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arch: Consolidate tsk_is_polling()

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Move it to a common place. Preparatory patch for implementing
set/clear for the idle need_resched poll implementation.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Magnus Damm <magnus.damm@gmail.com>
Link: http://lkml.kernel.org/r/20130321215233.446034505@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2013-03-21 22:49:32 +01:00
parent 6546327ad1
commit ee761f629d
15 changed files with 20 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/alpha/include/asm/thread_info.h
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@ -95,8 +95,6 @@ register struct thread_info *__current_thread_info __asm__("$8");
#define TS_POLLING 0x0010 /* idle task polling need_resched,
skip sending interrupt */
#define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING)
#ifndef __ASSEMBLY__
#define HAVE_SET_RESTORE_SIGMASK 1
static inline void set_restore_sigmask(void)

2
arch/ia64/include/asm/thread_info.h
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@ -131,8 +131,6 @@ struct thread_info {
#define TS_POLLING 1 /* true if in idle loop and not sleeping */
#define TS_RESTORE_SIGMASK 2 /* restore signal mask in do_signal() */
#define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING)
#ifndef __ASSEMBLY__
#define HAVE_SET_RESTORE_SIGMASK 1
static inline void set_restore_sigmask(void)

2
arch/metag/include/asm/thread_info.h
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@ -150,6 +150,4 @@ static inline int kstack_end(void *addr)
#define _TIF_WORK_MASK (_TIF_ALLWORK_MASK & ~(_TIF_SYSCALL_TRACE | \
_TIF_SYSCALL_AUDIT | _TIF_SINGLESTEP))
#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG)
#endif /* _ASM_THREAD_INFO_H */

1
arch/microblaze/include/asm/thread_info.h
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@ -182,7 +182,6 @@ static inline bool test_and_clear_restore_sigmask(void)
ti->status &= ~TS_RESTORE_SIGMASK;
return true;
}
#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG)
#endif
#endif /* __KERNEL__ */

2
arch/mn10300/include/asm/thread_info.h
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@ -165,8 +165,6 @@ void arch_release_thread_info(struct thread_info *ti);
#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 */
#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG)
#endif /* __KERNEL__ */
#endif /* _ASM_THREAD_INFO_H */

2
arch/openrisc/include/asm/thread_info.h
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@ -128,8 +128,6 @@ register struct thread_info *current_thread_info_reg asm("r10");
/* For OpenRISC, this is anything in the LSW other than syscall trace */
#define _TIF_WORK_MASK (0xff & ~(_TIF_SYSCALL_TRACE|_TIF_SINGLESTEP))
#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG)
#endif /* __KERNEL__ */
#endif /* _ASM_THREAD_INFO_H */

2
arch/parisc/include/asm/thread_info.h
View File

@ -77,8 +77,6 @@ struct thread_info {
#define _TIF_SYSCALL_TRACE_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \
_TIF_BLOCKSTEP)
#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG)
#endif /* __KERNEL__ */
#endif /* _ASM_PARISC_THREAD_INFO_H */

2
arch/powerpc/include/asm/thread_info.h
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@ -182,8 +182,6 @@ static inline bool test_thread_local_flags(unsigned int flags)
#define is_32bit_task() (1)
#endif
#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG)
#endif /* !__ASSEMBLY__ */
#endif /* __KERNEL__ */

2
arch/sh/include/asm/thread_info.h
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@ -207,8 +207,6 @@ static inline bool test_and_clear_restore_sigmask(void)
return true;
}
#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG)
#endif /* !__ASSEMBLY__ */
#endif /* __KERNEL__ */

2
arch/sparc/include/asm/thread_info_32.h
View File

@ -132,8 +132,6 @@ register struct thread_info *current_thread_info_reg asm("g6");
#define _TIF_DO_NOTIFY_RESUME_MASK (_TIF_NOTIFY_RESUME | \
_TIF_SIGPENDING)
#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG)
#endif /* __KERNEL__ */
#endif /* _ASM_THREAD_INFO_H */

2
arch/sparc/include/asm/thread_info_64.h
View File

@ -256,8 +256,6 @@ static inline bool test_and_clear_restore_sigmask(void)
return true;
}
#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG)
#define thread32_stack_is_64bit(__SP) (((__SP) & 0x1) != 0)
#define test_thread_64bit_stack(__SP) \
((test_thread_flag(TIF_32BIT) && !thread32_stack_is_64bit(__SP)) ? \

2
arch/tile/include/asm/thread_info.h
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@ -153,8 +153,6 @@ extern void _cpu_idle(void);
#define TS_POLLING 0x0004 /* in idle loop but not sleeping */
#define TS_RESTORE_SIGMASK 0x0008 /* restore signal mask in do_signal */
#define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING)
#ifndef __ASSEMBLY__
#define HAVE_SET_RESTORE_SIGMASK 1
static inline void set_restore_sigmask(void)

2
arch/x86/include/asm/thread_info.h
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@ -241,8 +241,6 @@ static inline struct thread_info *current_thread_info(void)
skip sending interrupt */
#define TS_RESTORE_SIGMASK 0x0008 /* restore signal mask in do_signal() */
#define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING)
#ifndef __ASSEMBLY__
#define HAVE_SET_RESTORE_SIGMASK 1
static inline void set_restore_sigmask(void)

20
include/linux/sched.h
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@ -2621,6 +2621,26 @@ static inline int spin_needbreak(spinlock_t *lock)
#endif
}
/*
* Idle thread specific functions to determine the need_resched
* polling state. We have two versions, one based on TS_POLLING in
* thread_info.status and one based on TIF_POLLING_NRFLAG in
* thread_info.flags
*/
#ifdef TS_POLLING
static inline int tsk_is_polling(struct task_struct *p)
{
return task_thread_info(p)->status & TS_POLLING;
}
#elif defined(TIF_POLLING_NRFLAG)
static inline int tsk_is_polling(struct task_struct *p)
{
return test_tsk_thread_flag(p, TIF_POLLING_NRFLAG);
}
#else
static inline int tsk_is_polling(struct task_struct *p) { return 0; }
#endif
/*
* Thread group CPU time accounting.
*/

5
kernel/sched/core.c
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@ -512,11 +512,6 @@ static inline void init_hrtick(void)
* the target CPU.
*/
#ifdef CONFIG_SMP
#ifndef tsk_is_polling
#define tsk_is_polling(t) 0
#endif
void resched_task(struct task_struct *p)
{
int cpu;