forked from luck/tmp_suning_uos_patched
390a0c62c2
Currently, we have two different implementation of rwsem: 1) CONFIG_RWSEM_GENERIC_SPINLOCK (rwsem-spinlock.c) 2) CONFIG_RWSEM_XCHGADD_ALGORITHM (rwsem-xadd.c) As we are going to use a single generic implementation for rwsem-xadd.c and no architecture-specific code will be needed, there is no point in keeping two different implementations of rwsem. In most cases, the performance of rwsem-spinlock.c will be worse. It also doesn't get all the performance tuning and optimizations that had been implemented in rwsem-xadd.c over the years. For simplication, we are going to remove rwsem-spinlock.c and make all architectures use a single implementation of rwsem - rwsem-xadd.c. All references to RWSEM_GENERIC_SPINLOCK and RWSEM_XCHGADD_ALGORITHM in the code are removed. Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-c6x-dev@linux-c6x.org Cc: linux-m68k@lists.linux-m68k.org Cc: linux-riscv@lists.infradead.org Cc: linux-um@lists.infradead.org Cc: linux-xtensa@linux-xtensa.org Cc: linuxppc-dev@lists.ozlabs.org Cc: nios2-dev@lists.rocketboards.org Cc: openrisc@lists.librecores.org Cc: uclinux-h8-devel@lists.sourceforge.jp Link: https://lkml.kernel.org/r/20190322143008.21313-3-longman@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
254 lines
4.8 KiB
Plaintext
254 lines
4.8 KiB
Plaintext
#
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# The ARCH_INLINE foo is necessary because select ignores "depends on"
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#
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config ARCH_INLINE_SPIN_TRYLOCK
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bool
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config ARCH_INLINE_SPIN_TRYLOCK_BH
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bool
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config ARCH_INLINE_SPIN_LOCK
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bool
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config ARCH_INLINE_SPIN_LOCK_BH
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bool
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config ARCH_INLINE_SPIN_LOCK_IRQ
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bool
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config ARCH_INLINE_SPIN_LOCK_IRQSAVE
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bool
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config ARCH_INLINE_SPIN_UNLOCK
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bool
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config ARCH_INLINE_SPIN_UNLOCK_BH
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bool
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config ARCH_INLINE_SPIN_UNLOCK_IRQ
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bool
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config ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
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bool
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config ARCH_INLINE_READ_TRYLOCK
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bool
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config ARCH_INLINE_READ_LOCK
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bool
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config ARCH_INLINE_READ_LOCK_BH
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bool
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config ARCH_INLINE_READ_LOCK_IRQ
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bool
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config ARCH_INLINE_READ_LOCK_IRQSAVE
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bool
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config ARCH_INLINE_READ_UNLOCK
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bool
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config ARCH_INLINE_READ_UNLOCK_BH
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bool
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config ARCH_INLINE_READ_UNLOCK_IRQ
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bool
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config ARCH_INLINE_READ_UNLOCK_IRQRESTORE
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bool
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config ARCH_INLINE_WRITE_TRYLOCK
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bool
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config ARCH_INLINE_WRITE_LOCK
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bool
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config ARCH_INLINE_WRITE_LOCK_BH
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bool
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config ARCH_INLINE_WRITE_LOCK_IRQ
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bool
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config ARCH_INLINE_WRITE_LOCK_IRQSAVE
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bool
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config ARCH_INLINE_WRITE_UNLOCK
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bool
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config ARCH_INLINE_WRITE_UNLOCK_BH
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bool
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config ARCH_INLINE_WRITE_UNLOCK_IRQ
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bool
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config ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
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bool
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config UNINLINE_SPIN_UNLOCK
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bool
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#
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# lock_* functions are inlined when:
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# - DEBUG_SPINLOCK=n and GENERIC_LOCKBREAK=n and ARCH_INLINE_*LOCK=y
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#
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# trylock_* functions are inlined when:
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# - DEBUG_SPINLOCK=n and ARCH_INLINE_*LOCK=y
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#
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# unlock and unlock_irq functions are inlined when:
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# - DEBUG_SPINLOCK=n and ARCH_INLINE_*LOCK=y
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# or
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# - DEBUG_SPINLOCK=n and PREEMPT=n
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#
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# unlock_bh and unlock_irqrestore functions are inlined when:
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# - DEBUG_SPINLOCK=n and ARCH_INLINE_*LOCK=y
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#
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if !DEBUG_SPINLOCK
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config INLINE_SPIN_TRYLOCK
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def_bool y
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depends on ARCH_INLINE_SPIN_TRYLOCK
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config INLINE_SPIN_TRYLOCK_BH
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def_bool y
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depends on ARCH_INLINE_SPIN_TRYLOCK_BH
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config INLINE_SPIN_LOCK
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def_bool y
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depends on !GENERIC_LOCKBREAK && ARCH_INLINE_SPIN_LOCK
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config INLINE_SPIN_LOCK_BH
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def_bool y
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depends on !GENERIC_LOCKBREAK && ARCH_INLINE_SPIN_LOCK_BH
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config INLINE_SPIN_LOCK_IRQ
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def_bool y
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depends on !GENERIC_LOCKBREAK && ARCH_INLINE_SPIN_LOCK_IRQ
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config INLINE_SPIN_LOCK_IRQSAVE
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def_bool y
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depends on !GENERIC_LOCKBREAK && ARCH_INLINE_SPIN_LOCK_IRQSAVE
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config INLINE_SPIN_UNLOCK_BH
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def_bool y
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depends on ARCH_INLINE_SPIN_UNLOCK_BH
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config INLINE_SPIN_UNLOCK_IRQ
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def_bool y
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depends on !PREEMPT || ARCH_INLINE_SPIN_UNLOCK_IRQ
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config INLINE_SPIN_UNLOCK_IRQRESTORE
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def_bool y
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depends on ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
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config INLINE_READ_TRYLOCK
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def_bool y
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depends on ARCH_INLINE_READ_TRYLOCK
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config INLINE_READ_LOCK
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def_bool y
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depends on !GENERIC_LOCKBREAK && ARCH_INLINE_READ_LOCK
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config INLINE_READ_LOCK_BH
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def_bool y
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depends on !GENERIC_LOCKBREAK && ARCH_INLINE_READ_LOCK_BH
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config INLINE_READ_LOCK_IRQ
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def_bool y
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depends on !GENERIC_LOCKBREAK && ARCH_INLINE_READ_LOCK_IRQ
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config INLINE_READ_LOCK_IRQSAVE
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def_bool y
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depends on !GENERIC_LOCKBREAK && ARCH_INLINE_READ_LOCK_IRQSAVE
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config INLINE_READ_UNLOCK
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def_bool y
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depends on !PREEMPT || ARCH_INLINE_READ_UNLOCK
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config INLINE_READ_UNLOCK_BH
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def_bool y
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depends on ARCH_INLINE_READ_UNLOCK_BH
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config INLINE_READ_UNLOCK_IRQ
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def_bool y
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depends on !PREEMPT || ARCH_INLINE_READ_UNLOCK_IRQ
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config INLINE_READ_UNLOCK_IRQRESTORE
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def_bool y
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depends on ARCH_INLINE_READ_UNLOCK_IRQRESTORE
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config INLINE_WRITE_TRYLOCK
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def_bool y
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depends on ARCH_INLINE_WRITE_TRYLOCK
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config INLINE_WRITE_LOCK
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def_bool y
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depends on !GENERIC_LOCKBREAK && ARCH_INLINE_WRITE_LOCK
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config INLINE_WRITE_LOCK_BH
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def_bool y
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depends on !GENERIC_LOCKBREAK && ARCH_INLINE_WRITE_LOCK_BH
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config INLINE_WRITE_LOCK_IRQ
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def_bool y
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depends on !GENERIC_LOCKBREAK && ARCH_INLINE_WRITE_LOCK_IRQ
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config INLINE_WRITE_LOCK_IRQSAVE
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def_bool y
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depends on !GENERIC_LOCKBREAK && ARCH_INLINE_WRITE_LOCK_IRQSAVE
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config INLINE_WRITE_UNLOCK
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def_bool y
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depends on !PREEMPT || ARCH_INLINE_WRITE_UNLOCK
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config INLINE_WRITE_UNLOCK_BH
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def_bool y
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depends on ARCH_INLINE_WRITE_UNLOCK_BH
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config INLINE_WRITE_UNLOCK_IRQ
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def_bool y
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depends on !PREEMPT || ARCH_INLINE_WRITE_UNLOCK_IRQ
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config INLINE_WRITE_UNLOCK_IRQRESTORE
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def_bool y
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depends on ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
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endif
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config ARCH_SUPPORTS_ATOMIC_RMW
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bool
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config MUTEX_SPIN_ON_OWNER
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def_bool y
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depends on SMP && ARCH_SUPPORTS_ATOMIC_RMW
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config RWSEM_SPIN_ON_OWNER
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def_bool y
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depends on SMP && ARCH_SUPPORTS_ATOMIC_RMW
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config LOCK_SPIN_ON_OWNER
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def_bool y
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depends on MUTEX_SPIN_ON_OWNER || RWSEM_SPIN_ON_OWNER
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config ARCH_USE_QUEUED_SPINLOCKS
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bool
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config QUEUED_SPINLOCKS
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def_bool y if ARCH_USE_QUEUED_SPINLOCKS
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depends on SMP
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config BPF_ARCH_SPINLOCK
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bool
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config ARCH_USE_QUEUED_RWLOCKS
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bool
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config QUEUED_RWLOCKS
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def_bool y if ARCH_USE_QUEUED_RWLOCKS
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depends on SMP
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