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This patch allows each architecture to add its specific assembly optimized arch_mcs_spin_lock_contended and arch_mcs_spinlock_uncontended for MCS lock and unlock functions. Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Cc: Scott J Norton <scott.norton@hp.com> Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Cc: AswinChandramouleeswaran <aswin@hp.com> Cc: George Spelvin <linux@horizon.com> Cc: Rik vanRiel <riel@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: MichelLespinasse <walken@google.com> Cc: Peter Hurley <peter@hurleysoftware.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Alex Shi <alex.shi@linaro.org> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: "Figo.zhang" <figo1802@gmail.com> Cc: "Paul E.McKenney" <paulmck@linux.vnet.ibm.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Davidlohr Bueso <davidlohr.bueso@hp.com> Cc: Waiman Long <waiman.long@hp.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Will Deacon <will.deacon@arm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matthew R Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1390347382.3138.67.camel@schen9-DESK Signed-off-by: Ingo Molnar <mingo@kernel.org>
14 lines
260 B
C
14 lines
260 B
C
#ifndef __ASM_MCS_SPINLOCK_H
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#define __ASM_MCS_SPINLOCK_H
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/*
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* Architectures can define their own:
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*
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* arch_mcs_spin_lock_contended(l)
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* arch_mcs_spin_unlock_contended(l)
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*
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* See kernel/locking/mcs_spinlock.c.
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*/
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#endif /* __ASM_MCS_SPINLOCK_H */
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