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locking/core: Provide common cpu_relax_yield() definition

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No need to duplicate the same define everywhere. Since
the only user is stop-machine and the only provider is
s390, we can use a default implementation of cpu_relax_yield()
in sched.h.

Suggested-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Noam Camus <noamc@ezchip.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: kvm@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-s390 <linux-s390@vger.kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: sparclinux@vger.kernel.org
Cc: virtualization@lists.linux-foundation.org
Cc: xen-devel@lists.xenproject.org
Link: http://lkml.kernel.org/r/1479298985-191589-1-git-send-email-borntraeger@de.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Christian Borntraeger
2016-11-16 13:23:05 +01:00
committed by Ingo Molnar
parent 43496d3551
commit 6d0d287891
33 changed files with 5 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/alpha/include/asm/processor.h
-1
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@@ -58,7 +58,6 @@ unsigned long get_wchan(struct task_struct *p);
((tsk) == current ? rdusp() : task_thread_info(tsk)->pcb.usp)
#define cpu_relax() barrier()
#define cpu_relax_yield() cpu_relax()
#define ARCH_HAS_PREFETCH
#define ARCH_HAS_PREFETCHW
arch/arc/include/asm/processor.h
-3
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@@ -60,15 +60,12 @@ struct task_struct;
#ifndef CONFIG_EZNPS_MTM_EXT
#define cpu_relax() barrier()
#define cpu_relax_yield() cpu_relax()
#else
#define cpu_relax() \
__asm__ __volatile__ (".word %0" : : "i"(CTOP_INST_SCHD_RW) : "memory")
#define cpu_relax_yield() cpu_relax()
#endif
#define copy_segments(tsk, mm) do { } while (0)
arch/arm/include/asm/processor.h
-2
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@@ -82,8 +82,6 @@ unsigned long get_wchan(struct task_struct *p);
#define cpu_relax() barrier()
#endif
#define cpu_relax_yield() cpu_relax()
#define task_pt_regs(p) \
((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1)
arch/arm64/include/asm/processor.h
-2
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@@ -149,8 +149,6 @@ static inline void cpu_relax(void)
asm volatile("yield" ::: "memory");
}
#define cpu_relax_yield() cpu_relax()
/* Thread switching */
extern struct task_struct *cpu_switch_to(struct task_struct *prev,
struct task_struct *next);
arch/avr32/include/asm/processor.h
-1
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@@ -92,7 +92,6 @@ extern struct avr32_cpuinfo boot_cpu_data;
#define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3))
#define cpu_relax() barrier()
#define cpu_relax_yield() cpu_relax()
#define cpu_sync_pipeline() asm volatile("sub pc, -2" : : : "memory")
struct cpu_context {
arch/blackfin/include/asm/processor.h
-1
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@@ -92,7 +92,6 @@ unsigned long get_wchan(struct task_struct *p);
#define KSTK_ESP(tsk) ((tsk) == current ? rdusp() : (tsk)->thread.usp)
#define cpu_relax() smp_mb()
#define cpu_relax_yield() cpu_relax()
/* Get the Silicon Revision of the chip */
static inline uint32_t __pure bfin_revid(void)
arch/c6x/include/asm/processor.h
-1
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@@ -121,7 +121,6 @@ extern unsigned long get_wchan(struct task_struct *p);
#define KSTK_ESP(task) (task_pt_regs(task)->sp)
#define cpu_relax() do { } while (0)
#define cpu_relax_yield() cpu_relax()
extern const struct seq_operations cpuinfo_op;
arch/cris/include/asm/processor.h
-1
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@@ -63,7 +63,6 @@ static inline void release_thread(struct task_struct *dead_task)
#define init_stack (init_thread_union.stack)
#define cpu_relax() barrier()
#define cpu_relax_yield() cpu_relax()
void default_idle(void);
arch/frv/include/asm/processor.h
-1
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@@ -107,7 +107,6 @@ unsigned long get_wchan(struct task_struct *p);
#define KSTK_ESP(tsk) ((tsk)->thread.frame0->sp)
#define cpu_relax() barrier()
#define cpu_relax_yield() cpu_relax()
/* data cache prefetch */
#define ARCH_HAS_PREFETCH
arch/h8300/include/asm/processor.h
-1
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@@ -127,7 +127,6 @@ unsigned long get_wchan(struct task_struct *p);
#define KSTK_ESP(tsk) ((tsk) == current ? rdusp() : (tsk)->thread.usp)
#define cpu_relax() barrier()
#define cpu_relax_yield() cpu_relax()
#define HARD_RESET_NOW() ({ \
local_irq_disable(); \
arch/hexagon/include/asm/processor.h
-1
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@@ -56,7 +56,6 @@ struct thread_struct {
}
#define cpu_relax() __vmyield()
#define cpu_relax_yield() cpu_relax()
/*
* Decides where the kernel will search for a free chunk of vm space during
arch/ia64/include/asm/processor.h
-1
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@@ -547,7 +547,6 @@ ia64_eoi (void)
}
#define cpu_relax() ia64_hint(ia64_hint_pause)
#define cpu_relax_yield() cpu_relax()
static inline int
ia64_get_irr(unsigned int vector)
arch/m32r/include/asm/processor.h
-1
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@@ -133,6 +133,5 @@ unsigned long get_wchan(struct task_struct *p);
#define KSTK_ESP(tsk) ((tsk)->thread.sp)
#define cpu_relax() barrier()
#define cpu_relax_yield() cpu_relax()
#endif /* _ASM_M32R_PROCESSOR_H */
arch/m68k/include/asm/processor.h
-1
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@@ -156,6 +156,5 @@ unsigned long get_wchan(struct task_struct *p);
#define task_pt_regs(tsk) ((struct pt_regs *) ((tsk)->thread.esp0))
#define cpu_relax() barrier()
#define cpu_relax_yield() cpu_relax()
#endif
arch/metag/include/asm/processor.h
-1
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@@ -152,7 +152,6 @@ unsigned long get_wchan(struct task_struct *p);
#define user_stack_pointer(regs) ((regs)->ctx.AX[0].U0)
#define cpu_relax() barrier()
#define cpu_relax_yield() cpu_relax()
extern void setup_priv(void);
arch/microblaze/include/asm/processor.h
-1
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@@ -22,7 +22,6 @@
extern const struct seq_operations cpuinfo_op;
# define cpu_relax() barrier()
# define cpu_relax_yield() cpu_relax()
#define task_pt_regs(tsk) \
(((struct pt_regs *)(THREAD_SIZE + task_stack_page(tsk))) - 1)
arch/mips/include/asm/processor.h
-1
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@@ -389,7 +389,6 @@ unsigned long get_wchan(struct task_struct *p);
#define KSTK_STATUS(tsk) (task_pt_regs(tsk)->cp0_status)
#define cpu_relax() barrier()
#define cpu_relax_yield() cpu_relax()
/*
* Return_address is a replacement for __builtin_return_address(count)
arch/mn10300/include/asm/processor.h
-1
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@@ -69,7 +69,6 @@ extern void print_cpu_info(struct mn10300_cpuinfo *);
extern void dodgy_tsc(void);
#define cpu_relax() barrier()
#define cpu_relax_yield() cpu_relax()
/*
* User space process size: 1.75GB (default).
arch/nios2/include/asm/processor.h
-1
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@@ -88,7 +88,6 @@ extern unsigned long get_wchan(struct task_struct *p);
#define KSTK_ESP(tsk) ((tsk)->thread.kregs->sp)
#define cpu_relax() barrier()
#define cpu_relax_yield() cpu_relax()
#endif /* __ASSEMBLY__ */
arch/openrisc/include/asm/processor.h
-1
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@@ -92,7 +92,6 @@ extern unsigned long thread_saved_pc(struct task_struct *t);
#define init_stack (init_thread_union.stack)
#define cpu_relax() barrier()
#define cpu_relax_yield() cpu_relax()
#endif /* __ASSEMBLY__ */
#endif /* __ASM_OPENRISC_PROCESSOR_H */

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