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Message-ID: <20130102000935.GB13678@google.com> Date: Tue, 1 Jan 2013 16:09:35 -0800 From: Michel Lespinasse <walken@...gle.com> To: Rik van Riel <riel@...hat.com> Cc: linux-kernel@...r.kernel.org, aquini@...hat.com, lwoodman@...hat.com, jeremy@...p.org, Jan Beulich <JBeulich@...ell.com>, Thomas Gleixner <tglx@...utronix.de>, Eric Dumazet <edumazet@...gle.com>, Tom Herbert <therbert@...gle.com> Subject: [PATCH 1/2] x86,smp: simplify __ticket_spin_lock Just cosmetic - avoid an unnecessary goto construct Signed-off-by: Michel Lespinasse <walken@...gle.com> --- arch/x86/include/asm/spinlock.h | 7 ++----- 1 files changed, 2 insertions(+), 5 deletions(-) diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h index 2a45eb0cdb2c..19e8a36b3b83 100644 --- a/arch/x86/include/asm/spinlock.h +++ b/arch/x86/include/asm/spinlock.h @@ -55,11 +55,8 @@ static __always_inline void __ticket_spin_lock(arch_spinlock_t *lock) inc = xadd(&lock->tickets, inc); - if (inc.head == inc.tail) - goto out; - - ticket_spin_lock_wait(lock, inc); - out: + if (inc.head != inc.tail) + ticket_spin_lock_wait(lock, inc); barrier(); /* make sure nothing creeps before the lock is taken */ } -- 1.7.7.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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