From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793680180; b=EPknW5BIbcCz45tVLL+wIncOiBI7nTpVxmv6t5ARf49JV/8NmLJDQEhE5vVdkINChJQh Cmmb5yhlKEtZKvTif9EQglRq0lzf9KAIKC4/1rSnqbhjzbpWs71jQfk0zD+CK1p3+yibJ KIITWZlnbEP4EAUirDqQREibBlyhcKC+66rh4y4la1mOJEPqqZEij7Yf2YJYIiI23+ioM cpen0KiiFUOeNW3MzrovQvysd60fRkwyee/ujk246aJivwNAJQ68iqoPGZitBVBuxMn/W SNF6KDuJRuIG9T+0wMWbb6QjMpgKOqmb2pIbExuearImc56ttr1LM83TV4wODcHF3XA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793680180; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=vbxLDaLyl2sSZZzYQssJic67RMxf3qaVW7BCf7PINWc=; b=yoOPnz4tHunWMtez6svkFkFoGPV75vC+dgH+vWPW7t+8eojx2zwt6kurgMy9FjIxfyDZ Ms/VaTF5ROhjlr73hVdX9b/PkzYpzm0AA682AVSmMs5TaY/9bSuALFS+tluebHRiU4p2E bs1nSOYzlaba//MOSGt6r2XHMikp5C0ihTHGo970Y+BXK2PJMxQIfCLY1pR3yRKvq6Vi+ a+ooiXpeOVdO6U3vdNTnpodXCgG+lU992cH99r4nz67bYekZzE3lbYzzF284/hM0fcojq U0ZrM4p7G7NVjIhRDENAaBKqY1jOkumc2mNZFjOSJGcN8c+q4GnIo6P/qBJHIvohOlg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b="jw/GlIWW"; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9B4D8606A324 for ; Tue, 3 Nov 2026 04:29:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=jw/GlIWW Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0992D1F000C1; Tue, 3 Nov 2026 04:29:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793680180; bh=vbxLDaLyl2sSZZzYQssJic67RMxf3qaVW7BCf7PINWc=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=jw/GlIWW3nB3pDh6z91MUmGPyvr09ZKalLXrhc2Vv5PQsChpP5pI9XCU3/8grJ6a8 wZq2fOCcEkLzBbxTliu6LGBM1+AUVJwEkArMjJtxY/n2GGttWZduz0bOg23fniBgcB N0rfO5SMAJ6yK6p4z2u7SJPxAS53c0Bl3CufaSIAzTbupQy8byuomUlfgCIp0crGiS vI/08X3MokH7KlkacnpAXnQwHHc57fbDtHtaqjuQwD2fwjQ2MR3/bUdnJXPHi5aQFd R4mdn7HNjPx9oa0T8vz1UkJsf3Y6EQ02EfjTG7WSemdlPHpDoFoaCTYAvxU4zrXy5b YxB8anKbsbHWQ== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v16 2/3] perf: Add Raspberry Pi BCM2835 AXI PMU driver Reply-To: sashiko-reviews@lists.linux.dev To: "Ian Rogers" Cc: linux-perf-users@vger.kernel.org In-Reply-To: <20261103041416.2940213-3-irogers@google.com> References: <20261103041416.2940213-1-irogers@google.com> <20261103041416.2940213-3-irogers@google.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Tue, 03 Nov 2026 04:29:39 +0000 X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > Add a PMU driver for the Raspberry Pi AXI performance monitors. It > provides access to the System and VideoCore performance counters on > Broadcom BCM2835 and BCM2711 platforms natively through the perf > subsystem. >=20 > The driver implements bus-watcher refcounting, group validation, CPU > hotplug migration, and sysfs event aliases mapping hardware-specific > events to AXI pipelines (such as DMA, V3D, HVS, and ISP). Memory-mapped > endpoints for the primary System bus are read synchronously, while the > VideoCore VPU monitor is polled asynchronously in process context via a > single bulk Raspberry Pi firmware mailbox read across all active bus > watchers. >=20 > Co-developed-by: Dom Cobley > Signed-off-by: Dom Cobley > Signed-off-by: Ian Rogers Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261103041416.2940= 213-1-irogers@google.com?part=3D2