Commit-ID: 94cdda6b98b3708f04f426204542aa69d4780fa9
Gitweb: http://git.kernel.org/tip/94cdda6b98b3708f04f426204542aa69d4780fa9
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Thu, 7 May 2015 17:27:23 -0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Fri, 8 May 2015 16:05:05 -0300
perf tools: Move sparc barrier.h stuff to tools/arch/sparc/include/asm/barrier.h
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 <adrian.hunter@xxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Don Zickus <dzickus@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-f0d04b9x63grt30nahpw9ei0@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/arch/sparc/include/asm/barrier.h | 8 ++++
tools/arch/sparc/include/asm/barrier_32.h | 6 +++
.../arch}/sparc/include/asm/barrier_64.h | 47 +++-------------------
tools/include/asm/barrier.h | 2 +
tools/perf/MANIFEST | 3 ++
tools/perf/perf-sys.h | 9 -----
6 files changed, 25 insertions(+), 50 deletions(-)
diff --git a/tools/arch/sparc/include/asm/barrier.h b/tools/arch/sparc/include/asm/barrier.h
new file mode 100644
index 0000000..8c017b3
--- /dev/null
+++ b/tools/arch/sparc/include/asm/barrier.h
@@ -0,0 +1,8 @@
+#ifndef ___TOOLS_LINUX_ASM_SPARC_BARRIER_H
+#define ___TOOLS_LINUX_ASM_SPARC_BARRIER_H
+#if defined(__sparc__) && defined(__arch64__)
+#include "barrier_64.h"
+#else
+#include "barrier_32.h"
+#endif
+#endif
diff --git a/tools/arch/sparc/include/asm/barrier_32.h b/tools/arch/sparc/include/asm/barrier_32.h
new file mode 100644
index 0000000..c5eadd0
--- /dev/null
+++ b/tools/arch/sparc/include/asm/barrier_32.h
@@ -0,0 +1,6 @@
+#ifndef __TOOLS_PERF_SPARC_BARRIER_H
+#define __TOOLS_PERF_SPARC_BARRIER_H
+
+#include <asm-generic/barrier.h>
+
+#endif /* !(__TOOLS_PERF_SPARC_BARRIER_H) */
diff --git a/arch/sparc/include/asm/barrier_64.h b/tools/arch/sparc/include/asm/barrier_64.h
similarity index 55%
copy from arch/sparc/include/asm/barrier_64.h
copy to tools/arch/sparc/include/asm/barrier_64.h
index 7664894..9a7d732 100644
--- a/arch/sparc/include/asm/barrier_64.h
+++ b/tools/arch/sparc/include/asm/barrier_64.h
@@ -1,7 +1,9 @@
-#ifndef __SPARC64_BARRIER_H
-#define __SPARC64_BARRIER_H
+#ifndef __TOOLS_LINUX_SPARC64_BARRIER_H
+#define __TOOLS_LINUX_SPARC64_BARRIER_H
-/* These are here in an effort to more fully work around Spitfire Errata
+/* Copied from the kernel sources to tools/:
+ *
+ * These are here in an effort to more fully work around Spitfire Errata
* #51. Essentially, if a memory barrier occurs soon after a mispredicted
* branch, the chip can stop executing instructions until a trap occurs.
* Therefore, if interrupts are disabled, the chip can hang forever.
@@ -37,41 +39,4 @@ do { __asm__ __volatile__("ba,pt %%xcc, 1f\n\t" \
#define rmb() __asm__ __volatile__("":::"memory")
#define wmb() __asm__ __volatile__("":::"memory")
-#define dma_rmb() rmb()
-#define dma_wmb() wmb()
-
-#define set_mb(__var, __value) \
- do { __var = __value; membar_safe("#StoreLoad"); } while(0)
-
-#ifdef CONFIG_SMP
-#define smp_mb() mb()
-#define smp_rmb() rmb()
-#define smp_wmb() wmb()
-#else
-#define smp_mb() __asm__ __volatile__("":::"memory")
-#define smp_rmb() __asm__ __volatile__("":::"memory")
-#define smp_wmb() __asm__ __volatile__("":::"memory")
-#endif
-
-#define read_barrier_depends() do { } while (0)
-#define smp_read_barrier_depends() do { } while (0)
-
-#define smp_store_release(p, v) \
-do { \
- compiletime_assert_atomic_type(*p); \
- barrier(); \
- ACCESS_ONCE(*p) = (v); \
-} while (0)
-
-#define smp_load_acquire(p) \
-({ \
- typeof(*p) ___p1 = ACCESS_ONCE(*p); \
- compiletime_assert_atomic_type(*p); \
- barrier(); \
- ___p1; \
-})
-
-#define smp_mb__before_atomic() barrier()
-#define smp_mb__after_atomic() barrier()
-
-#endif /* !(__SPARC64_BARRIER_H) */
+#endif /* !(__TOOLS_LINUX_SPARC64_BARRIER_H) */
diff --git a/tools/include/asm/barrier.h b/tools/include/asm/barrier.h
index 1338c8a..87f6309 100644
--- a/tools/include/asm/barrier.h
+++ b/tools/include/asm/barrier.h
@@ -6,4 +6,6 @@
#include "../../arch/s390/include/asm/barrier.h"
#elif defined(__sh__)
#include "../../arch/sh/include/asm/barrier.h"
+#elif defined(__sparc__)
+#include "../../arch/sparc/include/asm/barrier.h"
#endif
diff --git a/tools/perf/MANIFEST b/tools/perf/MANIFEST
index 2ceb1b2..ee69240 100644
--- a/tools/perf/MANIFEST
+++ b/tools/perf/MANIFEST
@@ -2,6 +2,9 @@ tools/perf
tools/arch/powerpc/include/asm/barrier.h
tools/arch/s390/include/asm/barrier.h
tools/arch/sh/include/asm/barrier.h
+tools/arch/sparc/include/asm/barrier.h
+tools/arch/sparc/include/asm/barrier_32.h
+tools/arch/sparc/include/asm/barrier_64.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 7ef5e82..b3e911a 100644
--- a/tools/perf/perf-sys.h
+++ b/tools/perf/perf-sys.h
@@ -57,15 +57,6 @@
#endif
#ifdef __sparc__
-#ifdef __LP64__
-#define mb() asm volatile("ba,pt %%xcc, 1f\n" \
- "membar #StoreLoad\n" \
- "1:\n":::"memory")
-#else
-#define mb() asm volatile("":::"memory")
-#endif
-#define wmb() asm volatile("":::"memory")
-#define rmb() asm volatile("":::"memory")
#define CPUINFO_PROC {"cpu"}
#endif
--
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