From patchwork Fri Aug 19 16:25:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeremy Linton X-Patchwork-Id: 598866 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E1A54C28B2B for ; Fri, 19 Aug 2022 17:07:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350967AbiHSRHi (ORCPT ); Fri, 19 Aug 2022 13:07:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41716 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350779AbiHSRGy (ORCPT ); Fri, 19 Aug 2022 13:06:54 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 1D697CCE26; Fri, 19 Aug 2022 09:27:29 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D9071175A; Fri, 19 Aug 2022 09:26:25 -0700 (PDT) Received: from mammon-tx2.austin.arm.com (mammon-tx2.austin.arm.com [10.118.28.62]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id D06D23F66F; Fri, 19 Aug 2022 09:26:23 -0700 (PDT) From: Jeremy Linton To: linux-acpi@vger.kernel.org Cc: rafael@kernel.org, lenb@kernel.org, viresh.kumar@linaro.org, robert.moore@intel.com, punit.agrawal@bytedance.com, lukasz.luba@arm.com, ionela.voinescu@arm.com, pierre.gondois@arm.com, linux-kernel@vger.kernel.org, devel@acpica.org, linux-pm@vger.kernel.org, Jeremy Linton Subject: [PATCH v4 2/2] cpufreq: CPPC: Change FIE default Date: Fri, 19 Aug 2022 11:25:47 -0500 Message-Id: <20220819162547.141333-3-jeremy.linton@arm.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20220819162547.141333-1-jeremy.linton@arm.com> References: <20220819162547.141333-1-jeremy.linton@arm.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org FIE is mostly implemented as PCC mailboxes on arm machines. This was enabled by default without any data suggesting that it does anything but hurt system performance. Lets change the default to 'n' until hardware appears which clearly benefits. Signed-off-by: Jeremy Linton Reviewed-by: Lukasz Luba --- drivers/cpufreq/Kconfig.arm | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm index 954749afb5fe..ad66d8f15db0 100644 --- a/drivers/cpufreq/Kconfig.arm +++ b/drivers/cpufreq/Kconfig.arm @@ -22,7 +22,7 @@ config ACPI_CPPC_CPUFREQ config ACPI_CPPC_CPUFREQ_FIE bool "Frequency Invariance support for CPPC cpufreq driver" depends on ACPI_CPPC_CPUFREQ && GENERIC_ARCH_TOPOLOGY - default y + default n help This extends frequency invariance support in the CPPC cpufreq driver, by using CPPC delivered and reference performance counters.