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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 73263C433F5 for ; Thu, 12 May 2022 21:54:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358911AbiELVyw (ORCPT ); Thu, 12 May 2022 17:54:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53298 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1359000AbiELVyh (ORCPT ); Thu, 12 May 2022 17:54:37 -0400 Received: from mail-yw1-x1132.google.com (mail-yw1-x1132.google.com [IPv6:2607:f8b0:4864:20::1132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BCDEC5839A for ; Thu, 12 May 2022 14:54:36 -0700 (PDT) Received: by mail-yw1-x1132.google.com with SMTP id 00721157ae682-2f83983782fso72140277b3.6 for ; Thu, 12 May 2022 14:54:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=K1VU58MHQqP+/7H+d1w/E+L2ZvFeIXOvlm41/oypmL0=; b=sOYt/Gx0hkqvhlgblLEO/HYJxZTdK226ravqNQqKOZQ4UJ5y4ThWbN3ehEwwngDlYf 11tzgbu0WDOYcy1r8mukQ0ovGT+JvnNid4hvM/mwJSBL9p6kxhhMPl1VxGiE1H/Brvx6 sapouRkIaz3YQWLwT6VqH4XBSxiLo/uPAiRrSo/Sc0ntI2pRCWlzprmHwvostLXD2a1k qhLlOWMG5cY3OqsqNkLjwCh4XSsVHyjdQAiYDfTxJxahxf6nPPoJvTrjufeZHC9GpGfR af8bi9WIHNWL/KF5rHUcdbfZUiKC9vjY0PXp3N2S78bHVYiW6GXw6Cvfpo82kcxnTVm/ Ec4w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=K1VU58MHQqP+/7H+d1w/E+L2ZvFeIXOvlm41/oypmL0=; b=SnFnilFMTqqVQedwGUUCrhtVu/AJoHkHONJsV8Hnlj+tH7v3lb1DS6zySF1iIy4tYb elpPt+Lf21eKQ2KPT5lNcvGKjVd4adAVgMD0Y2GFyp6/fPmekJbJfUXKVBIt9CfSkMhr Wq0V/pwlkos6VDQ4ZwK53Gzp/e3NAcnepYW9HGXgvhjx+ekpuOkND7pUZtm69pyqYQ8y xraLCxqUj6U6q1ILjUzhKekA2siGhMEq2fA+N1FRE8l2DPCWtOtgiXGp2BcxQzbwpIcC p/UHZJzIW9d5lJUXT6twBQhnbPyL/oxxtne2Drv17eHqmrIbDqp2zm6EXCr4/VuWkq70 NE2A== X-Gm-Message-State: AOAM530uREoG7Or7di9FNPn2pEci8rKfCi4Oc5MrMc9i9ORprQLHIyLF TvHHvOgSrpgVj/xPjfDJTXLC8AmA0s5WV/GRj7F7pg== X-Google-Smtp-Source: ABdhPJzvEO0jiVxrIG+1xE2X6cZ/BJG2CWgwTmUY1c9wQnpnOTd/I357N8dayLCf00VtX03B0P1jTijf3GPai6A5/ak= X-Received: by 2002:a81:1d48:0:b0:2f1:8ebf:25f3 with SMTP id d69-20020a811d48000000b002f18ebf25f3mr2377894ywd.118.1652392475988; Thu, 12 May 2022 14:54:35 -0700 (PDT) MIME-Version: 1.0 References: <20220419211658.11403-1-apais@linux.microsoft.com> <20220419211658.11403-2-apais@linux.microsoft.com> <353023ba-d506-5d45-be68-df2025074ed6@kernel.org> <3ee366a7-e61f-e513-aa2f-12e8d5316f3c@embeddedor.com> In-Reply-To: From: Linus Walleij Date: Thu, 12 May 2022 23:54:23 +0200 Message-ID: Subject: Re: [RFC 1/1] drivers/dma/*: replace tasklets with workqueue To: Allen Pais Cc: Andy Shevchenko , "Gustavo A. R. Silva" , Krzysztof Kozlowski , olivier.dautricourt@orolia.com, sr@denx.de, Vinod Koul , Kees Cook , linux-hardening@vger.kernel.org, ludovic.desroches@microchip.com, tudor.ambarus@microchip.com, f.fainelli@gmail.com, rjui@broadcom.com, sbranden@broadcom.com, bcm-kernel-feedback-list@broadcom.com, nsaenz@kernel.org, paul@crapouillou.net, Eugeniy.Paltsev@synopsys.com, gustavo.pimentel@synopsys.com, vireshk@kernel.org, leoyang.li@nxp.com, zw@zh-kernel.org, wangzhou1@hisilicon.com, shawnguo@kernel.org, s.hauer@pengutronix.de, sean.wang@mediatek.com, matthias.bgg@gmail.com, afaerber@suse.de, mani@kernel.org, logang@deltatee.com, sanju.mehta@amd.com, daniel@zonque.org, haojian.zhuang@gmail.com, robert.jarzmik@free.fr, agross@kernel.org, bjorn.andersson@linaro.org, krzysztof.kozlowski@linaro.org, green.wan@sifive.com, orsonzhai@gmail.com, baolin.wang7@gmail.com, zhang.lyra@gmail.com, patrice.chotard@foss.st.com, wens@csie.org, jernej.skrabec@gmail.com, samuel@sholland.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org On Fri, May 6, 2022 at 7:43 PM Allen Pais wrote: > - Concerns regarding throughput, would workqueues be as efficient as tasklets (Vinod) You need to ask the scheduler people about this. The workqueues goes deep into the scheduler and I can't make out how they are prioritized, but they are certainly not treated like any other task. Yours, Linus Walleij