From patchwork Tue Sep 29 20:25:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 259095 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=-6.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 9BB28C4742E for ; Tue, 29 Sep 2020 20:39:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 435A92074B for ; Tue, 29 Sep 2020 20:39:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="DsOiiyLn"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="aTr/bQVc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729544AbgI2UjH (ORCPT ); Tue, 29 Sep 2020 16:39:07 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:49690 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729375AbgI2UgE (ORCPT ); Tue, 29 Sep 2020 16:36:04 -0400 Message-Id: <20200929203501.384359804@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1601411762; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=fic2oF38maLPjPgIPYA9CNGhq9WYNsn4UUVLjOIQ4Yc=; b=DsOiiyLnllJKv8DXD1ITRdFwttZavH4BitIxzxhOTLKbM3lFF+1Uy1bhGv2oWrUg038FUI IpkF7hWFGSKqKyu3vlZfdCWRAsxpfcuPQivMhcDL29MWeXAr99TUc5J+jZ0OnwchOglAfT HEeU6CwQwamjWVo4nxnsJdNpCTXW6ysfCLORlvzVb0lShFeBhRg9kyQHHAQA554LEALUsO yawJTzO61XnnOGqrXdnKma8Pg9IrJcWeWcgFg7NI9YtvHYMMSeC0ZhjKYyl3B4pNpDc3vP JXYT9WRa47XoB1N5GFk9s4eFPHwj1TvJhQdB3sbArhGNNueV/S3EmNAMQevysQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1601411762; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=fic2oF38maLPjPgIPYA9CNGhq9WYNsn4UUVLjOIQ4Yc=; b=aTr/bQVceg0LVg317+omnTdQBuqT2WpvaGqxz6OuJWvQIe93iXRiXC9t4tZxlEDWJDn0LI yCuQHq64Gj46/3CQ== Date: Tue, 29 Sep 2020 22:25:28 +0200 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , Paul McKenney , Matthew Wilcox , Christian Benvenuti , Govindarajulu Varadarajan <_govind@gmx.com>, Dave Miller , Jakub Kicinski , netdev@vger.kernel.org, Jonathan Corbet , Mauro Carvalho Chehab , linux-doc@vger.kernel.org, Sebastian Andrzej Siewior , Luc Van Oostenryck , Jay Cliburn , Chris Snook , Vishal Kulkarni , Jeff Kirsher , intel-wired-lan@lists.osuosl.org, Shannon Nelson , Pensando Drivers , Andrew Lunn , Heiner Kallweit , Russell King , Thomas Bogendoerfer , Solarflare linux maintainers , Edward Cree , Martin Habets , Jon Mason , Daniel Drake , Ulrich Kunitz , Kalle Valo , linux-wireless@vger.kernel.org, linux-usb@vger.kernel.org, Greg Kroah-Hartman , Arend van Spriel , Franky Lin , Hante Meuleman , Chi-Hsien Lin , Wright Feng , brcm80211-dev-list.pdl@broadcom.com, brcm80211-dev-list@cypress.com, Stanislav Yakovlev , Stanislaw Gruszka , Johannes Berg , Emmanuel Grumbach , Luca Coelho , Intel Linux Wireless , Jouni Malinen , Amitkumar Karwar , Ganapathi Bhat , Xinming Hu , libertas-dev@lists.infradead.org, Pascal Terjan , Ping-Ke Shih Subject: [patch V2 19/36] net: vxge: Remove in_interrupt() conditionals References: <20200929202509.673358734@linutronix.de> MIME-Version: 1.0 Content-transfer-encoding: 8-bit Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Sebastian Andrzej Siewior vxge_os_dma_malloc() and vxge_os_dma_malloc_async() are both called from callchains which use GFP_KERNEL allocations unconditionally or have other requirements to be called from fully preemptible task context.. vxge_os_dma_malloc(): 1) __vxge_hw_blockpool_create() <- GFP_KERNEL 2) __vxge_hw_mempool_grow() <- vzalloc() __vxge_hw_blockpool_malloc() vxge_os_dma_malloc_async(): 1 __vxge_hw_mempool_grow() <- vzalloc() __vxge_hw_blockpool_malloc() __vxge_hw_blockpool_blocks_add() 2) vxge_hw_vpath_open() <- vzalloc() __vxge_hw_blockpool_block_allocate() That means neither of these functions needs a conditional allocation mode. Remove the in_interrupt() conditional and use GFP_KERNEL. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner --- drivers/net/ethernet/neterion/vxge/vxge-config.c | 9 +-------- drivers/net/ethernet/neterion/vxge/vxge-config.h | 7 +------ 2 files changed, 2 insertions(+), 14 deletions(-) --- a/drivers/net/ethernet/neterion/vxge/vxge-config.c +++ b/drivers/net/ethernet/neterion/vxge/vxge-config.c @@ -2303,16 +2303,9 @@ static void vxge_hw_blockpool_block_add( static inline void vxge_os_dma_malloc_async(struct pci_dev *pdev, void *devh, unsigned long size) { - gfp_t flags; void *vaddr; - if (in_interrupt()) - flags = GFP_ATOMIC | GFP_DMA; - else - flags = GFP_KERNEL | GFP_DMA; - - vaddr = kmalloc((size), flags); - + vaddr = kmalloc(size, GFP_KERNEL | GFP_DMA); vxge_hw_blockpool_block_add(devh, vaddr, size, pdev, pdev); } --- a/drivers/net/ethernet/neterion/vxge/vxge-config.h +++ b/drivers/net/ethernet/neterion/vxge/vxge-config.h @@ -1899,18 +1899,13 @@ static inline void *vxge_os_dma_malloc(s struct pci_dev **p_dmah, struct pci_dev **p_dma_acch) { - gfp_t flags; void *vaddr; unsigned long misaligned = 0; int realloc_flag = 0; *p_dma_acch = *p_dmah = NULL; - if (in_interrupt()) - flags = GFP_ATOMIC | GFP_DMA; - else - flags = GFP_KERNEL | GFP_DMA; realloc: - vaddr = kmalloc((size), flags); + vaddr = kmalloc(size, GFP_KERNEL | GFP_DMA); if (vaddr == NULL) return vaddr; misaligned = (unsigned long)VXGE_ALIGN((unsigned long)vaddr,