From patchwork Fri Oct 9 19:50:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 11829073 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E684A15E6 for ; Fri, 9 Oct 2020 20:04:59 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B9FB9222BA for ; Fri, 9 Oct 2020 20:04:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B9FB9222BA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.5182.13552 (Exim 4.92) (envelope-from ) id 1kQycs-0000PO-DO; Fri, 09 Oct 2020 20:04:26 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 5182.13552; Fri, 09 Oct 2020 20:04:26 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kQycs-0000PH-AF; Fri, 09 Oct 2020 20:04:26 +0000 Received: by outflank-mailman (input) for mailman id 5182; Fri, 09 Oct 2020 20:04:24 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kQySF-0003VG-66 for xen-devel@lists.xenproject.org; Fri, 09 Oct 2020 19:53:27 +0000 Received: from mga07.intel.com (unknown [134.134.136.100]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 1f381d98-fe9e-4d68-8e1c-ef3c87d3dae7; Fri, 09 Oct 2020 19:53:20 +0000 (UTC) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:53:19 -0700 Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:53:18 -0700 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kQySF-0003VG-66 for xen-devel@lists.xenproject.org; Fri, 09 Oct 2020 19:53:27 +0000 X-Inumbo-ID: 1f381d98-fe9e-4d68-8e1c-ef3c87d3dae7 Received: from mga07.intel.com (unknown [134.134.136.100]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 1f381d98-fe9e-4d68-8e1c-ef3c87d3dae7; Fri, 09 Oct 2020 19:53:20 +0000 (UTC) IronPort-SDR: oFArxdeaaEdNwkSkWc6QZhEbjIJdqfCt0F9ef7cZ36fUICd3MSKqpYgAseFrbQH6krHzX5t4r4 lUxcH/chTKog== X-IronPort-AV: E=McAfee;i="6000,8403,9769"; a="229715323" X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="229715323" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:53:19 -0700 IronPort-SDR: W4xxziDMxkncUnjnfmhtERgTle+fDEBI/syTBEG/tlt++YK2v+9/w8FvvM36z1FzCpPIzrEgyR 3zBS2pDk0hzg== X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="354959339" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:53:18 -0700 From: ira.weiny@intel.com To: Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Peter Zijlstra Cc: Ira Weiny , "James E.J. Bottomley" , "Martin K. Petersen" , x86@kernel.org, Dave Hansen , Dan Williams , Fenghua Yu , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, kexec@lists.infradead.org, linux-bcache@vger.kernel.org, linux-mtd@lists.infradead.org, devel@driverdev.osuosl.org, linux-efi@vger.kernel.org, linux-mmc@vger.kernel.org, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, linux-nfs@vger.kernel.org, ceph-devel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-aio@kvack.org, io-uring@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-um@lists.infradead.org, linux-ntfs-dev@lists.sourceforge.net, reiserfs-devel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-nilfs@vger.kernel.org, cluster-devel@redhat.com, ecryptfs@vger.kernel.org, linux-cifs@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-afs@lists.infradead.org, linux-rdma@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, drbd-dev@lists.linbit.com, linux-block@vger.kernel.org, xen-devel@lists.xenproject.org, linux-cachefs@redhat.com, samba-technical@lists.samba.org, intel-wired-lan@lists.osuosl.org Subject: [PATCH RFC PKS/PMEM 42/58] drivers/scsi: Utilize new kmap_thread() Date: Fri, 9 Oct 2020 12:50:17 -0700 Message-Id: <20201009195033.3208459-43-ira.weiny@intel.com> X-Mailer: git-send-email 2.28.0.rc0.12.gb6a658bd00c9 In-Reply-To: <20201009195033.3208459-1-ira.weiny@intel.com> References: <20201009195033.3208459-1-ira.weiny@intel.com> MIME-Version: 1.0 From: Ira Weiny These kmap() calls are localized to a single thread. To avoid the over head of global PKRS updates use the new kmap_thread() call. Cc: "James E.J. Bottomley" Cc: "Martin K. Petersen" Signed-off-by: Ira Weiny --- drivers/scsi/ipr.c | 8 ++++---- drivers/scsi/pmcraid.c | 8 ++++---- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index b0aa58d117cc..a5a0b8feb661 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -3923,9 +3923,9 @@ static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, buffer += bsize_elem) { struct page *page = sg_page(sg); - kaddr = kmap(page); + kaddr = kmap_thread(page); memcpy(kaddr, buffer, bsize_elem); - kunmap(page); + kunmap_thread(page); sg->length = bsize_elem; @@ -3938,9 +3938,9 @@ static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, if (len % bsize_elem) { struct page *page = sg_page(sg); - kaddr = kmap(page); + kaddr = kmap_thread(page); memcpy(kaddr, buffer, len % bsize_elem); - kunmap(page); + kunmap_thread(page); sg->length = len % bsize_elem; } diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c index aa9ae2ae8579..4b05ba4b8a11 100644 --- a/drivers/scsi/pmcraid.c +++ b/drivers/scsi/pmcraid.c @@ -3269,13 +3269,13 @@ static int pmcraid_copy_sglist( for (i = 0; i < (len / bsize_elem); i++, sg = sg_next(sg), buffer += bsize_elem) { struct page *page = sg_page(sg); - kaddr = kmap(page); + kaddr = kmap_thread(page); if (direction == DMA_TO_DEVICE) rc = copy_from_user(kaddr, buffer, bsize_elem); else rc = copy_to_user(buffer, kaddr, bsize_elem); - kunmap(page); + kunmap_thread(page); if (rc) { pmcraid_err("failed to copy user data into sg list\n"); @@ -3288,14 +3288,14 @@ static int pmcraid_copy_sglist( if (len % bsize_elem) { struct page *page = sg_page(sg); - kaddr = kmap(page); + kaddr = kmap_thread(page); if (direction == DMA_TO_DEVICE) rc = copy_from_user(kaddr, buffer, len % bsize_elem); else rc = copy_to_user(buffer, kaddr, len % bsize_elem); - kunmap(page); + kunmap_thread(page); sg->length = len % bsize_elem; }