From patchwork Sat Jun 1 19:22:29 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Raghavendra K T X-Patchwork-Id: 2648511 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id DA735DFE82 for ; Sat, 1 Jun 2013 19:18:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755076Ab3FATSS (ORCPT ); Sat, 1 Jun 2013 15:18:18 -0400 Received: from e28smtp01.in.ibm.com ([122.248.162.1]:51473 "EHLO e28smtp01.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754140Ab3FATSO (ORCPT ); Sat, 1 Jun 2013 15:18:14 -0400 Received: from /spool/local by e28smtp01.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Sun, 2 Jun 2013 00:41:58 +0530 Received: from d28relay01.in.ibm.com (d28relay01.in.ibm.com [9.184.220.58]) by d28dlp03.in.ibm.com (Postfix) with ESMTP id C5B02125804E; Sun, 2 Jun 2013 00:50:14 +0530 (IST) Received: from d28av05.in.ibm.com (d28av05.in.ibm.com [9.184.220.67]) by d28relay01.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r51JI1oE4587836; Sun, 2 Jun 2013 00:48:01 +0530 Received: from d28av05.in.ibm.com (loopback [127.0.0.1]) by d28av05.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r51JI693008830; Sun, 2 Jun 2013 05:18:08 +1000 Received: from [192.168.122.1] ([9.79.211.209]) by d28av05.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id r51JI2cD008729; Sun, 2 Jun 2013 05:18:03 +1000 From: Raghavendra K T To: , , , , , , Cc: linux-doc@vger.kernel.org, , Raghavendra K T , , , , , , , , , , , , , , , , , , , , Date: Sun, 02 Jun 2013 00:52:29 +0530 Message-Id: <20130601192229.5966.49935.sendpatchset@codeblue> In-Reply-To: <20130601192125.5966.35563.sendpatchset@codeblue> References: <20130601192125.5966.35563.sendpatchset@codeblue> Subject: [PATCH RFC V9 3/19] x86/ticketlock: Collapse a layer of functions X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13060119-4790-0000-0000-000008937E44 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org x86/ticketlock: Collapse a layer of functions From: Jeremy Fitzhardinge Now that the paravirtualization layer doesn't exist at the spinlock level any more, we can collapse the __ticket_ functions into the arch_ functions. Signed-off-by: Jeremy Fitzhardinge Tested-by: Attilio Rao Signed-off-by: Raghavendra K T Reviewed-by: Konrad Rzeszutek Wilk --- arch/x86/include/asm/spinlock.h | 35 +++++------------------------------ 1 file changed, 5 insertions(+), 30 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h index 4d54244..7442410 100644 --- a/arch/x86/include/asm/spinlock.h +++ b/arch/x86/include/asm/spinlock.h @@ -76,7 +76,7 @@ static __always_inline void __ticket_unlock_kick(struct arch_spinlock *lock, * in the high part, because a wide xadd increment of the low part would carry * up and contaminate the high part. */ -static __always_inline void __ticket_spin_lock(struct arch_spinlock *lock) +static __always_inline void arch_spin_lock(struct arch_spinlock *lock) { register struct __raw_tickets inc = { .tail = 1 }; @@ -96,7 +96,7 @@ static __always_inline void __ticket_spin_lock(struct arch_spinlock *lock) out: barrier(); /* make sure nothing creeps before the lock is taken */ } -static __always_inline int __ticket_spin_trylock(arch_spinlock_t *lock) +static __always_inline int arch_spin_trylock(arch_spinlock_t *lock) { arch_spinlock_t old, new; @@ -110,7 +110,7 @@ static __always_inline int __ticket_spin_trylock(arch_spinlock_t *lock) return cmpxchg(&lock->head_tail, old.head_tail, new.head_tail) == old.head_tail; } -static __always_inline void __ticket_spin_unlock(arch_spinlock_t *lock) +static __always_inline void arch_spin_unlock(arch_spinlock_t *lock) { __ticket_t next = lock->tickets.head + 1; @@ -118,46 +118,21 @@ static __always_inline void __ticket_spin_unlock(arch_spinlock_t *lock) __ticket_unlock_kick(lock, next); } -static inline int __ticket_spin_is_locked(arch_spinlock_t *lock) +static inline int arch_spin_is_locked(arch_spinlock_t *lock) { struct __raw_tickets tmp = ACCESS_ONCE(lock->tickets); return tmp.tail != tmp.head; } -static inline int __ticket_spin_is_contended(arch_spinlock_t *lock) +static inline int arch_spin_is_contended(arch_spinlock_t *lock) { struct __raw_tickets tmp = ACCESS_ONCE(lock->tickets); return (__ticket_t)(tmp.tail - tmp.head) > 1; } - -static inline int arch_spin_is_locked(arch_spinlock_t *lock) -{ - return __ticket_spin_is_locked(lock); -} - -static inline int arch_spin_is_contended(arch_spinlock_t *lock) -{ - return __ticket_spin_is_contended(lock); -} #define arch_spin_is_contended arch_spin_is_contended -static __always_inline void arch_spin_lock(arch_spinlock_t *lock) -{ - __ticket_spin_lock(lock); -} - -static __always_inline int arch_spin_trylock(arch_spinlock_t *lock) -{ - return __ticket_spin_trylock(lock); -} - -static __always_inline void arch_spin_unlock(arch_spinlock_t *lock) -{ - __ticket_spin_unlock(lock); -} - static __always_inline void arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags) {