* tools/perf: Fix AAAAARGH64 memory barriers
@ 2014-01-24 15:40 Peter Zijlstra
2014-02-02 8:54 ` [tip:perf/urgent] perf tools: " tip-bot for Peter Zijlstra
0 siblings, 1 reply; 2+ messages in thread
From: Peter Zijlstra @ 2014-01-24 15:40 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo; +Cc: Will Deacon, linux-kernel, Ingo Molnar
Someone got the load and store barriers mixed up for AAAAARGH64.
Turn them the right side up.
Fixes: a94d342b9cb0 ("tools/perf: Add required memory barriers")
Reported-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
---
tools/perf/perf.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 3c2f213e979d..dd4c0d32fbae 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -100,8 +100,8 @@
#ifdef __aarch64__
#define mb() asm volatile("dmb ish" ::: "memory")
-#define wmb() asm volatile("dmb ishld" ::: "memory")
-#define rmb() asm volatile("dmb ishst" ::: "memory")
+#define wmb() asm volatile("dmb ishst" ::: "memory")
+#define rmb() asm volatile("dmb ishld" ::: "memory")
#define cpu_relax() asm volatile("yield" ::: "memory")
#endif
^ permalink raw reply [flat|nested] 2+ messages in thread* [tip:perf/urgent] perf tools: Fix AAAAARGH64 memory barriers
2014-01-24 15:40 tools/perf: Fix AAAAARGH64 memory barriers Peter Zijlstra
@ 2014-02-02 8:54 ` tip-bot for Peter Zijlstra
0 siblings, 0 replies; 2+ messages in thread
From: tip-bot for Peter Zijlstra @ 2014-02-02 8:54 UTC (permalink / raw)
To: linux-tip-commits
Cc: acme, linux-kernel, hpa, mingo, will.deacon, peterz, tglx
Commit-ID: f428ebd184c82a7914b2aa7e9f868918aaf7ea78
Gitweb: http://git.kernel.org/tip/f428ebd184c82a7914b2aa7e9f868918aaf7ea78
Author: Peter Zijlstra <peterz@infradead.org>
AuthorDate: Fri, 24 Jan 2014 16:40:02 +0100
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 29 Jan 2014 15:50:57 -0300
perf tools: Fix AAAAARGH64 memory barriers
Someone got the load and store barriers mixed up for AAAAARGH64. Turn
them the right side up.
Reported-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Fixes: a94d342b9cb0 ("tools/perf: Add required memory barriers")
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Will Deacon <will.deacon@arm.com>
Link: http://lkml.kernel.org/r/20140124154002.GF31570@twins.programming.kicks-ass.net
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/perf.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 7daa806..e84fa26 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -100,8 +100,8 @@
#ifdef __aarch64__
#define mb() asm volatile("dmb ish" ::: "memory")
-#define wmb() asm volatile("dmb ishld" ::: "memory")
-#define rmb() asm volatile("dmb ishst" ::: "memory")
+#define wmb() asm volatile("dmb ishst" ::: "memory")
+#define rmb() asm volatile("dmb ishld" ::: "memory")
#define cpu_relax() asm volatile("yield" ::: "memory")
#endif
^ permalink raw reply [flat|nested] 2+ messages in thread
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