linux-kernel - [PATCH 3.16 49/63] locking,x86: Kill atomic_or

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Date:   Wed, 08 Jan 2020 19:43:47 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        "Ingo Molnar" <mingo@...nel.org>,
        "Peter Zijlstra" <peterz@...radead.org>,
        "Jesse Brandeburg" <jesse.brandeburg@...el.com>,
        "Linus Torvalds" <torvalds@...ux-foundation.org>
Subject: [PATCH 3.16 49/63] locking,x86: Kill atomic_or_long()

3.16.81-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Peter Zijlstra <peterz@...radead.org>

commit f6b4ecee0eb7bfa66ae8d5652105ed4da53209a3 upstream.

There are no users, kill it.

Signed-off-by: Peter Zijlstra <peterz@...radead.org>
Cc: Jesse Brandeburg <jesse.brandeburg@...el.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/20140508135851.768177189@infradead.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
[bwh: Backported to 3.16 because this function is broken after
 "x86/atomic: Fix smp_mb__{before,after}_atomic()"]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 arch/x86/include/asm/atomic.h | 15 ---------------
 1 file changed, 15 deletions(-)

--- a/arch/x86/include/asm/atomic.h
+++ b/arch/x86/include/asm/atomic.h
@@ -218,21 +218,6 @@ static inline short int atomic_inc_short
 	return *v;
 }
 
-#ifdef CONFIG_X86_64
-/**
- * atomic_or_long - OR of two long integers
- * @v1: pointer to type unsigned long
- * @v2: pointer to type unsigned long
- *
- * Atomically ORs @v1 and @v2
- * Returns the result of the OR
- */
-static inline void atomic_or_long(unsigned long *v1, unsigned long v2)
-{
-	asm(LOCK_PREFIX "orq %1, %0" : "+m" (*v1) : "r" (v2));
-}
-#endif
-
 /* These are x86-specific, used by some header files */
 #define atomic_clear_mask(mask, addr)				\
 	asm volatile(LOCK_PREFIX "andl %0,%1"			\