From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0246C433DB for ; Mon, 22 Mar 2021 10:12:55 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5AD4861974 for ; Mon, 22 Mar 2021 10:12:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5AD4861974 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:Cc:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=t+fWB8XS2/tAjK2H0ZCAR9W7Wdd/e3zHM423b1tI8nE=; b=JzgvZFv/aiK/aIikLO0vxTA8r g+h3hE38S50TTBO4K8QEYFPohvHS59B8LsxibQpHvwxpSFqtKmWvCiU3U1fHdKEVxG6olXZoNN9NY lyFKvMJLUoVqVimoq+0khkHyR2iHzdKCxAsXm5lsJFledPn3G8kPY5fYu8FcSsTFxWcCs7nYA9Th3 0r4qAzy9bKQz/vGuxxZ6YZJTx72a5gIr9S7KefVShaKKDTcM5p+YP0O85c44AdPEfEGWWPceLxaws HmoXEwxSOytW9920XP1OfEMv9zuSeO4JKKUSiprAC0ImFpeMH3JNPblAdayuQH5cfEAH0r19zd1Qh GHWmS6W8A==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lOHWZ-00BJQp-Pq; Mon, 22 Mar 2021 10:11:03 +0000 Received: from mail-wm1-x335.google.com ([2a00:1450:4864:20::335]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lOHWQ-00BJPm-9j for linux-arm-kernel@lists.infradead.org; Mon, 22 Mar 2021 10:10:56 +0000 Received: by mail-wm1-x335.google.com with SMTP id n11-20020a05600c4f8bb029010e5cf86347so10897357wmq.1 for ; Mon, 22 Mar 2021 03:10:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=Pl/1x/dUibJwhZPPXqj++9a+GjOkKTPY4TtNftw5ACE=; b=fzQrW0MY/qPU0DyGvJ8PqjweP6lFpaYeQnb2kYMfUyF2dHpGZpsxKb1iPJ+KBz48bs nuHPcsBGejT/eGKmy7MV8vRuU4Q3KW/JqXzGARh0J9/OkihRjshIXhadGscapTMqjxx1 kNXI6rhv6yo9JtEsXhyiZbi5ciQdliP02vux6EU9Yhgy/wB+XAODcPS85U2S6Jz0YY1V YfaAzE8MaA16j+Jmjf1ODzFJ5FZcQ8NyvgoPjZJ9kioZSMXtDHQJExfKCz/QxhFGXcdG vcqdLg8bByYPX1VjFKwiqnDubcGvWPbNuEHxp33CPyI5XtQW3C6U+lLY/6W8Q4e6I2Y4 dFCQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=Pl/1x/dUibJwhZPPXqj++9a+GjOkKTPY4TtNftw5ACE=; b=kV3j+tEnVXZ3FWxe0l1uzrlmdu8oRetUz6M/Y4qJaywcZFqQMnayUc7pJWUZ4qQPgA DDk4L/FJQstGYC7qGiP0DNFvbL309xG6ojVCcNvfTKPL2chL6Jw2ReElHnAMIk5mMwaV 6jbjmmvRxdvATkougFpB2Mb018IKmkzGTD52+WIfFBKRS7T/vSo8lu5kG4XgLNF7Mza/ DNW5uedx8QvaRjEQzYG+ghIrKETLajgzMA4iPWxts9afuv7UVLy9rSOLkZgiUA5pic56 z4S5fFLvjSmY+q4u6p8dtutI0pVtf1K1cGc4JfpXvQLs4xYzzpVtNS6YPLj15JhWlyqH g2Pg== X-Gm-Message-State: AOAM533bS2FJfP74TVnPxoRBlRjViQwNPNkK9VZUT0W7zbVxFpu8P1DX dGOq9XZhJqUSSVqPGNZF9Z8QlmTbMpOqmw== X-Google-Smtp-Source: ABdhPJw6hR/D3ntozds8E1xl58azewk89v8W83EuKkKgkv9xG2vtmsbj2U4laVkYvMRLrzNd2gHtVA== X-Received: by 2002:a05:600c:358c:: with SMTP id p12mr15036765wmq.19.1616407852724; Mon, 22 Mar 2021 03:10:52 -0700 (PDT) Received: from ?IPv6:2a01:e34:ed2f:f020:d8b:d5f9:2138:169c? ([2a01:e34:ed2f:f020:d8b:d5f9:2138:169c]) by smtp.googlemail.com with ESMTPSA id i11sm19455755wro.53.2021.03.22.03.10.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 22 Mar 2021 03:10:52 -0700 (PDT) Subject: Re: [PATCH] clocksource/drivers/timer-mediatek: optimize systimer irq clear flow on Mediatek Socs To: Fengquan Chen , Thomas Gleixner , Matthias Brugger , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Cc: dehui.sun@mediatek.com References: <1614670085-26229-1-git-send-email-Fengquan.Chen@mediatek.com> <1614670085-26229-2-git-send-email-Fengquan.Chen@mediatek.com> From: Daniel Lezcano Message-ID: Date: Mon, 22 Mar 2021 11:10:50 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <1614670085-26229-2-git-send-email-Fengquan.Chen@mediatek.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210322_101054_732197_B9AD9D38 X-CRM114-Status: GOOD ( 22.45 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gMDIvMDMvMjAyMSAwODoyOCwgRmVuZ3F1YW4gQ2hlbiB3cm90ZToKPiAxKWVuc3VyZSBzeXN0 aW1lciBpcyBlbmFibGVkIGJlZm9yZSBjbGVhciBhbmQgZGlzYWJsZSBpbnRlcnJ1cHQsIHdoaWNo IG9ubHkKPiBmb3Igc3lzdGltZXIgaW4gTWVkaWF0ZWsgU29jcy4KPgo+IDIpY2xlYXIgYW55IHBl bmRpbmcgdGltZXItaXJxIHdoZW4gc2h1dGRvd24gdG8ga2VlcCBzdXNwZW5kIGZsb3cgY2xlYW4s Cj4gd2hlbiB1c2Ugc3lzdGltZXIgYXMgdGljay1icm9hZGNhc3QgdGltZXIKPiAKPiBDaGFuZ2Ut SWQ6IElhM2VkYTgzMzI0YWYyZmRhZjVjYmIzNTY5YTliZjAyMGExMWY4MDA5CgpSZW1vdmUgdGhl IGFib3ZlLgoKQWRkIGEgRml4ZXMgdGFnLgoKPiBTaWduZWQtb2ZmLWJ5OiBGZW5ncXVhbiBDaGVu IDxmZW5ncXVhbi5jaGVuQG1lZGlhdGVrLmNvbT4KPiAtLS0KPiAgZHJpdmVycy9jbG9ja3NvdXJj ZS90aW1lci1tZWRpYXRlay5jIHwgNCArKysrCj4gIDEgZmlsZSBjaGFuZ2VkLCA0IGluc2VydGlv bnMoKykKPiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9jbG9ja3NvdXJjZS90aW1lci1tZWRpYXRl ay5jIGIvZHJpdmVycy9jbG9ja3NvdXJjZS90aW1lci1tZWRpYXRlay5jCj4gaW5kZXggOTMxOGVk Yy4uOWYxZjA5NWRjIDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvY2xvY2tzb3VyY2UvdGltZXItbWVk aWF0ZWsuYwo+ICsrKyBiL2RyaXZlcnMvY2xvY2tzb3VyY2UvdGltZXItbWVkaWF0ZWsuYwo+IEBA IC03NSw2ICs3NSw3IEBACj4gIHN0YXRpYyB2b2lkIG10a19zeXN0X2Fja19pcnEoc3RydWN0IHRp bWVyX29mICp0bykKPiAgewo+ICAJLyogQ2xlYXIgYW5kIGRpc2FibGUgaW50ZXJydXB0ICovCj4g Kwl3cml0ZWwoU1lTVF9DT05fRU4sIFNZU1RfQ09OX1JFRyh0bykpOwoKCVNZU1RfQ09OX0VOIGlz IHNldCBiZWxvdywgd2h5IGRvIHlvdSBoYXZlIHRvIGRvIGl0IGJlZm9yZT8KCklzIHRoYXQgYSBo dyBidWcgPwoKSXQgaXMgY29uZnVzaW5nIHdoYXQgdGhlIGRlc2NyaXB0aW9uIG9mIHRoZSBTWVNU X0NPTl9FTiBzYXlzOgoKLyoKICogU1lTVF9DT05fRU46IENsb2NrIGVuYWJsZS4gU2hhbGwgYmUg c2V0IHRvCiAqICAgLSBTdGFydCB0aW1lciBjb3VudGRvd24uCiAqICAgLSBBbGxvdyB0aW1lb3V0 IHRpY2tzIGJlaW5nIHVwZGF0ZWQuCiAqICAgLSBBbGxvdyBjaGFuZ2luZyBpbnRlcnJ1cHQgZnVu Y3Rpb25zLgoKV2hhdCBtZWFucyAiaW50ZXJydXB0IGZ1bmN0aW9ucyIgPwoKRG9lcyB3cml0aW5n IHdyaXRlbChTWVNUX0NPTl9FTiwgU1lTVF9DT05fUkVHKHRvKSkgYmVmb3JlClNZU1RfQ09OX0lS UV9DTFIgYWxsb3dzIHRvIGNsZWFyIHRoZSBpbnRlcnJ1cHQgZmxhZz8KCkNhbiB5b3UgZXhwbGFp biBob3cgdGhlIHRpbWVyIHdvcmtzIHJlZ2FyZGluZyB0aGlzIHBhcnQ/CgpJdCBzb3VuZHMgdG8g bWUgYSBiaXQgc3RyYW5nZS4KCiAqCiAqIFNZU1RfQ09OX0lSUV9FTjogU2V0IHRvIGFsbG93IGlu dGVycnVwdC4KICoKICogU1lTVF9DT05fSVJRX0NMUjogU2V0IHRvIGNsZWFyIGludGVycnVwdC4K ICovCgoKPiAgCXdyaXRlbChTWVNUX0NPTl9JUlFfQ0xSIHwgU1lTVF9DT05fRU4sIFNZU1RfQ09O X1JFRyh0bykpOwo+ICB9Cj4gIAo+IEBAIC0xMTEsNiArMTEyLDkgQEAgc3RhdGljIGludCBtdGtf c3lzdF9jbGtldnRfbmV4dF9ldmVudCh1bnNpZ25lZCBsb25nIHRpY2tzLAo+ICAKPiAgc3RhdGlj IGludCBtdGtfc3lzdF9jbGtldnRfc2h1dGRvd24oc3RydWN0IGNsb2NrX2V2ZW50X2RldmljZSAq Y2xrZXZ0KQo+ICB7Cj4gKwkvKiBDbGVhciBhbnkgaXJxICovCj4gKwltdGtfc3lzdF9hY2tfaXJx KHRvX3RpbWVyX29mKGNsa2V2dCkpOwo+ICsKPiAgCS8qIERpc2FibGUgdGltZXIgKi8KPiAgCXdy aXRlbCgwLCBTWVNUX0NPTl9SRUcodG9fdGltZXJfb2YoY2xrZXZ0KSkpOwo+ICAKPiAKCgotLSAK PGh0dHA6Ly93d3cubGluYXJvLm9yZy8+IExpbmFyby5vcmcg4pSCIE9wZW4gc291cmNlIHNvZnR3 YXJlIGZvciBBUk0gU29DcwoKRm9sbG93IExpbmFybzogIDxodHRwOi8vd3d3LmZhY2Vib29rLmNv bS9wYWdlcy9MaW5hcm8+IEZhY2Vib29rIHwKPGh0dHA6Ly90d2l0dGVyLmNvbS8jIS9saW5hcm9v cmc+IFR3aXR0ZXIgfAo8aHR0cDovL3d3dy5saW5hcm8ub3JnL2xpbmFyby1ibG9nLz4gQmxvZwoK X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJt LWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3Jn Cmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtl cm5lbAo=