Received: by 2002:a05:6a10:22f:0:0:0:0 with SMTP id 15csp2465254pxk; Sun, 20 Sep 2020 05:11:57 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyA8aaVcfCYz40kQybIsVsKsBzXgGruqT3ecBOpvY8+hxtXhcBt8yOzyz4bqx/SXm5+TanS X-Received: by 2002:aa7:dd8b:: with SMTP id g11mr6462592edv.22.1600603917023; Sun, 20 Sep 2020 05:11:57 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1600603917; cv=none; d=google.com; s=arc-20160816; b=VPxuflJuzDulKhseAMmhyi/QYz35kI09nZAf1vsDiM+uZiySjQrzlhYSP/fpvyuzBH K0gnV2w1upszl3oov4clbGgNptoaGq0HhT+ql/suYesdbVAEl/g+4anXeTKHNzsCS771 n29AW6tbTZVJljct6y7AMrvlQJjay6gln3Wf0sSNnPdutaxAHLYNgxzrZ9QPaZH1tvLf te4p3bEj1PEBvuaynWuCMxjul0XhkpU7pURK+iBxTV66kNFfRxIsD494toMMTNiBWfgX hz47QiQP/BouuKBSXQl7z1rTBFlM1+vxPFnK6kNVSfahXD4yB6a7bcTTW4T5SHjlGCDp IjSw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:references:in-reply-to:message-id:date:subject :cc:to:from; bh=kfzErt08DuyaXhZ0SAEgeMJmbEOGSfXa/2CFyPt6l3s=; b=XPn0mi/bx7DkByyzn5YPIB/NmOgM3FiWaFpFsQCVtSNVsidN1NC3PG/rKtH251bm1R vmr0lh8iCIk21G4pcHCPrbGXtVrGBwFGh3fHB0sv0b3jGrrlwwknQovjdauKPfCYlD5g Gl9OkCypQGZa3DIy0GsOUH/ivJtXaaozBVFIwmNz6a8mo/3eXseMPnJxyCuVhTtd0S7a kxEuIzqD5adjJtEJ6C6F93Aq73tDCe+tkXKtKctGItsVbvOxaHb+nyb8yKFl5+amu/i6 1WAyT4GdiGWbogxOaLX2Mo10xQv8MK+x/NtkxrwKhDm+rXoAuj36gZ6m7YKJsjd/JJuy Q/3w== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id h7si6233628ejt.170.2020.09.20.05.11.34; Sun, 20 Sep 2020 05:11:57 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726576AbgITMJp (ORCPT + 99 others); Sun, 20 Sep 2020 08:09:45 -0400 Received: from mail2-relais-roc.national.inria.fr ([192.134.164.83]:50034 "EHLO mail2-relais-roc.national.inria.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726497AbgITMJb (ORCPT ); Sun, 20 Sep 2020 08:09:31 -0400 X-IronPort-AV: E=Sophos;i="5.77,282,1596492000"; d="scan'208";a="468612200" Received: from palace.lip6.fr ([132.227.105.202]) by mail2-relais-roc.national.inria.fr with ESMTP/TLS/AES256-SHA256; 20 Sep 2020 14:08:58 +0200 From: Julia Lawall To: Bjorn Helgaas Cc: kernel-janitors@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 14/14] PCI/P2PDMA: drop double zeroing Date: Sun, 20 Sep 2020 13:26:26 +0200 Message-Id: <1600601186-7420-15-git-send-email-Julia.Lawall@inria.fr> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1600601186-7420-1-git-send-email-Julia.Lawall@inria.fr> References: <1600601186-7420-1-git-send-email-Julia.Lawall@inria.fr> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org sg_init_table zeroes its first argument, so the allocation of that argument doesn't have to. the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ expression x; @@ x = - kzalloc + kmalloc (...) ... sg_init_table(x,...) // Signed-off-by: Julia Lawall --- drivers/pci/p2pdma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -u -p a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c --- a/drivers/pci/p2pdma.c +++ b/drivers/pci/p2pdma.c @@ -762,7 +762,7 @@ struct scatterlist *pci_p2pmem_alloc_sgl struct scatterlist *sg; void *addr; - sg = kzalloc(sizeof(*sg), GFP_KERNEL); + sg = kmalloc(sizeof(*sg), GFP_KERNEL); if (!sg) return NULL;