From: Adrian Hunter <adrian.hunter@intel.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Leo Yan <leo.yan@linaro.org>, James Clark <james.clark@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Mike Leach <mike.leach@linaro.org>,
John Garry <john.g.garry@oracle.com>,
Will Deacon <will@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
Ian Rogers <irogers@google.com>,
coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1 1/2] perf auxtrace: Add 'T' itrace option for timestamp trace
Date: Tue, 7 Nov 2023 09:19:10 +0200 [thread overview]
Message-ID: <2940af18-8bcd-4456-a8ed-e77cade1b160@intel.com> (raw)
In-Reply-To: <ZUlgM8pgf19UeyM9@kernel.org>
On 6/11/23 23:52, Arnaldo Carvalho de Melo wrote:
> Em Thu, Oct 19, 2023 at 01:47:15PM +0300, Adrian Hunter escreveu:
>> On 14/10/23 10:45, Leo Yan wrote:
>>> An AUX trace can contain timestamp, but in some situations, the hardware
>>> trace module (e.g. Arm CoreSight) cannot decide the traced timestamp is
>>> the same source with CPU's time, thus the decoder can not use the
>>> timestamp trace for samples.
>>>
>>> This patch introduces 'T' itrace option. If users know the platforms
>>
>> "If users know" <- how would users know? Could the kernel
>> or tools also figure it out?
>
> Adrian, I'm trying to go all the outstanding patches, do you still have
> any issues with this series?
No, although the question wasn't actually answered. I presume users
just have to try the 'T' option and see if it helps.
next prev parent reply other threads:[~2023-11-07 7:25 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-14 7:45 [PATCH v1 0/2] perf cs-etm: Add support for itrace option 'T' Leo Yan
2023-10-14 7:45 ` [PATCH v1 1/2] perf auxtrace: Add 'T' itrace option for timestamp trace Leo Yan
2023-10-19 10:31 ` James Clark
2023-10-19 11:52 ` Leo Yan
2023-10-19 10:47 ` Adrian Hunter
2023-10-19 11:17 ` James Clark
2023-11-06 21:52 ` Arnaldo Carvalho de Melo
2023-11-07 7:19 ` Adrian Hunter [this message]
2023-11-07 9:36 ` James Clark
2023-11-07 9:48 ` Leo Yan
2023-11-07 10:16 ` Adrian Hunter
2023-11-07 14:18 ` Leo Yan
2023-11-23 14:42 ` Arnaldo Carvalho de Melo
2023-10-14 7:45 ` [PATCH v1 2/2] perf cs-etm: Enable itrace option 'T' Leo Yan
2023-10-19 10:38 ` James Clark
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