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Re: [linux-pm] [PATCH][RFC] freezer : add the TIF_FREEZE flag to all archs [message #25381 is a reply to message #24664] Wed, 05 December 2007 20:27 Go to previous message
Pavel Machek is currently offline  Pavel Machek
Messages: 34
Registered: February 2006
Member
 
On Fri 2007-12-07 14:50:04, Cedric Le Goater wrote:
> From: Cedric Le Goater <clg@fr.ibm.com>
> 
> This patch is 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.
> 
> If you think this is safe and not utterly stupid, I'll send the rest
> of the patchset exporting the refrigerator to all arches.

I guess you should talk to Linus/akpm. Refrigertor is not going awa
anytime soon, but there's shadow of deprecation over it; when people wanted to use it outside suspend (cpu
hotplug), it turned out to be bad idea.

							Pavel

> Thanks,
> 
> C.
> 
> Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
> ---
>  include/asm-alpha/thread_info.h     |    2 ++
>  include/asm-avr32/thread_info.h     |    2 ++
>  include/asm-cris/thread_info.h      |    2 ++
>  include/asm-h8300/thread_info.h     |    2 ++
>  include/asm-m68k/thread_info.h      |    1 +
>  include/asm-m68knommu/thread_info.h |    2 ++
>  include/asm-parisc/thread_info.h    |    2 ++
>  include/asm-s390/thread_info.h      |    2 ++
>  include/asm-sparc/thread_info.h     |    2 ++
>  include/asm-sparc64/thread_info.h   |    2 ++
>  include/asm-um/thread_info.h        |    2 ++
>  include/asm-v850/thread_info.h      |    2 ++
>  include/asm-xtensa/thread_info.h    |    2 ++
>  13 files changed, 25 insertions(+)
> 
> Index: 2.6.24-rc4-mm1/include/asm-alpha/thread_info.h
> ===================================================================
> --- 2.6.24-rc4-mm1.orig/include/asm-alpha/thread_info.h
> +++ 2.6.24-rc4-mm1/include/asm-alpha/thread_info.h
> @@ -76,12 +76,14 @@ register struct thread_info *__current_t
>  #define TIF_UAC_SIGBUS		7
>  #define TIF_MEMDIE		8
>  #define TIF_RESTORE_SIGMASK	9	/* restore signal mask in do_signal */
> +#define TIF_FREEZE		19	/* is freezing for suspend */
>  
>  #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
>  #define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
>  #define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
>  #define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
>  #define _TIF_RESTORE_SIGMASK	(1<<TIF_RESTORE_SIGMASK)
> +#define _TIF_FREEZE		(1<<TIF_FREEZE)
>  
>  /* Work to do on interrupt/exception return.  */
>  #define _TIF_WORK_MASK		(_TIF_SIGPENDING | _TIF_NEED_RESCHED)
> Index: 2.6.24-rc4-mm1/include/asm-avr32/thread_info.h
> ===================================================================
> --- 2.6.24-rc4-mm1.orig/include/asm-avr32/thread_info.h
> +++ 2.6.24-rc4-mm1/include/asm-avr32/thread_info.h
> @@ -88,6 +88,7 @@ static inline struct thread_info *curren
>  #define TIF_MEMDIE		6
>  #define TIF_RESTORE_SIGMASK	7	/* restore signal mask in do_signal */
>  #define TIF_CPU_GOING_TO_SLEEP	8	/* CPU is entering sleep 0 mode */
> +#define TIF_FREEZE		19	/* is freezing for suspend */
>  #define TIF_DEBUG		30	/* debugging enabled */
>  #define TIF_USERSPACE		31      /* true if FS sets userspace */
>  
> @@ -99,6 +100,7 @@ static inline struct thread_info *curren
>  #define _TIF_MEMDIE		(1 << TIF_MEMDIE)
>  #define _TIF_RESTORE_SIGMASK	(1 << TIF_RESTORE_SIGMASK)
>  #define _TIF_CPU_GOING_TO_SLEEP (1 << TIF_CPU_GOING_TO_SLEEP)
> +#define _TIF_FREEZE		(1 << TIF_FREEZE)
>  
>  /* Note: The masks below must never span more than 16 bits! */
>  
> Index: 2.6.24-rc4-mm1/include/asm-cris/thread_info.h
> ===================================================================
> --- 2.6.24-rc4-mm1.orig/include/asm-cris/thread_info.h
> +++ 2.6.24-rc4-mm1/include/asm-cris/thread_info.h
> @@ -86,6 +86,7 @@ struct thread_info {
>  #define TIF_RESTORE_SIGMASK	9	/* restore signal mask in do_signal() */
>  #define TIF_POLLING_NRFLAG	16	/* true if poll_idle() is polling TIF_NEED_RESCHED */
>  #define TIF_MEMDIE		17
> +#define TIF_FREEZE		19	/* is freezing for suspend */
>  
>  #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
>  #define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)
> @@ -93,6 +94,7 @@ struct thread_info {
>  #define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
>  #define _TIF_RESTORE_SIGMASK	(1<<TIF_RESTORE_SIGMASK)
>  #define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
> +#define _TIF_FREEZE		(1<<TIF_FREEZE)
>  
>  #define _TIF_WORK_MASK		0x0000FFFE	/* work to do on interrupt/exception return */
>  #define _TIF_ALLWORK_MASK	0x0000FFFF	/* work to do on any return to u-space */
> Index: 2.6.24-rc4-mm1/include/asm-h8300/thread_info.h
> ===================================================================
> --- 2.6.24-rc4-mm1.orig/include/asm-h8300/thread_info.h
> +++ 2.6.24-rc4-mm1/include/asm-h8300/thread_info.h
> @@ -92,6 +92,7 @@ static inline struct thread_info *curren
>  					   TIF_NEED_RESCHED */
>  #define TIF_MEMDIE		4
>  #define TIF_RESTORE_SIGMASK	5	/* restore signal mask in do_signal() */
> +#define TIF_FREEZE		19	/* is freezing for suspend */
>  
>  /* as above, but as bit values */
>  #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
> @@ -99,6 +100,7 @@ static inline struct thread_info *curren
>  #define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
>  #define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
>  #define _TIF_RESTORE_SIGMASK	(1<<TIF_RESTORE_SIGMASK)
> +#define _TIF_FREEZE		(1<<TIF_FREEZE)
>  
>  #define _TIF_WORK_MASK		0x0000FFFE	/* work to do on interrupt/exception return */
>  
> Index: 2.6.24-rc4-mm1/include/asm-m68k/thread_info.h
> ===================================================================
> --- 2.6.24-rc4-mm1.orig/include/asm-m68k/thread_info.h
> +++ 2.6.24-rc4-mm1/include/asm-m68k/thread_info.h
> @@ -58,5 +58,6 @@ struct thread_info {
>  #define TIF_DELAYED_TRACE	14	/* single step a syscall */
>  #define TIF_SYSCALL_TRACE	15	/* syscall trace active */
>  #define TIF_MEMDIE		16
> +#define TIF_FREEZE		19
>  
>  #endif	/* _ASM_M68K_THREAD_INFO_H */
> Index: 2.6.24-rc4-mm1/include/asm-m68knommu/thread_info.h
> ===================================================================
> --- 2.6.24-rc4-mm1.orig/include/asm-m68knommu/thread_info.h
> +++ 2.6.24-rc4-mm1/include/asm-m68knommu/thread_info.h
> @@ -88,12 +88,14 @@ static inline struct thread_info *curren
>  #define TIF_POLLING_NRFLAG	3	/* true if poll_idle() is polling
>  					   TIF_NEED_RESCHED */
>  #define TIF_MEMDIE		4
> +#define TIF_FREEZE		19	/* is freezing for suspend */
>  
>  /* as above, but as bit values */
>  #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
>  #define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
>  #define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
>  #define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
> +#define _TIF_FREEZE		(1<<TIF_FREEZE)
>  
>  #define _TIF_WORK_MASK		0x0000FFFE	/* work to do on interrupt/exception return */
>  
> Index: 2.6.24-rc4-mm1/include/asm-parisc/thread_info.h
> ===================================================================
> --- 2.6.24-rc4-mm1.orig/include/asm-parisc/thread_info.h
> +++ 2.6.24-rc4-mm1/include/asm-parisc/thread_info.h
> @@ -62,6 +62,7 @@ struct thread_info {
>  #define TIF_32BIT               4       /* 32 bit binary */
>  #define TIF_MEMDIE		5
>  #define TIF_RESTORE_SIGMASK	6	/* restore saved signal mask */
> +#define TIF_FREEZE		19	/* is freezing for suspend */
>  
>  #define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
>  #define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
> @@ -69,6 +70,7 @@ struct thread_info {
>  #define _TIF_POLLING_NRFLAG	(1 << TIF_POLLING_NRFLAG)
>  #define _TIF_32BIT		(1 << TIF_32BIT)
>  #define _TIF_RESTORE_SIGMASK	(1 << TIF_RESTORE_SIGMASK)
> +#define _TIF_FREEZE		(1 << TIF_FREEZE)
>  
>  #define _TIF_USER_WORK_MASK     (_TIF_SIGPENDING | \
>                                   _TIF_NEED_RESCHED | _TIF_RESTORE_SIGMASK)
> Index: 2.6.24-rc4-mm1/include/asm-s390/thread_info.h
> ===================================================================
> --- 2.6.24-rc4-mm1.orig/include/asm-s390/thread_info.h
> +++ 2.6.24-rc4-mm1/include/asm-s390/thread_info.h
> @@ -101,6 +101,7 @@ static inline struct thread_info *curren
>  					   TIF_NEED_RESCHED */
>  #define TIF_31BIT		18	/* 32bit process */ 
>  #define TIF_MEMDIE		19
> +#define TIF_FREEZE		20	/* is freezing for suspend */
>  
>  #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
>  #define _TIF_RESTORE_SIGMASK	(1<<TIF_RESTORE_SIGMASK)
> @@ -113,6 +114,7 @@ static inline struct thread_info *curren
>  #define _TIF_USEDFPU		(1<<TIF_USEDFPU)
>  #define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
>  #define _TIF_31BIT		(1<<TIF_31BIT)
> +#define _TIF_FREEZE		(1<<TIF_FREEZE)
>  
>  #endif /* __KERNEL__ */
>  
> Index: 2.6.24-rc4-mm1/include/asm-sparc/thread_info.h
> ===================================================================
> --- 2.6.24-rc4-mm1.orig/include/asm-sparc/thread_info.h
> +++ 2.6.24-rc4-mm1/include/asm-sparc/thread_info.h
> @@ -137,6 +137,7 @@ BTFIXUPDEF_CALL(void, free_thread_info, 
>  #define TIF_POLLING_NRFLAG	9	/* true if poll_idle() is polling
>  					 * TIF_NEED_RESCHED */
>  #define TIF_MEMDIE		10
> +#define TIF_FREEZE		19	/* is freezing for suspend */
>  
>  /* as above, but as bit values */
>  #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
> @@ -145,6 +146,7 @@ BTFIXUPDEF
 ...

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