7 @@
 #include <linux/completion.h>
 #include <linux/spinlock.h>
 #include <linux/init.h>
+#include <linux/freezer.h>
 #include <rxrpc/krxiod.h>
 #include <rxrpc/transport.h>
 #include <rxrpc/peer.h>

net/rxrpc/krxsecd.c

@@ -27,6 +27,7 @@
 #include <rxrpc/call.h>
 #include <linux/udp.h>
 #include <linux/ip.h>
+#include <linux/freezer.h>
 #include <net/sock.h>
 #include "internal.h"
 

net/rxrpc/krxtimod.c

@@ -13,6 +13,7 @@
 #include <linux/init.h>
 #include <linux/sched.h>
 #include <linux/completion.h>
+#include <linux/freezer.h>
 #include <rxrpc/rxrpc.h>
 #include <rxrpc/krxtimod.h>
 #include <asm/errno.h>

net/sunrpc/svcsock.c

@@ -32,6 +32,7 @@
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
 #include <linux/file.h>
+#include <linux/freezer.h>
 #include <net/sock.h>
 #include <net/checksum.h>
 #include <net/ip.h>