From: tip-bot for Baruch Siach <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: acme@redhat.com, linux-kernel@vger.kernel.org, paulus@samba.org,
mingo@redhat.com, hpa@zytor.com, mingo@kernel.org,
a.p.zijlstra@chello.nl, baruch@tkos.co.il, jcmvbkbc@gmail.com,
tglx@linutronix.de
Subject: [tip:perf/urgent] perf tools: Add support for the xtensa architecture
Date: Thu, 23 Jan 2014 09:03:47 -0800 [thread overview]
Message-ID: <tip-3a46817f674389d5fb2f4dce19fbc73ebd1976bb@git.kernel.org> (raw)
In-Reply-To: <aafcdb22f04e2d3188d2938528939481be56b649.1389608855.git.baruch@tkos.co.il>
Commit-ID: 3a46817f674389d5fb2f4dce19fbc73ebd1976bb
Gitweb: http://git.kernel.org/tip/3a46817f674389d5fb2f4dce19fbc73ebd1976bb
Author: Baruch Siach <baruch@tkos.co.il>
AuthorDate: Mon, 13 Jan 2014 12:27:35 +0200
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 20 Jan 2014 16:19:08 -0300
perf tools: Add support for the xtensa architecture
Tested using kernel tracepoints on a QEMU simulated environment.
Kernel support for perf depends on the patch "xtensa: enable
HAVE_PERF_EVENTS", which is scheduled for v3.14.
Hardware performance counters are not supported under xtensa yet.
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: linux-xtensa@linux-xtensa.org
Link: http://lkml.kernel.org/r/aafcdb22f04e2d3188d2938528939481be56b649.1389608855.git.baruch@tkos.co.il
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/perf.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 3c2f213..7daa806 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -132,6 +132,13 @@
#define CPUINFO_PROC "CPU"
#endif
+#ifdef __xtensa__
+#define mb() asm volatile("memw" ::: "memory")
+#define wmb() asm volatile("memw" ::: "memory")
+#define rmb() asm volatile("" ::: "memory")
+#define CPUINFO_PROC "core ID"
+#endif
+
#define barrier() asm volatile ("" ::: "memory")
#ifndef cpu_relax
prev parent reply other threads:[~2014-01-23 17:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-13 10:27 [PATCH v3] perf: add support for the xtensa architecture Baruch Siach
2014-01-13 10:46 ` Ingo Molnar
2014-01-20 10:23 ` Baruch Siach
2014-01-23 17:03 ` tip-bot for Baruch Siach [this message]
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