From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: Leo Yan <leo.yan@linaro.org>, Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Ian Rogers <irogers@google.com>, Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
Kemeng Shi <shikemeng@huawei.com>,
"Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>,
Adrian Hunter <adrian.hunter@intel.com>,
Igor Lubashev <ilubashe@akamai.com>,
Andi Kleen <ak@linux.intel.com>,
Jin Yao <yao.jin@linux.intel.com>,
Stephane Eranian <eranian@google.com>,
James Clark <james.clark@arm.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 0/4] Perf tool: Enable Arm arch timer counter and arm-spe's timestamp
Date: Wed, 12 Aug 2020 10:06:53 -0600 [thread overview]
Message-ID: <CANLsYkzR+DSrss0dzPjMPKW+4ZGMbD9V23PLDSZAJM1-SQU0CQ@mail.gmail.com> (raw)
In-Reply-To: <20200807071620.11907-1-leo.yan@linaro.org>
Hi Arnaldo,
On Fri, 7 Aug 2020 at 01:16, Leo Yan <leo.yan@linaro.org> wrote:
>
> This patch set is to enable Arm arch timer counter and Arm SPE is the
> first customer to use arch timer counter for its timestamp.
>
> Patches 01 ~ 03 enables Arm arch timer counter in Perf tool; patch 01 is
> to retrieve arch timer's parameters from mmaped page; patch 02 provides
> APIs for the conversion between arch timer's counter and time; patch 03
> adds a test for patches 01 and 02.
>
> As the first customer to use Arm arch timer counter in perf tool, patch
> 04 is to generate sample's timestamp for ARM SPE AUX trace data.
>
> This patch set has been rebased on perf/core branch with the latest
> commit c4735d990268 ("perf evsel: Don't set
> sample_regs_intr/sample_regs_user for dummy event").
The ARM SPE perf tools code is orphan and I don't have the cycles to
pick it up. Leo has spent a lot of time in that code and as such I
suggest that he starts maintaining it, probably following the same
kind of arrangement you and I have for coresight.
Thanks,
Mathieu
>
> After changes:
>
> # perf test 67 -v
> 67: Convert perf time to arch timer counter
> --- start ---
> test child forked, pid 5463
> mmap size 528384B
> 1st event perf time 2231755083020 arch timer cnt 113097053477
> test time 2231755087460 arch timer cnt 113097053699
> 2nd event perf time 2231755090680 arch timer cnt 113097053860
> test child finished with 0
> ---- end ----
>
> Reports the SPE sample with timestamp:
>
> $ perf script -F,+time
> dd 6799 [034] 25496.733475: 1 l1d-access: ffff87f37b88 _dl_start+0x288 (/usr/lib/aarch64-linux-gnu/ld-2.28.so)
> dd 6799 [034] 25496.733475: 1 tlb-access: ffff87f37b88 _dl_start+0x288 (/usr/lib/aarch64-linux-gnu/ld-2.28.so)
> dd 6799 [034] 25496.733479: 1 l1d-access: ffff87f37c74 _dl_start+0x374 (/usr/lib/aarch64-linux-gnu/ld-2.28.so)
> dd 6799 [034] 25496.733479: 1 tlb-access: ffff87f37c74 _dl_start+0x374 (/usr/lib/aarch64-linux-gnu/ld-2.28.so)
> dd 6799 [034] 25496.733485: 1 l1d-access: ffff87f49af4 __GI___tunables_init+0x3c (/usr/lib/aarch64-linux-gnu/ld-2.28.so)
> dd 6799 [034] 25496.733485: 1 tlb-access: ffff87f49af4 __GI___tunables_init+0x3c (/usr/lib/aarch64-linux-gnu/ld-2.28.so)
>
> Changes from v1:
> * Rebased on the latest perf/core branch;
> * Added a testing for Arm timer counter conversion (Ian Rogers).
>
>
> Leo Yan (4):
> perf tools: Support Arm arch timer counter
> perf arm_arch_timer: Convert between counter and timestamp
> perf arm_arch_timer: Test conversion between counter and timestamp
> perf arm-spe: Enable timestamp with arch timer counter
>
> tools/perf/arch/arm64/include/arch-tests.h | 6 +
> tools/perf/arch/arm64/tests/Build | 1 +
> tools/perf/arch/arm64/tests/arch-tests.c | 4 +
> .../tests/perf-time-to-arch-timer-counter.c | 189 ++++++++++++++++++
> tools/perf/arch/arm64/util/Build | 1 +
> tools/perf/arch/arm64/util/arch_timer.c | 50 +++++
> tools/perf/arch/arm64/util/arm-spe.c | 17 ++
> tools/perf/util/Build | 1 +
> tools/perf/util/arm-spe.c | 16 +-
> tools/perf/util/arm-spe.h | 5 +
> tools/perf/util/arm_arch_timer.c | 28 +++
> tools/perf/util/arm_arch_timer.h | 23 +++
> 12 files changed, 339 insertions(+), 2 deletions(-)
> create mode 100644 tools/perf/arch/arm64/tests/perf-time-to-arch-timer-counter.c
> create mode 100644 tools/perf/arch/arm64/util/arch_timer.c
> create mode 100644 tools/perf/util/arm_arch_timer.c
> create mode 100644 tools/perf/util/arm_arch_timer.h
>
> --
> 2.17.1
>
next prev parent reply other threads:[~2020-08-12 16:07 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-07 7:16 [PATCH v2 0/4] Perf tool: Enable Arm arch timer counter and arm-spe's timestamp Leo Yan
2020-08-07 7:16 ` [PATCH v2 1/4] perf tools: Support Arm arch timer counter Leo Yan
2020-08-20 2:56 ` liwei (GF)
2020-08-21 9:36 ` Leo Yan
2020-08-07 7:16 ` [PATCH v2 2/4] perf arm_arch_timer: Convert between counter and timestamp Leo Yan
2020-08-20 3:05 ` liwei (GF)
2020-08-07 7:16 ` [PATCH v2 3/4] perf arm_arch_timer: Test conversion " Leo Yan
2020-08-07 7:16 ` [PATCH v2 4/4] perf arm-spe: Enable timestamp with arch timer counter Leo Yan
2020-08-12 16:06 ` Mathieu Poirier [this message]
2020-08-12 18:53 ` [PATCH v2 0/4] Perf tool: Enable Arm arch timer counter and arm-spe's timestamp Arnaldo Carvalho de Melo
2020-08-13 1:54 ` Leo Yan
2020-08-13 9:59 ` Will Deacon
2020-08-13 11:18 ` Will Deacon
2020-08-13 12:08 ` John Garry
2020-08-13 13:05 ` Arnaldo Carvalho de Melo
2020-08-13 16:17 ` Mathieu Poirier
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=CANLsYkzR+DSrss0dzPjMPKW+4ZGMbD9V23PLDSZAJM1-SQU0CQ@mail.gmail.com \
--to=mathieu.poirier@linaro.org \
--cc=acme@kernel.org \
--cc=adrian.hunter@intel.com \
--cc=ak@linux.intel.com \
--cc=alexander.shishkin@linux.intel.com \
--cc=eranian@google.com \
--cc=ilubashe@akamai.com \
--cc=irogers@google.com \
--cc=james.clark@arm.com \
--cc=jolsa@redhat.com \
--cc=leo.yan@linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=mingo@redhat.com \
--cc=namhyung@kernel.org \
--cc=naveen.n.rao@linux.vnet.ibm.com \
--cc=peterz@infradead.org \
--cc=shikemeng@huawei.com \
--cc=will@kernel.org \
--cc=yao.jin@linux.intel.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).