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Subject[PATCH 09/30] perf tools: Move s390 barrier.h stuff to tools/arch/s390/include/asm/barrier.h
Date
From: Arnaldo Carvalho de Melo <acme@redhat.com>

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@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-zv4x77074resrkl4ayzf5e7d@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
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 <schwidefsky@de.ibm.com>
+ */
+
+#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


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