0160fb177d
arch_{read,spin,write}_relax() are defined as cpu_relax() by the core
code, so architectures that can't do better (i.e. most of them) don't
need to bother with the dummy definitions.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: paulmck@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1507055129-12300-3-git-send-email-will.deacon@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
22 lines
479 B
C
22 lines
479 B
C
/* spinlock.h: 64-bit Sparc spinlock support.
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*
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* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
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*/
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#ifndef __SPARC64_SPINLOCK_H
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#define __SPARC64_SPINLOCK_H
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#ifndef __ASSEMBLY__
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#include <asm/processor.h>
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#include <asm/barrier.h>
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#include <asm/qrwlock.h>
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#include <asm/qspinlock.h>
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#define arch_read_lock_flags(p, f) arch_read_lock(p)
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#define arch_write_lock_flags(p, f) arch_write_lock(p)
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#endif /* !(__ASSEMBLY__) */
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#endif /* !(__SPARC64_SPINLOCK_H) */
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