From f87a2f58e34857304b8a2c284d02360210186dd0 Mon Sep 17 00:00:00 2001 From: Rabin Vincent Date: Thu, 19 Feb 2015 18:56:17 +0100 Subject: [PATCH] CRIS: use generic cmpxchg.h CRIS can use asm-generic's cmpxchg.h Signed-off-by: Rabin Vincent Signed-off-by: Jesper Nilsson --- arch/cris/include/asm/Kbuild | 1 + arch/cris/include/asm/cmpxchg.h | 51 --------------------------------- 2 files changed, 1 insertion(+), 51 deletions(-) delete mode 100644 arch/cris/include/asm/cmpxchg.h diff --git a/arch/cris/include/asm/Kbuild b/arch/cris/include/asm/Kbuild index 2f2787e15b64..e189931d7992 100644 --- a/arch/cris/include/asm/Kbuild +++ b/arch/cris/include/asm/Kbuild @@ -1,6 +1,7 @@ generic-y += atomic.h generic-y += barrier.h generic-y += clkdev.h +generic-y += cmpxchg.h generic-y += cputime.h generic-y += exec.h generic-y += irq_work.h diff --git a/arch/cris/include/asm/cmpxchg.h b/arch/cris/include/asm/cmpxchg.h deleted file mode 100644 index deb9048a6003..000000000000 --- a/arch/cris/include/asm/cmpxchg.h +++ /dev/null @@ -1,51 +0,0 @@ -#ifndef __ASM_CRIS_CMPXCHG__ -#define __ASM_CRIS_CMPXCHG__ - -#include - -static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size) -{ - /* since Etrax doesn't have any atomic xchg instructions, we need to disable - irq's (if enabled) and do it with move.d's */ - unsigned long flags,temp; - local_irq_save(flags); /* save flags, including irq enable bit and shut off irqs */ - switch (size) { - case 1: - *((unsigned char *)&temp) = x; - x = *(unsigned char *)ptr; - *(unsigned char *)ptr = *((unsigned char *)&temp); - break; - case 2: - *((unsigned short *)&temp) = x; - x = *(unsigned short *)ptr; - *(unsigned short *)ptr = *((unsigned short *)&temp); - break; - case 4: - temp = x; - x = *(unsigned long *)ptr; - *(unsigned long *)ptr = temp; - break; - } - local_irq_restore(flags); /* restore irq enable bit */ - return x; -} - -#define xchg(ptr,x) \ - ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) - -#define tas(ptr) (xchg((ptr),1)) - -#include - -/* - * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make - * them available. - */ -#define cmpxchg_local(ptr, o, n) \ - ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\ - (unsigned long)(n), sizeof(*(ptr)))) -#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) - -#include - -#endif /* __ASM_CRIS_CMPXCHG__ */ -- 2.34.1