diff options
| -rw-r--r-- | tools/arch/powerpc/include/asm/barrier.h | 29 | ||||
| -rw-r--r-- | tools/include/asm/barrier.h | 2 | ||||
| -rw-r--r-- | tools/perf/MANIFEST | 1 | ||||
| -rw-r--r-- | tools/perf/perf-sys.h | 3 |
4 files changed, 32 insertions, 3 deletions
diff --git a/tools/arch/powerpc/include/asm/barrier.h b/tools/arch/powerpc/include/asm/barrier.h new file mode 100644 index 000000000000..b23aee8e6d90 --- /dev/null +++ b/tools/arch/powerpc/include/asm/barrier.h @@ -0,0 +1,29 @@ +/* + * Copied from the kernel sources: + * + * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu> + */ +#ifndef _TOOLS_LINUX_ASM_POWERPC_BARRIER_H +#define _TOOLS_LINUX_ASM_POWERPC_BARRIER_H + +/* + * Memory barrier. + * The sync instruction guarantees that all memory accesses initiated + * by this processor have been performed (with respect to all other + * mechanisms that access memory). The eieio instruction is a barrier + * providing an ordering (separately) for (a) cacheable stores and (b) + * loads and stores to non-cacheable memory (e.g. I/O devices). + * + * mb() prevents loads and stores being reordered across this point. + * rmb() prevents loads being reordered across this point. + * wmb() prevents stores being reordered across this point. + * + * *mb() variants without smp_ prefix must order all types of memory + * operations with one another. sync is the only instruction sufficient + * to do this. + */ +#define mb() __asm__ __volatile__ ("sync" : : : "memory") +#define rmb() __asm__ __volatile__ ("sync" : : : "memory") +#define wmb() __asm__ __volatile__ ("sync" : : : "memory") + +#endif /* _TOOLS_LINUX_ASM_POWERPC_BARRIER_H */ diff --git a/tools/include/asm/barrier.h b/tools/include/asm/barrier.h index 9a55c12d6f41..249f67238668 100644 --- a/tools/include/asm/barrier.h +++ b/tools/include/asm/barrier.h @@ -1,3 +1,5 @@ #if defined(__i386__) || defined(__x86_64__) #include "../../arch/x86/include/asm/barrier.h" +#elif defined(__powerpc__) +#include "../../arch/powerpc/include/asm/barrier.h" #endif diff --git a/tools/perf/MANIFEST b/tools/perf/MANIFEST index 594737a17b1b..4b3346e81d85 100644 --- a/tools/perf/MANIFEST +++ b/tools/perf/MANIFEST @@ -1,4 +1,5 @@ tools/perf +tools/arch/powerpc/include/asm/barrier.h tools/arch/x86/include/asm/barrier.h tools/scripts tools/build diff --git a/tools/perf/perf-sys.h b/tools/perf/perf-sys.h index 781d441cffd7..01c06954bf16 100644 --- a/tools/perf/perf-sys.h +++ b/tools/perf/perf-sys.h @@ -38,9 +38,6 @@ #ifdef __powerpc__ #include "../../arch/powerpc/include/uapi/asm/unistd.h" -#define mb() asm volatile ("sync" ::: "memory") -#define wmb() asm volatile ("sync" ::: "memory") -#define rmb() asm volatile ("sync" ::: "memory") #define CPUINFO_PROC {"cpu"} #endif |