From patchwork Tue Sep 3 20:37:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mario Limonciello X-Patchwork-Id: 825511 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7E02D201279; Tue, 3 Sep 2024 20:37:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725395840; cv=none; b=JYKZHwjSrCFoGC3F2evyEKheRIevkNrQI21V+z3P/HpjGzjuThAHlW1NByuVa6de6IarhNx6TXfako341i1m5cRUvsKUOqfRrWTmnRceE0mT7b9066IHBC/Xpwxd6XNPrzI39HJynfEhxIAGgpvcAoSZ7K7GPtghsmNjkRRvhaA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725395840; c=relaxed/simple; bh=UglMZej8JoFiX1K8RXVbHidL58fkydivL2IaXEJEqss=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fXNdeY80oioXL9zjisLBQBtt2dJaNxxtryc4XVHUIZLJf/uceOwnk1V/6n80r7slf2neg1YLB5zu6R/qHIg1is4wc6Hg6MwQ4ve76Cr4D00UzRiXC0/g2WB+oGu83ycspvJZ7RZFyvf7+5KEEqu4weA7cUSJoIjasnddBdF7gWk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PtyegceG; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="PtyegceG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 315C2C4CEC9; Tue, 3 Sep 2024 20:37:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1725395840; bh=UglMZej8JoFiX1K8RXVbHidL58fkydivL2IaXEJEqss=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PtyegceGDPYZhfAza6oR/FNSqeOU2Y+Zx11LaiHWJ0VkO88usaExSbTwHHc1MwEvF YUaRAkHODFw+Mr6RL2ECMBYtN8R/908hIk1JOfMY1XsHHF2/PAejT+Nlmexpmk60sD uUWXD4D+BBej8D9rXG9FSWxmYbXdf7kt7WYV5+jRziJV4lIjfQOnx+1Y8RXX/HRz1B 8r/g0NvA3fdUFQAIVB8SFg2SmiEOiudIZFUN05/seuXhp/sjmF6qrhPjNXHp4X2DP5 suJcdR88Kx416cknNHKTiST2ze/19bWsy9SwxHvPQHBng/e+qh/nP755ngYjwYGIKE MkU4jVKr1pUjw== From: Mario Limonciello To: Borislav Petkov , "Gautham R . Shenoy" , Perry Yuan Cc: x86@kernel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)), "Rafael J . Wysocki" , linux-kernel@vger.kernel.org (open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)), linux-acpi@vger.kernel.org (open list:ACPI), linux-pm@vger.kernel.org (open list:CPU FREQUENCY SCALING FRAMEWORK), Mario Limonciello Subject: [PATCH v2 11/11] amd-pstate: Add missing documentation for `amd_pstate_prefcore_ranking` Date: Tue, 3 Sep 2024 15:37:01 -0500 Message-ID: <20240903203701.2695040-12-superm1@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240903203701.2695040-1-superm1@kernel.org> References: <20240903203701.2695040-1-superm1@kernel.org> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Mario Limonciello `amd_pstate_prefcore_ranking` reflects the dynamic rankings of a CPU core based on platform conditions. Explicitly include it in the documentation. Signed-off-by: Mario Limonciello Reviewed-by: Gautham R. Shenoy --- Documentation/admin-guide/pm/amd-pstate.rst | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/Documentation/admin-guide/pm/amd-pstate.rst b/Documentation/admin-guide/pm/amd-pstate.rst index d5c050ea390dc..210a808b74ec2 100644 --- a/Documentation/admin-guide/pm/amd-pstate.rst +++ b/Documentation/admin-guide/pm/amd-pstate.rst @@ -252,7 +252,8 @@ In some ASICs, the highest CPPC performance is not the one in the ``_CPC`` table, so we need to expose it to sysfs. If boost is not active, but still supported, this maximum frequency will be larger than the one in ``cpuinfo``. On systems that support preferred core, the driver will have -different values for some cores than others. +different values for some cores than others and this will reflect the values +advertised by the platform at bootup. This attribute is read-only. ``amd_pstate_lowest_nonlinear_freq`` @@ -268,6 +269,12 @@ This attribute is read-only. Whether the platform supports the preferred core feature and it has been enabled. This attribute is read-only. +``amd_pstate_prefcore_ranking`` + +The performance ranking of the core. This number doesn't have any unit, but +larger numbers are preferred at the time of reading. This can change at +runtime based on platform conditions. This attribute is read-only. + ``energy_performance_available_preferences`` A list of all the supported EPP preferences that could be used for