From patchwork Thu Oct 15 20:47:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lina Iyer X-Patchwork-Id: 11840169 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3E24D1580 for ; Thu, 15 Oct 2020 20:47:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 148782074D for ; Thu, 15 Oct 2020 20:47:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="Xym2r51q" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392379AbgJOUrv (ORCPT ); Thu, 15 Oct 2020 16:47:51 -0400 Received: from m42-4.mailgun.net ([69.72.42.4]:58111 "EHLO m42-4.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732789AbgJOUrv (ORCPT ); Thu, 15 Oct 2020 16:47:51 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1602794870; h=Content-Transfer-Encoding: MIME-Version: Message-Id: Date: Subject: Cc: To: From: Sender; bh=r3WHMRMHgR7Lvx7tsULSQ72DDb6bB3QxooQxLhsgZew=; b=Xym2r51qra4s68to87WIJxh3Y4mN+iEjCxLngaG04rMm4AEGwqxzw55jI9XbjnkrKfd82rv7 MorU4zRY0pjlPCJ3Z2xoZlM1JFvR1ViBmHHt0g1zsmaEugaAx+M4mtcAy4ysmtZYC/A+QeBj 8OnwOYiFzxF1zVd4p9EU0gPB7uc= X-Mailgun-Sending-Ip: 69.72.42.4 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n01.prod.us-east-1.postgun.com with SMTP id 5f88b55fbfed2afaa63c5c5b (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 15 Oct 2020 20:47:27 GMT Sender: ilina=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 3D864C433CB; Thu, 15 Oct 2020 20:47:27 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=ALL_TRUSTED,BAYES_00,SPF_FAIL, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from codeaurora.org (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: ilina) by smtp.codeaurora.org (Postfix) with ESMTPSA id 58905C433C9; Thu, 15 Oct 2020 20:47:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 58905C433C9 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=ilina@codeaurora.org From: Lina Iyer To: rjw@rjwysocki.net, ulf.hansson@linaro.org, linux-pm@vger.kernel.org Cc: linux-arm-msm@vger.kernel.org, Lina Iyer Subject: [PATCH v3] PM / Domains: enable domain idle state accounting Date: Thu, 15 Oct 2020 14:47:22 -0600 Message-Id: <20201015204722.18764-1-ilina@codeaurora.org> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org To enable better debug of PM domains, let's keep a track of the success and rejections in entering each domain idle state. This statistics is exported in debugfs when reading the idle_states node, associated with each PM domain. Signed-off-by: Lina Iyer --- Changes in v3: - Rebased on top of mainline --- drivers/base/power/domain.c | 10 +++++++--- include/linux/pm_domain.h | 2 ++ 2 files changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 2cb5e04cf86c..20ecc1a7113c 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -559,12 +559,15 @@ static int genpd_power_off(struct generic_pm_domain *genpd, bool one_dev_on, * happen very often). */ ret = _genpd_power_off(genpd, true); - if (ret) + if (ret) { + genpd->states[genpd->state_idx].rejected++; return ret; + } } genpd->status = GPD_STATE_POWER_OFF; genpd_update_accounting(genpd); + genpd->states[genpd->state_idx].usage++; list_for_each_entry(link, &genpd->child_links, child_node) { genpd_sd_counter_dec(link->parent); @@ -2932,7 +2935,7 @@ static int idle_states_show(struct seq_file *s, void *data) if (ret) return -ERESTARTSYS; - seq_puts(s, "State Time Spent(ms)\n"); + seq_puts(s, "State Time Spent(ms) Usage Rejected\n"); for (i = 0; i < genpd->state_count; i++) { ktime_t delta = 0; @@ -2944,7 +2947,8 @@ static int idle_states_show(struct seq_file *s, void *data) msecs = ktime_to_ms( ktime_add(genpd->states[i].idle_time, delta)); - seq_printf(s, "S%-13i %lld\n", i, msecs); + seq_printf(s, "S%-13i %-14lld %-14llu %llu\n", i, msecs, + genpd->states[i].usage, genpd->states[i].rejected); } genpd_unlock(genpd); diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index ee11502a575b..1d9a8de6b7ac 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -82,6 +82,8 @@ struct genpd_power_state { s64 power_off_latency_ns; s64 power_on_latency_ns; s64 residency_ns; + u64 usage; + u64 rejected; struct fwnode_handle *fwnode; ktime_t idle_time; void *data;