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Message-ID: <f932e29e-ba23-4793-8c91-74665d2791ef@linaro.org>
Date: Wed, 25 Sep 2024 13:38:49 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Mao Jinlong <quic_jinlmao@...cinc.com>,
 Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>,
 Bjorn Andersson <quic_bjorande@...cinc.com>,
 Geert Uytterhoeven <geert+renesas@...der.be>,
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
 Neil Armstrong <neil.armstrong@...aro.org>, Arnd Bergmann <arnd@...db.de>,
 'NĂ­colas F . R . A . Prado'
 <nfraprado@...labora.com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] arm64: defconfig: Enable Ftrace and STM configs

On 24/09/2024 11:20, Mao Jinlong wrote:
> To make software trace sources go through STM(System Trace Module),
> need to enable STP (System Trace Protocol) protocols and stm sources.
> Refer to Documentation/trace/stm.rst. Then software trace logs can be
> captured by STM over TMC sink path. We can enable software trace(Ftrace,
> console) logs along with HW trace of coresight component. The timestamp
> of software trace logs and hw traces will be in sync which helps to
> debug.

You must answer to "why", not "what".

> 
> Changes in v3:
> - update commit message.


Changelog goes after ---



Best regards,
Krzysztof


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