Messages in this thread Patch in this message | | | From | Alexander A Sverdlin <> | Subject | [PATCH 2/2] ARM: mcs_spinlock: Drop smp_wmb in arch_mcs_spin_lock_contended() | Date | Wed, 27 Jan 2021 21:01:09 +0100 |
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From: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Drop smp_wmb in arch_mcs_spin_lock_contended() after adding in into ARCH-independent code.
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com> --- arch/arm/include/asm/mcs_spinlock.h | 2 -- 1 file changed, 2 deletions(-)
diff --git a/arch/arm/include/asm/mcs_spinlock.h b/arch/arm/include/asm/mcs_spinlock.h index 529d2cf..d8fa921 100644 --- a/arch/arm/include/asm/mcs_spinlock.h +++ b/arch/arm/include/asm/mcs_spinlock.h @@ -8,8 +8,6 @@ /* MCS spin-locking. */ #define arch_mcs_spin_lock_contended(lock) \ do { \ - /* Ensure prior stores are observed before we enter wfe. */ \ - smp_mb(); \ while (!(smp_load_acquire(lock))) \ wfe(); \ } while (0) \ -- 2.10.2
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