From: Suzuki K Poulose <suzuki.poulose@arm.com>
To: Mike Leach <mike.leach@linaro.org>,
coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: mathieu.poirier@linaro.org, peterz@infradead.org,
mingo@redhat.com, acme@kernel.org,
linux-perf-users@vger.kernel.org, leo.yan@linaro.org,
quic_jinlmao@quicinc.com
Subject: Re: [PATCH v5 10/14] perf: cs-etm: Update record event to use new Trace ID protocol
Date: Tue, 8 Nov 2022 23:31:34 +0000 [thread overview]
Message-ID: <10992b96-85b1-bf1f-d7e1-994b00a507eb@arm.com> (raw)
In-Reply-To: <20221101163103.17921-11-mike.leach@linaro.org>
On 01/11/2022 16:30, Mike Leach wrote:
> Trace IDs are now dynamically allocated.
>
> Previously used the static association algorithm that is no longer
> used. The 'cpu * 2 + seed' was outdated and broken for systems with high
> core counts (>46). as it did not scale and was broken for larger
> core counts.
>
> Trace ID will now be sent in PERF_RECORD_AUX_OUTPUT_HW_ID record.
>
> Legacy ID algorithm renamed and retained for limited backward
> compatibility use.
>
> Signed-off-by: Mike Leach <mike.leach@linaro.org>
> Reviewed-by: James Clark <james.clark@arm.com>
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
next prev parent reply other threads:[~2022-11-08 23:31 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-01 16:30 [PATCH v5 00/14] coresight: Add new API to allocate trace source ID values Mike Leach
2022-11-01 16:30 ` [PATCH v5 01/14] coresight: trace-id: Add API to dynamically assign Trace " Mike Leach
2022-11-08 14:03 ` Suzuki K Poulose
2022-11-22 9:28 ` Mike Leach
2022-11-08 19:14 ` Suzuki K Poulose
2022-11-01 16:30 ` [PATCH v5 02/14] coresight: Remove obsolete Trace ID unniqueness checks Mike Leach
2022-11-01 16:30 ` [PATCH v5 03/14] coresight: perf: traceid: Add perf ID allocation and notifiers Mike Leach
2022-11-08 15:04 ` Suzuki Kuruppassery Poulose
2022-11-01 16:30 ` [PATCH v5 04/14] coresight: stm: Update STM driver to use Trace ID API Mike Leach
2022-11-01 16:30 ` [PATCH v5 05/14] coresight: etm4x: Update ETM4 " Mike Leach
2022-11-08 22:24 ` Suzuki K Poulose
2022-11-01 16:30 ` [PATCH v5 06/14] coresight: etm3x: Update ETM3 " Mike Leach
2022-11-08 22:25 ` Suzuki K Poulose
2022-11-01 16:30 ` [PATCH v5 07/14] coresight: etmX.X: stm: Remove trace_id() callback Mike Leach
2022-11-01 16:30 ` [PATCH v5 08/14] coresight: trace id: Remove legacy get trace ID function Mike Leach
2022-11-08 17:06 ` Suzuki Kuruppassery Poulose
2022-11-01 16:30 ` [PATCH v5 09/14] perf: cs-etm: Move mapping of Trace ID and cpu into helper function Mike Leach
2022-11-08 23:31 ` Suzuki K Poulose
2022-11-01 16:30 ` [PATCH v5 10/14] perf: cs-etm: Update record event to use new Trace ID protocol Mike Leach
2022-11-08 23:31 ` Suzuki K Poulose [this message]
2022-11-01 16:31 ` [PATCH v5 11/14] kernel: events: Export perf_report_aux_output_id() Mike Leach
2022-11-01 16:31 ` [PATCH v5 12/14] perf: cs-etm: Handle PERF_RECORD_AUX_OUTPUT_HW_ID packet Mike Leach
2022-11-09 12:00 ` Suzuki Kuruppassery Poulose
2022-11-01 16:31 ` [PATCH v5 13/14] coresight: events: PERF_RECORD_AUX_OUTPUT_HW_ID used for Trace ID Mike Leach
2022-11-08 22:49 ` Suzuki K Poulose
2022-11-01 16:31 ` [PATCH v5 14/14] coresight: trace-id: Add debug & test macros to Trace ID allocation Mike Leach
2022-11-09 12:07 ` Suzuki Kuruppassery Poulose
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