From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C0A5EC8A854 for ; Fri, 9 Oct 2020 19:53:31 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D1E0222522 for ; Fri, 9 Oct 2020 19:53:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D1E0222522 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 306C06B00E6; Fri, 9 Oct 2020 15:53:23 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 1AEBD6B00E4; Fri, 9 Oct 2020 15:53:23 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id ECE666B00E4; Fri, 9 Oct 2020 15:53:22 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0241.hostedemail.com [216.40.44.241]) by kanga.kvack.org (Postfix) with ESMTP id 630FB6B00E4 for ; Fri, 9 Oct 2020 15:53:22 -0400 (EDT) Received: from smtpin23.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 144FB8249980 for ; Fri, 9 Oct 2020 19:53:22 +0000 (UTC) X-FDA: 77353436244.23.quilt84_1504f04271e3 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin23.hostedemail.com (Postfix) with ESMTP id E3F9137604; Fri, 9 Oct 2020 19:53:21 +0000 (UTC) X-HE-Tag: quilt84_1504f04271e3 X-Filterd-Recvd-Size: 5720 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by imf40.hostedemail.com (Postfix) with ESMTP; Fri, 9 Oct 2020 19:53:20 +0000 (UTC) IronPort-SDR: MunxCg/8ff+41pmawleeb7LUXEo+/z/zoI5AxlHHqgQGzeufQ+cZ/x64F8lUrAs3LsIfRAbDwa nYMqFIO1Zwvg== X-IronPort-AV: E=McAfee;i="6000,8403,9769"; a="165643275" X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="165643275" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga102.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 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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 +=3D bsize_elem) { struct page *page =3D sg_page(sg); =20 - kaddr =3D kmap(page); + kaddr =3D kmap_thread(page); memcpy(kaddr, buffer, bsize_elem); - kunmap(page); + kunmap_thread(page); =20 sg->length =3D bsize_elem; =20 @@ -3938,9 +3938,9 @@ static int ipr_copy_ucode_buffer(struct ipr_sglist = *sglist, if (len % bsize_elem) { struct page *page =3D sg_page(sg); =20 - kaddr =3D kmap(page); + kaddr =3D kmap_thread(page); memcpy(kaddr, buffer, len % bsize_elem); - kunmap(page); + kunmap_thread(page); =20 sg->length =3D 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 =3D 0; i < (len / bsize_elem); i++, sg =3D sg_next(sg), buffer += =3D bsize_elem) { struct page *page =3D sg_page(sg); =20 - kaddr =3D kmap(page); + kaddr =3D kmap_thread(page); if (direction =3D=3D DMA_TO_DEVICE) rc =3D copy_from_user(kaddr, buffer, bsize_elem); else rc =3D copy_to_user(buffer, kaddr, bsize_elem); =20 - kunmap(page); + kunmap_thread(page); =20 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 =3D sg_page(sg); =20 - kaddr =3D kmap(page); + kaddr =3D kmap_thread(page); =20 if (direction =3D=3D DMA_TO_DEVICE) rc =3D copy_from_user(kaddr, buffer, len % bsize_elem); else rc =3D copy_to_user(buffer, kaddr, len % bsize_elem); =20 - kunmap(page); + kunmap_thread(page); =20 sg->length =3D len % bsize_elem; } --=20 2.28.0.rc0.12.gb6a658bd00c9