* [PATCH v3] perf: add support for the xtensa architecture
@ 2014-01-13 10:27 Baruch Siach
2014-01-13 10:46 ` Ingo Molnar
2014-01-23 17:03 ` [tip:perf/urgent] perf tools: Add " tip-bot for Baruch Siach
0 siblings, 2 replies; 4+ messages in thread
From: Baruch Siach @ 2014-01-13 10:27 UTC (permalink / raw)
To: Peter Zijlstra, Paul Mackerras, Ingo Molnar, Arnaldo Carvalho de Melo
Cc: linux-kernel, linux-xtensa, Baruch Siach
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: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
---
v2: use the "core ID" field from /proc/cpuinfo (Max Filippov)
v3: add testing and kernel dependency information (Ingo Molnar)
---
tools/perf/perf.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index b079304bd53d..e441864dbe03 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
--
1.8.5.2
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v3] perf: add support for the xtensa architecture
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:perf/urgent] perf tools: Add " tip-bot for Baruch Siach
1 sibling, 1 reply; 4+ messages in thread
From: Ingo Molnar @ 2014-01-13 10:46 UTC (permalink / raw)
To: Baruch Siach, Arnaldo Carvalho de Melo
Cc: Peter Zijlstra, Paul Mackerras, Ingo Molnar,
Arnaldo Carvalho de Melo, linux-kernel, linux-xtensa
* Baruch Siach <baruch@tkos.co.il> wrote:
> 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: Max Filippov <jcmvbkbc@gmail.com>
> Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Ingo Molnar <mingo@kernel.org>
Thanks,
Ingo
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v3] perf: add support for the xtensa architecture
2014-01-13 10:46 ` Ingo Molnar
@ 2014-01-20 10:23 ` Baruch Siach
0 siblings, 0 replies; 4+ messages in thread
From: Baruch Siach @ 2014-01-20 10:23 UTC (permalink / raw)
To: Ingo Molnar
Cc: Arnaldo Carvalho de Melo, Peter Zijlstra, Paul Mackerras,
Ingo Molnar, Arnaldo Carvalho de Melo, linux-kernel,
linux-xtensa
Hi Ingo,
On Mon, Jan 13, 2014 at 11:46:47AM +0100, Ingo Molnar wrote:
> * Baruch Siach <baruch@tkos.co.il> wrote:
> > 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: Max Filippov <jcmvbkbc@gmail.com>
> > Signed-off-by: Baruch Siach <baruch@tkos.co.il>
>
> Acked-by: Ingo Molnar <mingo@kernel.org>
Thanks. So is it going into v3.14 by any chance?
baruch
--
http://baruch.siach.name/blog/ ~. .~ Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
- baruch@tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
^ permalink raw reply [flat|nested] 4+ messages in thread
* [tip:perf/urgent] perf tools: Add support for the xtensa architecture
2014-01-13 10:27 [PATCH v3] perf: add support for the xtensa architecture Baruch Siach
2014-01-13 10:46 ` Ingo Molnar
@ 2014-01-23 17:03 ` tip-bot for Baruch Siach
1 sibling, 0 replies; 4+ messages in thread
From: tip-bot for Baruch Siach @ 2014-01-23 17:03 UTC (permalink / raw)
To: linux-tip-commits
Cc: acme, linux-kernel, paulus, mingo, hpa, mingo, a.p.zijlstra,
baruch, jcmvbkbc, tglx
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
^ permalink raw reply related [flat|nested] 4+ messages in thread
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2014-01-13 10:46 ` Ingo Molnar
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2014-01-23 17:03 ` [tip:perf/urgent] perf tools: Add " tip-bot for Baruch Siach
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