From patchwork Wed Feb 19 10:40:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maulik Shah X-Patchwork-Id: 11391233 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 508B392A for ; Wed, 19 Feb 2020 10:40:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 314DA21D56 for ; Wed, 19 Feb 2020 10:40:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="c4U0/pVH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726949AbgBSKk6 (ORCPT ); Wed, 19 Feb 2020 05:40:58 -0500 Received: from mail26.static.mailgun.info ([104.130.122.26]:55550 "EHLO mail26.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726856AbgBSKk6 (ORCPT ); Wed, 19 Feb 2020 05:40:58 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1582108858; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=YM7FasSIeoqBY/ligxY0Vj0FIRx2784q8vfiDdf3EEY=; b=c4U0/pVHhaIfbWYPe6yepEG5eIYIxnhfmO1/FJq0S3RF9XdnuWbhHAsEBwAaGLTrFoThvS3j ZRVMTQlIYxPrBWY8DtOOX0GqIIk19aRqdXY3RMiqhTgumYd9x+9injMJ7KdNCwNeALK+oV1Y nYlDBb3XlfQEhafKRDKhbJpfqTo= X-Mailgun-Sending-Ip: 104.130.122.26 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 mxa.mailgun.org with ESMTP id 5e4d10b9.7faf98af6d18-smtp-out-n01; Wed, 19 Feb 2020 10:40:57 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id B8EC5C447AB; Wed, 19 Feb 2020 10:40:56 +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=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mkshah-linux.qualcomm.com (blr-c-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: mkshah) by smtp.codeaurora.org (Postfix) with ESMTPSA id 0C8CFC447A4; Wed, 19 Feb 2020 10:40:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 0C8CFC447A4 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=none smtp.mailfrom=mkshah@codeaurora.org From: Maulik Shah To: swboyd@chromium.org, mka@chromium.org, evgreen@chromium.org, bjorn.andersson@linaro.org Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, agross@kernel.org, dianders@chromium.org, rnayak@codeaurora.org, ilina@codeaurora.org, lsrao@codeaurora.org, Maulik Shah Subject: [PATCH v5 6/7] soc: qcom: rpmh: Update dirty flag only when data changes Date: Wed, 19 Feb 2020 16:10:09 +0530 Message-Id: <1582108810-21263-7-git-send-email-mkshah@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1582108810-21263-1-git-send-email-mkshah@codeaurora.org> References: <1582108810-21263-1-git-send-email-mkshah@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Currently rpmh ctrlr dirty flag is set for all cases regardless of data is really changed or not. Add changes to update it when data is updated to newer values. Also move dirty flag updates to happen from within cache_lock. Signed-off-by: Maulik Shah --- drivers/soc/qcom/rpmh.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/drivers/soc/qcom/rpmh.c b/drivers/soc/qcom/rpmh.c index eb0ded0..83ba4e0 100644 --- a/drivers/soc/qcom/rpmh.c +++ b/drivers/soc/qcom/rpmh.c @@ -139,20 +139,27 @@ static struct cache_req *cache_rpm_request(struct rpmh_ctrlr *ctrlr, existing: switch (state) { case RPMH_ACTIVE_ONLY_STATE: - if (req->sleep_val != UINT_MAX) + if (req->sleep_val != UINT_MAX) { req->wake_val = cmd->data; + ctrlr->dirty = true; + } break; case RPMH_WAKE_ONLY_STATE: - req->wake_val = cmd->data; + if (req->wake_val != cmd->data) { + req->wake_val = cmd->data; + ctrlr->dirty = true; + } break; case RPMH_SLEEP_STATE: - req->sleep_val = cmd->data; + if (req->sleep_val != cmd->data) { + req->sleep_val = cmd->data; + ctrlr->dirty = true; + } break; default: break; } - ctrlr->dirty = true; unlock: spin_unlock_irqrestore(&ctrlr->cache_lock, flags); @@ -287,6 +294,7 @@ static void cache_batch(struct rpmh_ctrlr *ctrlr, struct batch_cache_req *req) spin_lock_irqsave(&ctrlr->cache_lock, flags); list_add_tail(&req->list, &ctrlr->batch_cache); + ctrlr->dirty = true; spin_unlock_irqrestore(&ctrlr->cache_lock, flags); } @@ -323,6 +331,7 @@ static void invalidate_batch(struct rpmh_ctrlr *ctrlr) list_for_each_entry_safe(req, tmp, &ctrlr->batch_cache, list) kfree(req); INIT_LIST_HEAD(&ctrlr->batch_cache); + ctrlr->dirty = true; spin_unlock_irqrestore(&ctrlr->cache_lock, flags); } @@ -456,6 +465,7 @@ static int send_single(struct rpmh_ctrlr *ctrlr, enum rpmh_state state, int rpmh_flush(struct rpmh_ctrlr *ctrlr) { struct cache_req *p; + unsigned long flags; int ret; if (!ctrlr->dirty) { @@ -488,7 +498,9 @@ int rpmh_flush(struct rpmh_ctrlr *ctrlr) return ret; } + spin_lock_irqsave(&ctrlr->cache_lock, flags); ctrlr->dirty = false; + spin_unlock_irqrestore(&ctrlr->cache_lock, flags); return 0; } @@ -507,7 +519,6 @@ int rpmh_invalidate(const struct device *dev) int ret; invalidate_batch(ctrlr); - ctrlr->dirty = true; do { ret = rpmh_rsc_invalidate(ctrlr_to_drv(ctrlr));