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Wed, 12 Aug 2026 17:06:08 -0700 (PDT) X-Received: by 2002:a05:6214:53ca:b0:8f0:5b55:1f64 with SMTP id 6a1803df08f44-90a80b8a548mr18380416d6.20.1786579568260; Wed, 12 Aug 2026 17:06:08 -0700 (PDT) Received: from [10.67.48.245] ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-90a817bbb3fsm2968896d6.15.2026.08.12.17.06.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 12 Aug 2026 17:06:06 -0700 (PDT) Message-ID: Date: Wed, 12 Aug 2026 17:06:05 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 1/2] perf: Add Raspberry Pi BCM2835 AXI PMU driver To: Ian Rogers , linux-perf-users@vger.kernel.org, linux-rpi-kernel@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com, u.kleine-koenig@baylibre.com, will@kernel.org References: <20260812230145.2644281-1-irogers@google.com> <20260812230800.2646749-1-irogers@google.com> <20260812230800.2646749-2-irogers@google.com> Content-Language: en-US, fr-FR From: Florian Fainelli Autocrypt: addr=florian.fainelli@broadcom.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260812_170612_046563_F8C38455 X-CRM114-Status: GOOD ( 14.35 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 8/12/26 16:07, Ian Rogers wrote: > This commit adds an uncore performance monitoring unit (PMU) driver > for Broadcom BCM2835-BCM2711 AXI system monitors and VideoCore VPU firmware > mailbox monitors found on Raspberry Pi 1 through 4. Missing generative AI tags here? > > Signed-off-by: Ian Rogers > --- > drivers/perf/Kconfig | 10 + > drivers/perf/Makefile | 1 + > drivers/perf/rpi_axi_pmu.c | 1793 ++++++++++++++++++++++++++++++++++++ > 3 files changed, 1804 insertions(+) > create mode 100644 drivers/perf/rpi_axi_pmu.c This is more applicable to the second part of the patch, but the dependency on the Raspberry Pi firmware interface bothers me a bit. We have the AXI PMU blocks available on the 7712/77122 chips which are sister chips to the 2712, we don't run the Raspberry Pi firmware on those systems however. Once your patches land, I will see if I can get generative AI to help me add support for the two AXI PMUs that exist on those chips. Thanks for doing this! -- Florian