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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-04-19 14:23:28 +0200
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-04-19 14:23:28 +0200
commitd5aeee8cb28317ef608ecac421abc4d986d585d2 (patch)
tree70ec8ed8891f26e5c58152ffca9924ea1c58fe3a /arch/mn10300/include/asm/atomic.h
parent[media] zoran: fix integer overflow in setup_window() (diff)
parentLinux 3.4-rc3 (diff)
downloadlinux-d5aeee8cb28317ef608ecac421abc4d986d585d2.tar.xz
linux-d5aeee8cb28317ef608ecac421abc4d986d585d2.zip
Merge tag 'v3.4-rc3' into staging/for_v3.5
* tag 'v3.4-rc3': (3755 commits) Linux 3.4-rc3 x86-32: fix up strncpy_from_user() sign error ARM: 7386/1: jump_label: fixup for rename to static_key ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus PCI: Fix regression in pci_restore_state(), v3 SCSI: Fix error handling when no ULD is attached ARM: OMAP: clock: cleanup CPUfreq leftovers, fix build errors ARM: dts: remove blank interrupt-parent properties ARM: EXYNOS: Fix Kconfig dependencies for device tree enabled machine files do not export kernel's NULL #define to userspace ARM: EXYNOS: Remove broken config values for touchscren for NURI board ARM: EXYNOS: set fix xusbxti clock for NURI and Universal210 boards ARM: EXYNOS: fix regulator name for NURI board ARM: SAMSUNG: make SAMSUNG_PM_DEBUG select DEBUG_LL cpufreq: OMAP: fix build errors: depends on ARCH_OMAP2PLUS sparc64: Eliminate obsolete __handle_softirq() function sparc64: Fix bootup crash on sun4v. ARM: msm: Fix section mismatches in proc_comm.c ...
Diffstat (limited to 'arch/mn10300/include/asm/atomic.h')
-rw-r--r--arch/mn10300/include/asm/atomic.h109
1 files changed, 3 insertions, 106 deletions
diff --git a/arch/mn10300/include/asm/atomic.h b/arch/mn10300/include/asm/atomic.h
index b9a8f8461262..975e1841ca64 100644
--- a/arch/mn10300/include/asm/atomic.h
+++ b/arch/mn10300/include/asm/atomic.h
@@ -12,112 +12,7 @@
#define _ASM_ATOMIC_H
#include <asm/irqflags.h>
-
-#ifndef __ASSEMBLY__
-
-#ifdef CONFIG_SMP
-#ifdef CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT
-static inline
-unsigned long __xchg(volatile unsigned long *m, unsigned long val)
-{
- unsigned long status;
- unsigned long oldval;
-
- asm volatile(
- "1: mov %4,(_AAR,%3) \n"
- " mov (_ADR,%3),%1 \n"
- " mov %5,(_ADR,%3) \n"
- " mov (_ADR,%3),%0 \n" /* flush */
- " mov (_ASR,%3),%0 \n"
- " or %0,%0 \n"
- " bne 1b \n"
- : "=&r"(status), "=&r"(oldval), "=m"(*m)
- : "a"(ATOMIC_OPS_BASE_ADDR), "r"(m), "r"(val)
- : "memory", "cc");
-
- return oldval;
-}
-
-static inline unsigned long __cmpxchg(volatile unsigned long *m,
- unsigned long old, unsigned long new)
-{
- unsigned long status;
- unsigned long oldval;
-
- asm volatile(
- "1: mov %4,(_AAR,%3) \n"
- " mov (_ADR,%3),%1 \n"
- " cmp %5,%1 \n"
- " bne 2f \n"
- " mov %6,(_ADR,%3) \n"
- "2: mov (_ADR,%3),%0 \n" /* flush */
- " mov (_ASR,%3),%0 \n"
- " or %0,%0 \n"
- " bne 1b \n"
- : "=&r"(status), "=&r"(oldval), "=m"(*m)
- : "a"(ATOMIC_OPS_BASE_ADDR), "r"(m),
- "r"(old), "r"(new)
- : "memory", "cc");
-
- return oldval;
-}
-#else /* CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT */
-#error "No SMP atomic operation support!"
-#endif /* CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT */
-
-#else /* CONFIG_SMP */
-
-/*
- * Emulate xchg for non-SMP MN10300
- */
-struct __xchg_dummy { unsigned long a[100]; };
-#define __xg(x) ((struct __xchg_dummy *)(x))
-
-static inline
-unsigned long __xchg(volatile unsigned long *m, unsigned long val)
-{
- unsigned long oldval;
- unsigned long flags;
-
- flags = arch_local_cli_save();
- oldval = *m;
- *m = val;
- arch_local_irq_restore(flags);
- return oldval;
-}
-
-/*
- * Emulate cmpxchg for non-SMP MN10300
- */
-static inline unsigned long __cmpxchg(volatile unsigned long *m,
- unsigned long old, unsigned long new)
-{
- unsigned long oldval;
- unsigned long flags;
-
- flags = arch_local_cli_save();
- oldval = *m;
- if (oldval == old)
- *m = new;
- arch_local_irq_restore(flags);
- return oldval;
-}
-
-#endif /* CONFIG_SMP */
-
-#define xchg(ptr, v) \
- ((__typeof__(*(ptr))) __xchg((unsigned long *)(ptr), \
- (unsigned long)(v)))
-
-#define cmpxchg(ptr, o, n) \
- ((__typeof__(*(ptr))) __cmpxchg((unsigned long *)(ptr), \
- (unsigned long)(o), \
- (unsigned long)(n)))
-
-#define atomic_xchg(ptr, v) (xchg(&(ptr)->counter, (v)))
-#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new)))
-
-#endif /* !__ASSEMBLY__ */
+#include <asm/cmpxchg.h>
#ifndef CONFIG_SMP
#include <asm-generic/atomic.h>
@@ -269,6 +164,8 @@ static inline void atomic_dec(atomic_t *v)
c; \
})
+#define atomic_xchg(ptr, v) (xchg(&(ptr)->counter, (v)))
+#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new)))
/**
* atomic_clear_mask - Atomically clear bits in memory