From patchwork Tue Dec 22 02:56:15 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: jubin.john@intel.com X-Patchwork-Id: 7901661 Return-Path: X-Original-To: patchwork-linux-rdma@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0A9599F71A for ; Tue, 22 Dec 2015 02:56:58 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 470C320561 for ; Tue, 22 Dec 2015 02:56:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5B459205BE for ; Tue, 22 Dec 2015 02:56:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752696AbbLVC4v (ORCPT ); Mon, 21 Dec 2015 21:56:51 -0500 Received: from mga03.intel.com ([134.134.136.65]:22931 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751671AbbLVC4s (ORCPT ); Mon, 21 Dec 2015 21:56:48 -0500 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga103.jf.intel.com with ESMTP; 21 Dec 2015 18:56:48 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,462,1444719600"; d="scan'208";a="876421965" Received: from phlsvsds.ph.intel.com ([10.228.195.38]) by orsmga002.jf.intel.com with ESMTP; 21 Dec 2015 18:56:47 -0800 Received: from phlsvsds.ph.intel.com (localhost.localdomain [127.0.0.1]) by phlsvsds.ph.intel.com (8.13.8/8.13.8) with ESMTP id tBM2uicQ029703; Mon, 21 Dec 2015 21:56:44 -0500 Received: (from jjohn@localhost) by phlsvsds.ph.intel.com (8.13.8/8.13.8/Submit) id tBM2uhW7029700; Mon, 21 Dec 2015 21:56:43 -0500 X-Authentication-Warning: phlsvsds.ph.intel.com: jjohn set sender to jubin.john@intel.com using -f From: Jubin John To: gregkh@linuxfoundation.org, devel@driverdev.osuosl.org Cc: linux-rdma@vger.kernel.org, dledford@redhat.com, mike.marciniszyn@intel.com, ira.weiny@intel.com, jubin.john@intel.com, Harish Chegondi Subject: [PATCH v3 2/6] staging/rdma/hfi1: Move s_sde to the read mostly portion of the hfi1_qp structure Date: Mon, 21 Dec 2015 21:56:15 -0500 Message-Id: <1450752979-29650-3-git-send-email-jubin.john@intel.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1450752979-29650-1-git-send-email-jubin.john@intel.com> References: <1450752979-29650-1-git-send-email-jubin.john@intel.com> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Harish Chegondi This would reduce L2 cache misses on s_sde in the _hfi1_schedule_send function when invoked from post_send thereby improving performance of post_send. Reviewed-by: Mike Marciniszyn Signed-off-by: Harish Chegondi Signed-off-by: Jubin John --- Changes in v2: - None Changes in v3: - Refreshed patch against latest staging-testing drivers/staging/rdma/hfi1/verbs.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/staging/rdma/hfi1/verbs.h b/drivers/staging/rdma/hfi1/verbs.h index 72106e5..d22db39 100644 --- a/drivers/staging/rdma/hfi1/verbs.h +++ b/drivers/staging/rdma/hfi1/verbs.h @@ -441,6 +441,7 @@ struct hfi1_qp { struct hfi1_swqe *s_wq; /* send work queue */ struct hfi1_mmap_info *ip; struct ahg_ib_header *s_hdr; /* next packet header to send */ + struct sdma_engine *s_sde; /* current sde */ /* sc for UC/RC QPs - based on ah for UD */ u8 s_sc; unsigned long timeout_jiffies; /* computed from timeout */ @@ -506,7 +507,6 @@ struct hfi1_qp { struct hfi1_swqe *s_wqe; struct hfi1_sge_state s_sge; /* current send request data */ struct hfi1_mregion *s_rdma_mr; - struct sdma_engine *s_sde; /* current sde */ u32 s_cur_size; /* size of send packet in bytes */ u32 s_len; /* total length of s_sge */ u32 s_rdma_read_len; /* total length of s_rdma_read_sge */