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e6be7d3115
commit 4badad352a upstream.
The optimistic spin code assumes regular stores and cmpxchg() play nice;
this is found to not be true for at least: parisc, sparc32, tile32,
metag-lock1, arc-!llsc and hexagon.
There is further wreckage, but this in particular seemed easy to
trigger, so blacklist this.
Opt in for known good archs.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: David Miller <davem@davemloft.net>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Jason Low <jason.low2@hp.com>
Cc: Waiman Long <waiman.long@hp.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: John David Anglin <dave.anglin@bell.net>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Davidlohr Bueso <davidlohr@hp.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: sparclinux@vger.kernel.org
Link: http://lkml.kernel.org/r/20140606175316.GV13930@laptop.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
229 lines
4.3 KiB
Plaintext
229 lines
4.3 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_BH
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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_BH
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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_BH
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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 && !DEBUG_MUTEXES && ARCH_SUPPORTS_ATOMIC_RMW
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