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=1793654312; b=I20DWN1WbtdmVzZ/gDrkcc87SWXy5YgNMPWbuly0iuMMZly1CnwUffk166GN1TyAx/n3 gnRICYGfpteppQ9tKTfvZ85/TrLq1+aeqqC2r1rkUUK+C8j+ln+ZgGFcb2Mpa5pCUbZ+L LczXd/0sUfSNBicqB1D42YRicVegbzY7IR96rr+dCoX722YZdH/AP4c1g1V4YEub5DZIY F+yZPAnO81RzFPRVUDZUxhNr3Y7qxbWqlXYLgFiLgsLs8vYMP95JJCJeMymnqMusle140 6NjcdgCUxyErYiIzkPkc7TS/kPPPbiJw0npz/Kgpo9lkCJtxdl/IUZz98GQpb1oylbQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793654312; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=nNA7+aq8FTLWDmN2RO20dTYuNEoXh0YziQThanrGUAQ=; b=WIf/Hr8EPH1zP7ZCx3t/HYNb1XBj17nWzPckEOD0AORtVML9K3+KHp+AlT+iIJiQFaEQ N8edhl35Xzu22Oxd/Pip1gmlmrtYKNVasrqYtmdPz9uc+q2BEyKbzAzUrqDcDMSMdXvwe O5L3EPwT27m5IdgNN05uN5Qto6BtqoWXjTBObbePJ8gIEY7oIBw4LH5MG96yxic4TchtB 5zFdlMjv6wVbu1TrNpzXm3gNR5oHfYw9R7abZZLOWkXv+V8ericC+4zwEopho1D45Pgtd O4jVuHkzMIR+Gtyvp9oGyOWgW7u1/p9ymdzaC6McMZBi5BIxcxz7rEBpoLx2Sherz7w== 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=kuunQuwY; 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 BBADA606A32C for ; Mon, 2 Nov 2026 21:18:31 +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=kuunQuwY Received: by smtp.kernel.org (Postfix) with ESMTPSA id 31A151F00A17; Mon, 2 Nov 2026 21:18:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793654311; bh=nNA7+aq8FTLWDmN2RO20dTYuNEoXh0YziQThanrGUAQ=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=kuunQuwYKEhM/1l7Wu0otUjkBk5CjmyQhDIi/Zmtms0hfxOaZT7oIgblIGX9ArfVU P8M2P6+enU5mhTe9q408mGUaZB19WbnwLLrqf9hIIMLl8UqOn6+RJwiITPBJYnBoy3 xa+9KPradC9wYyJTeLneMtsPAkEU3eGRBW+PWPR/RiAXp66gZw/YlTKKXYKAjx2kbY tdraoUdjDqy4Nu2tbavbhzTtcu5ghMjHUuw6I0kWXH0sDZq0K/TtpgrzbAzgaXnsI8 fTrq9y3DZ5530CjSGLz1vHV6s5ri8Me6Loopgaht6Q0AU/czJ5WuS0yN18jwa/iKiE XyESOL2N/PpiQ== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v2 2/2] perf jevents: add amd specific device table entry metrics Reply-To: sashiko-reviews@lists.linux.dev To: "Jacob Lefkowitz" Cc: linux-perf-users@vger.kernel.org In-Reply-To: <20261102-perf-tools-next-v2-2-4d237f886710@akamai.com> References: <20261102-perf-tools-next-v2-0-4d237f886710@akamai.com> <20261102-perf-tools-next-v2-2-4d237f886710@akamai.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Mon, 02 Nov 2026 21:18:30 +0000 X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > From: Jacob Lefkowitz >=20 > Adds AMD specific device table entry metrics to perf jevents. > These metrics are only allowed on Zen 2+ processors and are > implemented using the 'amd_iommu' PMU events. >=20 > The list of metrics added are: > - lpm_iommu_dte_miss_rate > - lpm_iommu_dte_lookups >=20 > The metrics were tested with the standard 'sleep' workload: >=20 > perf stat -M iommudte --per-socket --metric-only -j -a -- sleep 10 > {"socket" : "S0", "counters" : 8, > "lookups/s lpm_iommu_dte_lookups" : "4117.3", > "% lpm_iommu_dte_miss_rate" : "0.0"} > {"socket" : "S1", "counters" : 0, > "lookups/s lpm_iommu_dte_lookups" : "none", > "% lpm_iommu_dte_miss_rate" : "none"} >=20 > Signed-off-by: Jacob Lefkowitz Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261102-perf-tools= -next-v2-0-4d237f886710@akamai.com?part=3D2