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: 11827851 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 8374E1744 for ; Fri, 9 Oct 2020 19:53:21 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (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 65CA322512 for ; Fri, 9 Oct 2020 19:53:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 65CA322512 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 5DD44159C2203; Fri, 9 Oct 2020 12:53:21 -0700 (PDT) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=134.134.136.100; helo=mga07.intel.com; envelope-from=ira.weiny@intel.com; receiver= Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 7A460159C2205 for ; Fri, 9 Oct 2020 12:53:19 -0700 (PDT) IronPort-SDR: m2ZYsmViilLLufvZuPi2GQq2RthTv0W4llQKlDC5TYjEkn+BYd/3XNl8vIEZe+AggSbnI26NkY R4CJMfe5pKiw== X-IronPort-AV: E=McAfee;i="6000,8403,9769"; a="229715321" X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="229715321" 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 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 Message-ID-Hash: 4EKARUJXVCS4AVIXB37OLK4MF4XM5EG4 X-Message-ID-Hash: 4EKARUJXVCS4AVIXB37OLK4MF4XM5EG4 X-MailFrom: ira.weiny@intel.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; suspicious-header CC: "James E.J. 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Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: 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; }