From: Arnaldo Carvalho de Melo <[email protected]> We will need it for atomic.h, so move it from the ad-hoc tools/perf/ place to a tools/ subset of the kernel arch/ hierarchy.
Cc: Adrian Hunter <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: David Ahern <[email protected]> Cc: Don Zickus <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/arch/s390/include/asm/barrier.h | 30 ++++++++++++++++++++++++++++++ tools/include/asm/barrier.h | 2 ++ tools/perf/MANIFEST | 1 + tools/perf/perf-sys.h | 3 --- 4 files changed, 33 insertions(+), 3 deletions(-) create mode 100644 tools/arch/s390/include/asm/barrier.h diff --git a/tools/arch/s390/include/asm/barrier.h b/tools/arch/s390/include/asm/barrier.h new file mode 100644 index 0000000..f851412 --- /dev/null +++ b/tools/arch/s390/include/asm/barrier.h @@ -0,0 +1,30 @@ +/* + * Copied from the kernel sources: + * + * Copyright IBM Corp. 1999, 2009 + * + * Author(s): Martin Schwidefsky <[email protected]> + */ + +#ifndef __TOOLS_LINUX_ASM_BARRIER_H +#define __TOOLS_LINUX_ASM_BARRIER_H + +/* + * Force strict CPU ordering. + * And yes, this is required on UP too when we're talking + * to devices. + */ + +#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES +/* Fast-BCR without checkpoint synchronization */ +#define __ASM_BARRIER "bcr 14,0\n" +#else +#define __ASM_BARRIER "bcr 15,0\n" +#endif + +#define mb() do { asm volatile(__ASM_BARRIER : : : "memory"); } while (0) + +#define rmb() mb() +#define wmb() mb() + +#endif /* __TOOLS_LIB_ASM_BARRIER_H */ diff --git a/tools/include/asm/barrier.h b/tools/include/asm/barrier.h index 249f672..7eb8894 100644 --- a/tools/include/asm/barrier.h +++ b/tools/include/asm/barrier.h @@ -2,4 +2,6 @@ #include "../../arch/x86/include/asm/barrier.h" #elif defined(__powerpc__) #include "../../arch/powerpc/include/asm/barrier.h" +#elif defined(__s390__) +#include "../../arch/s390/include/asm/barrier.h" #endif diff --git a/tools/perf/MANIFEST b/tools/perf/MANIFEST index 4b3346e..00754af 100644 --- a/tools/perf/MANIFEST +++ b/tools/perf/MANIFEST @@ -1,5 +1,6 @@ tools/perf tools/arch/powerpc/include/asm/barrier.h +tools/arch/s390/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 01c0695..bf349ea 100644 --- a/tools/perf/perf-sys.h +++ b/tools/perf/perf-sys.h @@ -42,9 +42,6 @@ #endif #ifdef __s390__ -#define mb() asm volatile("bcr 15,0" ::: "memory") -#define wmb() asm volatile("bcr 15,0" ::: "memory") -#define rmb() asm volatile("bcr 15,0" ::: "memory") #define CPUINFO_PROC {"vendor_id"} #endif -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
