From patchwork Tue Oct 4 06:25:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leonardo Bras Soares Passos X-Patchwork-Id: 612602 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 3DD32C433F5 for ; Tue, 4 Oct 2022 06:26:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229705AbiJDG0J (ORCPT ); Tue, 4 Oct 2022 02:26:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55932 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229486AbiJDG0I (ORCPT ); Tue, 4 Oct 2022 02:26:08 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7BC7621263 for ; Mon, 3 Oct 2022 23:26:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1664864761; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=ATSwXcQokmwIH/YgclkGZO8BhI6NMe9jQwAsKeX4mSE=; b=Mt3fgTSWwj16MGPYw/yDOD5e1np2FQuRQfqK9mXJlFng2qz5oXrHRg/xrXYNibwBOpxnFe zat/wj+80rZgJJsPgjzYG6xJAUcTzMIamGc1pkccm1JqSIFXK3ncK359zBHTDDgjoAqX4M uuoI8U+LeoptYj+ZiC0wt3eX/5OL5Z8= Received: from mail-vk1-f199.google.com (mail-vk1-f199.google.com [209.85.221.199]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_128_GCM_SHA256) id us-mta-197-t0-opXG2NHia_AFfBBa0MQ-1; Tue, 04 Oct 2022 02:26:00 -0400 X-MC-Unique: t0-opXG2NHia_AFfBBa0MQ-1 Received: by mail-vk1-f199.google.com with SMTP id z5-20020a056122148500b003a2e0028d97so2850502vkp.22 for ; Mon, 03 Oct 2022 23:26:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date; bh=ATSwXcQokmwIH/YgclkGZO8BhI6NMe9jQwAsKeX4mSE=; b=5zeZvLygbPmikRuZDgzsnotO9uC1QwJEbMnoJaj6ldqNPWAra5Y9+HgQ+ytK/0U5S+ Ffgjqzdvfpi4/Ru1NWGrS+TJcfLadVT1ib8imN1w/4McXAo0J93h7Iy/CYzGaeWhxiiK 8SXtD5EdV1VieReKEyCCR9HmoGfR4WahN1pyH+0Oguvf+vinMB/xMUEwPhcmOddTHYeS ZUeNa+2din69dd0buKCpeQgzf5tMCup7Ge9kZqjch5WEv36UqbX8TsB8eqjdZI2a1uji Qz3TLgHoAnKvsAJ35KkkJff2DSwDAtfAbkJlIk2dwn02Q0k5/tCd6T3zgi/WMzMHf7aC iRMQ== X-Gm-Message-State: ACrzQf0tU4aVfrX44/lk5Maq1ArYOsHzSAKsEzdcI0peCxli5HJcjZQD qND8P/jXmJqtfpT8NCSDXucb3tCCNV/kuvyft9a30V3UaYFtsMHAi3U7+4WZaPQQtmEZIUSpdaE l4tf3uV1oQ5rzVho9nJU1rbUl X-Received: by 2002:a1f:ac16:0:b0:3a3:258:3442 with SMTP id v22-20020a1fac16000000b003a302583442mr10220608vke.2.1664864759822; Mon, 03 Oct 2022 23:25:59 -0700 (PDT) X-Google-Smtp-Source: AMsMyM4XbdLYaoQUUg8Mgb6U0GIeBHnweooSVWMg0hl/x+bHpaNodSp5SoFkdNa6MKUGg9K0/GQYpA== X-Received: by 2002:a1f:ac16:0:b0:3a3:258:3442 with SMTP id v22-20020a1fac16000000b003a302583442mr10220605vke.2.1664864759648; Mon, 03 Oct 2022 23:25:59 -0700 (PDT) Received: from localhost.localdomain ([2804:1b3:a801:6b4a:8652:f462:a76a:cc3a]) by smtp.gmail.com with ESMTPSA id r196-20020a1fc1cd000000b003aa8c4ebfb8sm2521168vkf.50.2022.10.03.23.25.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Oct 2022 23:25:58 -0700 (PDT) From: Leonardo Bras To: Steffen Klassert , Herbert Xu , "David S. Miller" , mtosatti@redhat.com Cc: Leonardo Bras , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 1/1] crypto/pcrypt: Do not use isolated CPUs for callback Date: Tue, 4 Oct 2022 03:25:37 -0300 Message-Id: <20221004062536.280712-1-leobras@redhat.com> X-Mailer: git-send-email 2.37.3 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Currently pcrypt_aead_init_tfm() will pick callback cpus (ctx->cb_cpu) from any online cpus. Later padata_reorder() will queue_work_on() the chosen cb_cpu. This is undesired if the chosen cb_cpu is listed as isolated (i.e. using isolcpus=... kernel parameter), since the work queued will interfere with the workload on the isolated cpu. Make sure isolated cpus are not used for pcrypt. Signed-off-by: Leonardo Bras --- crypto/pcrypt.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c index 9d10b846ccf73..9017d08c91a8d 100644 --- a/crypto/pcrypt.c +++ b/crypto/pcrypt.c @@ -16,6 +16,7 @@ #include #include #include +#include static struct padata_instance *pencrypt; static struct padata_instance *pdecrypt; @@ -175,13 +176,16 @@ static int pcrypt_aead_init_tfm(struct crypto_aead *tfm) struct pcrypt_instance_ctx *ictx = aead_instance_ctx(inst); struct pcrypt_aead_ctx *ctx = crypto_aead_ctx(tfm); struct crypto_aead *cipher; + struct cpumask non_isolated; + + cpumask_and(&non_isolated, cpu_online_mask, housekeeping_cpumask(HK_TYPE_DOMAIN)); cpu_index = (unsigned int)atomic_inc_return(&ictx->tfm_count) % - cpumask_weight(cpu_online_mask); + cpumask_weight(&non_isolated); - ctx->cb_cpu = cpumask_first(cpu_online_mask); + ctx->cb_cpu = cpumask_first(&non_isolated); for (cpu = 0; cpu < cpu_index; cpu++) - ctx->cb_cpu = cpumask_next(ctx->cb_cpu, cpu_online_mask); + ctx->cb_cpu = cpumask_next(ctx->cb_cpu, &non_isolated); cipher = crypto_spawn_aead(&ictx->spawn);