From patchwork Wed Nov 17 02:59:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Davidlohr Bueso X-Patchwork-Id: 518724 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82408C4332F for ; Wed, 17 Nov 2021 03:00:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 61D2663212 for ; Wed, 17 Nov 2021 03:00:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232836AbhKQDDP (ORCPT ); Tue, 16 Nov 2021 22:03:15 -0500 Received: from smtp-out2.suse.de ([195.135.220.29]:47910 "EHLO smtp-out2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232825AbhKQDDO (ORCPT ); Tue, 16 Nov 2021 22:03:14 -0500 Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 8784B1FD29; Wed, 17 Nov 2021 03:00:15 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 1E98B13BBF; Wed, 17 Nov 2021 03:00:12 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id pR+jOTxwlGFefgAAMHmgww (envelope-from ); Wed, 17 Nov 2021 03:00:12 +0000 From: Davidlohr Bueso To: martin.petersen@oracle.com, jejb@linux.ibm.com Cc: hare@suse.de, bigeasy@linutronix.de, tglx@linutronix.de, linux-scsi@vger.kernel.org, linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org, dave@stgolabs.net Subject: [PATCH -next 0/3] scsi/fcoe: Play nicer with PREEMPT_RT Date: Tue, 16 Nov 2021 18:59:53 -0800 Message-Id: <20211117025956.79616-1-dave@stgolabs.net> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Hi, The following are the result of trying to get rid of the out-of-tree equivalent[1]. Patches 1 and 2 remove the actual scheduling while atomic scenarios. Patch 3 could be considered optional because afaict the stats do not actually have blocking calls while having preemption disabled. But from an RT perspective it's still beneficial as the region remains preemptible. Compile tested only. [1] https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git/tree/patches/scsi_fcoe__Make_RT_aware..patch?h=linux-5.15.y-rt-patches Thanks! Davidlohr Bueso (3): scsi/libfc: Remove get_cpu() semantics in fc_exch_em_alloc() scsi/fcoe: Add a local_lock to fcoe_percpu scsi/fcoe: Add a local_lock to percpu localport statistics drivers/scsi/bnx2fc/bnx2fc_fcoe.c | 16 ++++++++------ drivers/scsi/bnx2fc/bnx2fc_io.c | 5 +++-- drivers/scsi/fcoe/fcoe.c | 35 +++++++++++++++++++------------ drivers/scsi/fcoe/fcoe_ctlr.c | 24 +++++++++++++-------- drivers/scsi/libfc/fc_exch.c | 3 +-- drivers/scsi/libfc/fc_fcp.c | 31 +++++++++++++++++++-------- drivers/scsi/qedf/qedf_main.c | 7 ++++--- include/scsi/libfc.h | 7 +++++++ include/scsi/libfcoe.h | 2 ++ 9 files changed, 86 insertions(+), 44 deletions(-)