From patchwork Mon Jan 15 12:13:09 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kashyap Desai X-Patchwork-Id: 10163647 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id EDD85602C2 for ; Mon, 15 Jan 2018 12:13:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DFC7C265B9 for ; Mon, 15 Jan 2018 12:13:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D358C28723; Mon, 15 Jan 2018 12:13:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BD1B3265B9 for ; Mon, 15 Jan 2018 12:13:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932811AbeAOMNM (ORCPT ); Mon, 15 Jan 2018 07:13:12 -0500 Received: from mail-io0-f194.google.com ([209.85.223.194]:46464 "EHLO mail-io0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932363AbeAOMNL (ORCPT ); Mon, 15 Jan 2018 07:13:11 -0500 Received: by mail-io0-f194.google.com with SMTP id f34so7576619ioi.13 for ; Mon, 15 Jan 2018 04:13:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:mime-version:thread-index:date:message-id:subject:to; bh=Rae0HihG4VnDuAiKZ2MvFQRosYTGcvrv/HJ4tMJgDN0=; b=cFKLwG8Y679Lv+HScvDAhr0EH7rTQvVOpCAsupwqlzIscjJSdsaISvgc6L4GmIjSgt txU4wRYcNYls4J5rY7XbglaYWeWxuqXPRq5Jdjb9tPfg5+ex+FTyU6akAJYKSPyAkAS8 86qrGhz+gQ8KF3gsLJpZZQ9ZO78MKWr9FCKHk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:mime-version:thread-index:date:message-id :subject:to; bh=Rae0HihG4VnDuAiKZ2MvFQRosYTGcvrv/HJ4tMJgDN0=; b=I/7mINTSnBlhCXU1qYAz0mip+mIBZKS6FBokR8ufEmevjtByBpTw0Kop1MSYlp422m ZJizmS55uLwFnJWIpSptPpN9VG6o6f4k+VWg8g1b8Se5ySXt3/PFcIfeXOiOxWT51rR0 rpwZBF57nOVkx0kvzP8cXCEMNyRtgEM2FUaPlnN7VOtR+jvVojcgvnSeb8OQLoW1TdN9 GtgRhH4u5a0jvlqPyOCJOeUbG6xc/ZHEYfYxoUSFkF1V/y3qYAn5iezvo0EJMqCueRSg K9dyVUCtCetvr+lOtf8tQjwBya1gp5Zi3XZRcsulu0L2Dmyfj4RN7tNdBQUlq68YgT8F Qvsw== X-Gm-Message-State: AKwxytcm4HUFrPucbb7pSp+tnFan0EDcVLjwLl5xGwkfrDC8XxPsjlXN //xzNqycNXfUlwc8yx3/GvLaywx/kpCL0L9iZZN4sw== X-Google-Smtp-Source: ACJfBoujNwinHTu2HYUJhZqfdpftyoUiMm/lhYc0KCDl/i1rglKYeAN3SNve0XWkWXJumS18zHMhw0EXzsn4L0LQrvY= X-Received: by 10.107.185.212 with SMTP id j203mr5794908iof.237.1516018390772; Mon, 15 Jan 2018 04:13:10 -0800 (PST) From: Kashyap Desai MIME-Version: 1.0 X-Mailer: Microsoft Outlook 14.0 Thread-Index: AdON+i8D4Jr6p0/FTQyIOPWLmQ56rA== Date: Mon, 15 Jan 2018 17:43:09 +0530 Message-ID: Subject: [RFC 2/2] mpt3sas/megaraid_sas : reply queue load balancing To: linux-scsi@vger.kernel.org, Peter Rivera Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Patch for Fix-2 explained in PATCH 0. Signed-off-by: Kashyap Desai < kashyap.desai@broadcom.com> --- mpt3sas/mpt3sas_base.c | 5 ++++- mpt3sas/mpt3sas_base.h | 1 + 2 files changed, 5 insertions(+), 1 deletion(-) -- 2.5.5 diff --git a/mpt3sas/mpt3sas_base.c b/mpt3sas/mpt3sas_base.c index 0b351d4..20bf2ad 100644 --- a/mpt3sas/mpt3sas_base.c +++ b/mpt3sas/mpt3sas_base.c @@ -2811,7 +2811,8 @@ mpt3sas_base_get_reply_virt_addr(struct MPT3SAS_ADAPTER *ioc, u32 phys_addr) static inline u8 _base_get_msix_index(struct MPT3SAS_ADAPTER *ioc) { - return ioc->cpu_msix_table[raw_smp_processor_id()]; + return ioc->reply_queue_count ? (atomic64_add_return(1, + &ioc->total_io_cnt) % ioc->reply_queue_count) : 0; } /** @@ -5775,6 +5776,8 @@ _base_make_ioc_operational(struct MPT3SAS_ADAPTER *ioc) dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name, __func__)); + atomic64_set(&ioc->total_io_cnt, 0); + /* clean the delayed target reset list */ list_for_each_entry_safe(delayed_tr, delayed_tr_next, &ioc->delayed_tr_list, list) { diff --git a/mpt3sas/mpt3sas_base.h b/mpt3sas/mpt3sas_base.h index 456d928..1c39107 100644 --- a/mpt3sas/mpt3sas_base.h +++ b/mpt3sas/mpt3sas_base.h @@ -1357,6 +1357,7 @@ struct MPT3SAS_ADAPTER { u8 is_gen35_ioc; u8 atomic_desc_capable; u32 irqpoll_weight; + atomic64_t total_io_cnt; PUT_SMID_IO_FP_HIP put_smid_scsi_io; PUT_SMID_IO_FP_HIP put_smid_fast_path; PUT_SMID_IO_FP_HIP put_smid_hi_priority;