x86/percpu: Remove unused PER_CPU() macro

Also remove now unused __percpu_mov_op.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Dennis Zhou <dennis@kernel.org>
Link: https://lkml.kernel.org/r/20200720204925.3654302-11-ndesaulniers@google.com

diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index cf2b9c2a241e8894bef347f522771cd10273cec8..a3c33b79fb8659212f637055658dad544ecbdbcb 100644 (file)
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -4,33 +4,15 @@
 
 #ifdef CONFIG_X86_64
 #define __percpu_seg           gs
-#define __percpu_mov_op                movq
 #else
 #define __percpu_seg           fs
-#define __percpu_mov_op                movl
 #endif
 
 #ifdef __ASSEMBLY__
 
-/*
- * PER_CPU finds an address of a per-cpu variable.
- *
- * Args:
- *    var - variable name
- *    reg - 32bit register
- *
- * The resulting address is stored in the "reg" argument.
- *
- * Example:
- *    PER_CPU(cpu_gdt_descr, %ebx)
- */
 #ifdef CONFIG_SMP
-#define PER_CPU(var, reg)                                              \
-       __percpu_mov_op %__percpu_seg:this_cpu_off, reg;                \
-       lea var(reg), reg
 #define PER_CPU_VAR(var)       %__percpu_seg:var
 #else /* ! SMP */
-#define PER_CPU(var, reg)      __percpu_mov_op $var, reg
 #define PER_CPU_VAR(var)       var
 #endif /* SMP */