From: Peter Zijlstra <peterz@infradead.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Max Filippov <jcmvbkbc@gmail.com>,
linux-xtensa@linux-xtensa.org, linux-kernel@vger.kernel.org,
Chris Zankel <chris@zankel.net>, Marc Gauthier <marc@cadence.com>,
Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@redhat.com>
Subject: Re: [PATCH v2 07/13] xtensa: implement counting and sampling perf events
Date: Fri, 7 Aug 2015 11:13:52 +0200 [thread overview]
Message-ID: <20150807091352.GD16853@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20150806194632.GC10826@kernel.org>
On Thu, Aug 06, 2015 at 04:46:32PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Sat, Jul 18, 2015 at 11:30:10AM +0300, Max Filippov escreveu:
> > Xtensa Performance Monitor Module has up to 8 32 bit wide performance
> > counters. Each counter may be enabled independently and can count any
> > single type of hardware performance events. Event counting may be enabled
> > and disabled globally (per PMM).
> > Each counter has status register with bits indicating if the counter has
> > been overflown and may be programmed to raise profiling IRQ on overflow.
> > This IRQ is used to rewind counters and allow for counting more than 2^32
> > samples for counting events and to report samples for sampling events.
> >
> > For more details see Tensilica Debug User's Guide, chapter 8
> > "Performance monitor module".
>
> Has this gone via PeterZ? I added the tools/ bits in my perf/core
> branch, will go in next pull req,
I was thinking it would go through the xtensa tree. Looks fine at a
quick glance and they can actually test it.
next prev parent reply other threads:[~2015-08-07 9:14 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-18 8:30 [PATCH v2 00/13] Support hardware perf counters on xtensa Max Filippov
2015-07-18 8:30 ` [PATCH v2 01/13] xtensa: clean up Kconfig dependencies for custom cores Max Filippov
2015-07-18 8:30 ` [PATCH v2 02/13] xtensa: keep exception/interrupt stack continuous Max Filippov
2015-07-18 8:30 ` [PATCH v2 03/13] xtensa: move oprofile stack tracing to stacktrace.c Max Filippov
2015-07-18 8:30 ` [PATCH v2 04/13] xtensa: select PERF_USE_VMALLOC for cache-aliasing configurations Max Filippov
2015-07-18 8:30 ` [PATCH v2 05/13] xtensa: add profiling IRQ type to xtensa_irq_map Max Filippov
2015-07-18 8:30 ` [PATCH v2 06/13] xtensa: count software page fault perf events Max Filippov
2015-07-18 8:30 ` [PATCH v2 07/13] xtensa: implement counting and sampling " Max Filippov
2015-08-06 19:46 ` Arnaldo Carvalho de Melo
2015-08-07 9:13 ` Peter Zijlstra [this message]
2015-08-07 12:03 ` Max Filippov
2015-08-07 13:12 ` Arnaldo Carvalho de Melo
2015-07-18 8:30 ` [PATCH v2 08/13] perf tools: xtensa: add DWARF register names Max Filippov
2015-08-07 7:22 ` [tip:perf/core] perf tools xtensa: Add " tip-bot for Max Filippov
2015-07-18 8:30 ` [PATCH v2 09/13] xtensa: reorganize irq flags tracing Max Filippov
2015-07-18 8:30 ` [PATCH v2 10/13] xtensa: fix kernel register spilling Max Filippov
2015-07-18 8:30 ` [PATCH v2 11/13] xtensa: don't touch EXC_TABLE_FIXUP in _switch_to Max Filippov
2015-07-18 8:30 ` [PATCH v2 12/13] xtensa: implement fake NMI Max Filippov
2015-07-27 14:36 ` Max Filippov
2015-07-27 15:14 ` Peter Zijlstra
2015-07-18 8:30 ` [PATCH v2 13/13] xtensa: drop unused irq_err_count Max Filippov
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