[tip:x86/idle] x86: Remove x86_test_and_clear_bit_percpu()

[tip-bot for Len Brown]

Commit-ID:  9694be731dc81fec5ad59e863fa6538878ac496a
Gitweb:     http://git.kernel.org/tip/9694be731dc81fec5ad59e863fa6538878ac496a
Author:     Len Brown <len.brown@xxxxxxxxx>
AuthorDate: Fri, 18 Nov 2016 01:23:20 -0500
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Fri, 18 Nov 2016 12:07:57 +0100

x86: Remove x86_test_and_clear_bit_percpu()

Upon removal of the "is_idle" flag, x86_test_and_clear_bit_percpu() is no
longer used.

Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
Acked-by: Ingo Molnar <mingo@xxxxxxxxxx>
Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/b334ae6819507e3dfc0a4b33ed974714d067eb4a.1479449716.git.len.brown@xxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

---
 arch/x86/include/asm/percpu.h | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index 84f58de..9fa0360 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -507,17 +507,6 @@ do {									\
 
 #endif
 
-/* This is not atomic against other CPUs -- CPU preemption needs to be off */
-#define x86_test_and_clear_bit_percpu(bit, var)				\
-({									\
-	bool old__;							\
-	asm volatile("btr %2,"__percpu_arg(1)"\n\t"			\
-		     CC_SET(c)						\
-		     : CC_OUT(c) (old__), "+m" (var)			\
-		     : "dIr" (bit));					\
-	old__;								\
-})
-
 static __always_inline bool x86_this_cpu_constant_test_bit(unsigned int nr,
                         const unsigned long __percpu *addr)
 {