From patchwork Tue Jul 30 16:22:33 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 11066093 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6851F112C for ; Tue, 30 Jul 2019 16:33:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5965028671 for ; Tue, 30 Jul 2019 16:33:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4D1A2286A1; Tue, 30 Jul 2019 16:33:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EA21B28671 for ; Tue, 30 Jul 2019 16:33:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727994AbfG3Qd2 (ORCPT ); Tue, 30 Jul 2019 12:33:28 -0400 Received: from mail-wr1-f68.google.com ([209.85.221.68]:43288 "EHLO mail-wr1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732902AbfG3Qcm (ORCPT ); Tue, 30 Jul 2019 12:32:42 -0400 Received: by mail-wr1-f68.google.com with SMTP id p13so66462911wru.10; Tue, 30 Jul 2019 09:32:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=GmdGNk4oNO4STFUUcJmXV87+bjb8OGrYJzjuXg++0eg=; b=YMR/EwvrgUn7iTeE2I0BcdmvIOc8h2UPagqrNRtz6XSKx1d4HDj8okgti2ywcWfduQ WeOSv0DL8lRGYJ6monsDZdgM3DmExNwTit4u9i8nxQczwa7yxlAY66y9sqZ7X+HS4Bfa Hh7MEQH6dOA4MfMro4mW/Wk5u4tW9Sn5dZhOwukpUQ3YWiTWo8r5RdsF/V2Q4HF6JIKs 0j1BpdPe0Oemxt559Uh/zoowFD1YHoBcyLJaBHpBVWUwmslPNJ3ZOcMTX3tJa8KBvCpN o8PW1dNxwjSJkhijdQP8DR0K2ICcXxVtOKKFPWDh8zWhpx7LeMGRGgDz+NIGp+OZbpVo Leeg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=GmdGNk4oNO4STFUUcJmXV87+bjb8OGrYJzjuXg++0eg=; b=lJmtEibUUaWIZvhg5fga1kCuxip4x8IU1f6WMhpVBgyZOgpOQtsQpNXlJWO9lG50lD e8tbs26x2uMzg/CHG7YKi59oDRvzEzkchjIJXXZPrxaIxS1JwmBp6nK1r+K5/ViH5ugD RBdbfSl6Y2k44SM/tD2zd+xqgq91rQZ5oKh2iL22Fli+gc3ZndldT7zYElvmk3S8vLZ2 EZaWRm4jPez8AG624TjN6CEYPhFzCqeePdjIrNgVUiL+8DpPlYz6B6JDgvMlqocBBDaT TDjJQFbhN3mFXeUkyB4XbyYk7UUTT8thwzfJKCgtVEx3OdjnobVCey4/gsgE+PqNcpwI Uw2A== X-Gm-Message-State: APjAAAWYb55CRAIfSSITjadCzXvWU431AiWbOQJnezXHfusxgEIbAjos OOj2NMMrmiOYEoQP9ViudseDHyWO X-Google-Smtp-Source: APXvYqyXHBWiO1COppwKmNpaAn5hNvdAM4G8Jq59l5I7Jb1x+FnRT3BqdlZXBqzfaTnwOLDDUgherg== X-Received: by 2002:adf:e552:: with SMTP id z18mr131982400wrm.45.1564504360757; Tue, 30 Jul 2019 09:32:40 -0700 (PDT) Received: from localhost.localdomain (ppp91-78-220-99.pppoe.mtu-net.ru. [91.78.220.99]) by smtp.gmail.com with ESMTPSA id c65sm64835175wma.44.2019.07.30.09.32.39 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 30 Jul 2019 09:32:40 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Jonathan Hunter , Tomeu Vizoso Cc: linux-pm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 17/20] PM / devfreq: tegra30: Increase sampling period to 16ms Date: Tue, 30 Jul 2019 19:22:33 +0300 Message-Id: <20190730162236.6063-18-digetx@gmail.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190730162236.6063-1-digetx@gmail.com> References: <20190730162236.6063-1-digetx@gmail.com> MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Increase sampling period by 4ms to get a nicer pow2 value, converting diving into shifts in the code. That's more preferable for Tegra30 that doesn't have hardware divider instructions because of older Cortex-A9 CPU. In a result boosting events are delayed by 4ms, which is not sensible in practice at all. Reviewed-by: Chanwoo Choi Signed-off-by: Dmitry Osipenko --- drivers/devfreq/tegra30-devfreq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c index 8280f96f4cb9..3543fba74b52 100644 --- a/drivers/devfreq/tegra30-devfreq.c +++ b/drivers/devfreq/tegra30-devfreq.c @@ -67,7 +67,7 @@ * translates to 2 ^ (K_VAL + 1). ex: 2 ^ (6 + 1) = 128 */ #define ACTMON_AVERAGE_WINDOW_LOG2 6 -#define ACTMON_SAMPLING_PERIOD 12 /* ms */ +#define ACTMON_SAMPLING_PERIOD 16 /* ms */ #define KHZ 1000