From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: Leo Yan <leo.yan@linaro.org>
Cc: "Suzuki K. Poulose" <suzuki.poulose@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Coresight ML <coresight@lists.linaro.org>,
Peter Zijlstra <peterz@infradead.org>,
Mike Leach <mike.leach@arm.com>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v2 00/16] coresight: Add support for CPU-wide trace scenarios
Date: Wed, 27 Mar 2019 08:40:18 -0600 [thread overview]
Message-ID: <CANLsYkxNXxc=y_0JnMcopUoCWQVVu7LtJ=9GDWKh4LqgBoMGfA@mail.gmail.com> (raw)
In-Reply-To: <20190327075251.GC13559@leoy-ThinkPad-X240s>
On Wed, 27 Mar 2019 at 01:52, Leo Yan <leo.yan@linaro.org> wrote:
>
> On Mon, Mar 25, 2019 at 03:56:16PM -0600, Mathieu Poirier wrote:
> > This is the second revision of a patchset that adds support for CPU-wide
> > trace scenarios and as such, it is now possible to issue the following
> > commands:
> >
> > # perf record -e cs_etm/@20070000.etr/ -C 2,3 $COMMAND
> > # perf record -e cs_etm/@20070000.etr/ -a $COMMAND
> >
> > The solution is designed to work for both 1:1 and N:1 source/sink
> > topologies, though the former hasn't been tested for lack of access to HW.
> >
> > Most of the changes revolve around allowing more than one event to use
> > a sink when operated from perf. More specifically the first event to
> > use a sink switches it on while the last one is tasked to aggregate traces
> > and switching off the device.
> >
> > This is the kernel part of the solution, with the user space portion to be
> > released in a later set. All patches (user and kernel) have been rebased
> > on v5.1-rc2 and are hosted here[1]. Everything has been tested on Juno and
> > 410c dragonboard platforms.
>
> FWIW, gave the testing on my Hikey620 board and these patches also work
> well with below commands:
>
> # perf record -e cs_etm/@f6402000.etf/ -a uname
> # perf record -e cs_etm/@f6402000.etf/ -C 0,4 uname
>
> # perf record -e cs_etm/@f6404000.etr/ -a uname
> # perf record -e cs_etm/@f6404000.etr/ -C 1,2,7 uname
Should I add your "Tested-by:" to the patches then?
>
> P.s. just note here and this is off topic to this patch set, the
> 'perf report' command took below time for decoding ~4MB CoreSight trace
> data on my Hikey board, seems we can take a look for decoding speed
> optimization later:
>
> # time perf report --vmlinux /mnt/linux-kernel/linux-next/vmlinux
> real 2m11.153s
> user 1m47.979s
> sys 0m0.204s
>
> Thanks,
> Leo Yan
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-03-27 14:40 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-25 21:56 [PATCH v2 00/16] coresight: Add support for CPU-wide trace scenarios Mathieu Poirier
2019-03-25 21:56 ` [PATCH v2 01/16] coresight: pmu: Adding ITRACE property to cs_etm PMU Mathieu Poirier
2019-03-25 21:56 ` [PATCH v2 02/16] coresight: etm4x: Add kernel configuration for CONTEXTID Mathieu Poirier
2019-03-26 11:59 ` Suzuki K Poulose
2019-03-25 21:56 ` [PATCH v2 03/16] coresight: etm4x: Configure tracers to emit timestamps Mathieu Poirier
2019-03-26 11:53 ` Suzuki K Poulose
2019-03-25 21:56 ` [PATCH v2 04/16] coresight: Adding return code to sink::disable() operation Mathieu Poirier
2019-03-26 14:55 ` Suzuki K Poulose
2019-03-25 21:56 ` [PATCH v2 05/16] coresight: Move reference counting inside sink drivers Mathieu Poirier
2019-03-26 15:04 ` Suzuki K Poulose
2019-03-25 21:56 ` [PATCH v2 06/16] coresight: Properly address errors in sink::disable() functions Mathieu Poirier
2019-03-25 21:56 ` [PATCH v2 07/16] coresight: Properly address concurrency in sink::update() functions Mathieu Poirier
2019-03-25 21:56 ` [PATCH v2 08/16] coresight: perf: Clean up function etm_setup_aux() Mathieu Poirier
2019-03-25 21:56 ` [PATCH v2 09/16] coresight: perf: Refactor function free_event_data() Mathieu Poirier
2019-03-26 15:07 ` Suzuki K Poulose
2019-03-25 21:56 ` [PATCH v2 10/16] coresight: Communicate perf event to sink buffer allocation function Mathieu Poirier
2019-03-26 15:12 ` Suzuki K Poulose
2019-03-25 21:56 ` [PATCH v2 11/16] coresight: tmc-etr: Refactor function tmc_etr_setup_perf_buf() Mathieu Poirier
2019-03-26 15:29 ` Suzuki K Poulose
2019-03-26 16:29 ` Mathieu Poirier
2019-03-25 21:56 ` [PATCH v2 12/16] coresight: tmc-etr: Introduce the notion of process ID to ETR devices Mathieu Poirier
2019-03-26 16:46 ` Suzuki K Poulose
2019-03-26 18:06 ` Mathieu Poirier
2019-03-25 21:56 ` [PATCH v2 13/16] coresight: tmc-etr: Allow events to use the same ETR buffer Mathieu Poirier
2019-03-26 16:18 ` Suzuki K Poulose
2019-03-26 17:55 ` Mathieu Poirier
2019-03-27 11:32 ` Suzuki K Poulose
2019-03-27 17:01 ` Mathieu Poirier
2019-04-01 13:01 ` Suzuki K Poulose
2019-04-03 2:13 ` Mathieu Poirier
2019-03-30 15:43 ` Leo Yan
2019-04-01 7:29 ` Mathieu Poirier
2019-03-25 21:56 ` [PATCH v2 14/16] coresight: tmc-etr: Add support for CPU-wide trace scenarios Mathieu Poirier
2019-03-25 21:56 ` [PATCH v2 15/16] coresight: tmc-etf: " Mathieu Poirier
2019-03-25 21:56 ` [PATCH v2 16/16] coresight: etb10: " Mathieu Poirier
2019-03-27 7:52 ` [PATCH v2 00/16] coresight: " Leo Yan
2019-03-27 14:40 ` Mathieu Poirier [this message]
2019-03-27 14:44 ` Leo Yan
2019-04-11 18:52 ` Robert Walker
2019-04-16 19:37 ` Mathieu Poirier
2019-04-24 16:22 ` Robert Walker
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CANLsYkxNXxc=y_0JnMcopUoCWQVVu7LtJ=9GDWKh4LqgBoMGfA@mail.gmail.com' \
--to=mathieu.poirier@linaro.org \
--cc=alexander.shishkin@linux.intel.com \
--cc=coresight@lists.linaro.org \
--cc=leo.yan@linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=mike.leach@arm.com \
--cc=peterz@infradead.org \
--cc=suzuki.poulose@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).