From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754230AbaHNR2q (ORCPT ); Thu, 14 Aug 2014 13:28:46 -0400 Received: from g9t1613g.houston.hp.com ([15.240.0.71]:53584 "EHLO g9t1613g.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752388AbaHNR2o (ORCPT ); Thu, 14 Aug 2014 13:28:44 -0400 From: Waiman Long To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org Cc: linux-kernel@vger.kernel.org, Peter Zijlstra , Scott J Norton , Waiman Long Subject: [PATCH 2/2] rwlock, x86: delete unused asm/rwlock.h and rwlock.S Date: Thu, 14 Aug 2014 13:27:31 -0400 Message-Id: <1408037251-45918-3-git-send-email-Waiman.Long@hp.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1408037251-45918-1-git-send-email-Waiman.Long@hp.com> References: <1408037251-45918-1-git-send-email-Waiman.Long@hp.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch removes the unused asm/rwlock.h and rwlock.S files. Signed-off-by: Waiman Long --- arch/x86/include/asm/rwlock.h | 49 ----------------------------------------- arch/x86/lib/Makefile | 1 - arch/x86/lib/rwlock.S | 44 ------------------------------------ 3 files changed, 0 insertions(+), 94 deletions(-) delete mode 100644 arch/x86/include/asm/rwlock.h delete mode 100644 arch/x86/lib/rwlock.S diff --git a/arch/x86/include/asm/rwlock.h b/arch/x86/include/asm/rwlock.h deleted file mode 100644 index a5370a0..0000000 --- a/arch/x86/include/asm/rwlock.h +++ /dev/null @@ -1,49 +0,0 @@ -#ifndef _ASM_X86_RWLOCK_H -#define _ASM_X86_RWLOCK_H - -#include - -#if CONFIG_NR_CPUS <= 2048 - -#ifndef __ASSEMBLY__ -typedef union { - s32 lock; - s32 write; -} arch_rwlock_t; -#endif - -#define RW_LOCK_BIAS 0x00100000 -#define READ_LOCK_SIZE(insn) __ASM_FORM(insn##l) -#define READ_LOCK_ATOMIC(n) atomic_##n -#define WRITE_LOCK_ADD(n) __ASM_FORM_COMMA(addl n) -#define WRITE_LOCK_SUB(n) __ASM_FORM_COMMA(subl n) -#define WRITE_LOCK_CMP RW_LOCK_BIAS - -#else /* CONFIG_NR_CPUS > 2048 */ - -#include - -#ifndef __ASSEMBLY__ -typedef union { - s64 lock; - struct { - u32 read; - s32 write; - }; -} arch_rwlock_t; -#endif - -#define RW_LOCK_BIAS (_AC(1,L) << 32) -#define READ_LOCK_SIZE(insn) __ASM_FORM(insn##q) -#define READ_LOCK_ATOMIC(n) atomic64_##n -#define WRITE_LOCK_ADD(n) __ASM_FORM(incl) -#define WRITE_LOCK_SUB(n) __ASM_FORM(decl) -#define WRITE_LOCK_CMP 1 - -#endif /* CONFIG_NR_CPUS */ - -#define __ARCH_RW_LOCK_UNLOCKED { RW_LOCK_BIAS } - -/* Actual code is in asm/spinlock.h or in arch/x86/lib/rwlock.S */ - -#endif /* _ASM_X86_RWLOCK_H */ diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile index 4d4f96a..7ef9a30 100644 --- a/arch/x86/lib/Makefile +++ b/arch/x86/lib/Makefile @@ -20,7 +20,6 @@ lib-y := delay.o misc.o cmdline.o lib-y += thunk_$(BITS).o lib-y += usercopy_$(BITS).o usercopy.o getuser.o putuser.o lib-y += memcpy_$(BITS).o -lib-$(CONFIG_SMP) += rwlock.o lib-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += rwsem.o lib-$(CONFIG_INSTRUCTION_DECODER) += insn.o inat.o diff --git a/arch/x86/lib/rwlock.S b/arch/x86/lib/rwlock.S deleted file mode 100644 index 1cad221..0000000 --- a/arch/x86/lib/rwlock.S +++ /dev/null @@ -1,44 +0,0 @@ -/* Slow paths of read/write spinlocks. */ - -#include -#include -#include -#include - -#ifdef CONFIG_X86_32 -# define __lock_ptr eax -#else -# define __lock_ptr rdi -#endif - -ENTRY(__write_lock_failed) - CFI_STARTPROC - FRAME -0: LOCK_PREFIX - WRITE_LOCK_ADD($RW_LOCK_BIAS) (%__lock_ptr) -1: rep; nop - cmpl $WRITE_LOCK_CMP, (%__lock_ptr) - jne 1b - LOCK_PREFIX - WRITE_LOCK_SUB($RW_LOCK_BIAS) (%__lock_ptr) - jnz 0b - ENDFRAME - ret - CFI_ENDPROC -END(__write_lock_failed) - -ENTRY(__read_lock_failed) - CFI_STARTPROC - FRAME -0: LOCK_PREFIX - READ_LOCK_SIZE(inc) (%__lock_ptr) -1: rep; nop - READ_LOCK_SIZE(cmp) $1, (%__lock_ptr) - js 1b - LOCK_PREFIX - READ_LOCK_SIZE(dec) (%__lock_ptr) - js 0b - ENDFRAME - ret - CFI_ENDPROC -END(__read_lock_failed) -- 1.7.1