Message ID | 20190301140348.25175-1-will.deacon@arm.com |
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Delivered-To: patch@linaro.org Received: by 2002:a02:5cc1:0:0:0:0:0 with SMTP id w62csp768948jad; Fri, 1 Mar 2019 06:04:05 -0800 (PST) X-Google-Smtp-Source: APXvYqysbPm8Gg94ybXmlizxOtP7FJ76ynmnfvLIAeH6MaTZ9wwV6sgo+wHOSYXPD67w0LIl1fnV X-Received: by 2002:a63:1260:: with SMTP id 32mr5043601pgs.278.1551449045177; Fri, 01 Mar 2019 06:04:05 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1551449045; cv=none; d=google.com; s=arc-20160816; b=feZiahquFh6bgfb78eAuUISo3x4mala35iBhA0SXpuyQdGdSS3jG4LKsdqURqEb1G8 T4yL3nxQe5ZyEi/x08puQS9ODocCjH9mtdaTNo+PftOiZEoouR2B93IKkCko+hPSRNHe 3uMaqBK5mhaNnWCjc/1b+HfMzgqA+GDvdgpxHcO8AFQ/o8yP9+IZOoi9YksyHihpIr6K uK7RcsTxeHMOzat9KY3Wt1w0VNAf1Hu4aJnzdEnAzpMkAhi6kGUpQ/jbMPaDIgQ1kRJZ BuISoiCF7YeIMfakgE1IFOXnEV1YY/d3LwsS//JCxVnkFJT4CH/qub8vYS3KGK15H2KU KxyA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:message-id:date:subject:cc:to:from; bh=IzTvKMeb9kwjnpiVqPLyNhBdOjGhlfF/qwO3VX+9Dx8=; b=lJ4U4ICftDXg80sxSQgzCBUsp431Ik7yDCFYCNhLEEMtJ6WCWMDcvjEJpDmzrSTlfJ Ok6irx+GTrPF25eSrw8oHchAFVqXorQIz6yTnccqLMVGKA5UiQNIdCyoekJvRyZ1z0/Q 5CQEzbCosavUgiQ9Rl2sA1W/f2bjWr1D7pIl3RyD3BIckKeK/6oXZVJyjj8BUX5+eZ6R PWW0zbG4A7hB09KJd8lPxX/ZPeHvpb7AsrFBLpn93rMFsDbV2fqUg78rboba51Xxo7Lp 61T1pMJWeqzcO1zHBRscE8jTiU+Xh3o+EUg4kND0QxgkPFA99SJGrGCas8BVezVNdVVw BDuw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: <linux-kernel-owner@vger.kernel.org> Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id v32si19965133pgn.342.2019.03.01.06.04.04; Fri, 01 Mar 2019 06:04:05 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388327AbfCAOED (ORCPT <rfc822;mike.holmes@linaro.org> + 31 others); Fri, 1 Mar 2019 09:04:03 -0500 Received: from foss.arm.com ([217.140.101.70]:35464 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728149AbfCAOED (ORCPT <rfc822;linux-kernel@vger.kernel.org>); Fri, 1 Mar 2019 09:04:03 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 91DF4A78; Fri, 1 Mar 2019 06:04:01 -0800 (PST) Received: from fuggles.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 54CD83F720; Fri, 1 Mar 2019 06:03:58 -0800 (PST) From: Will Deacon <will.deacon@arm.com> To: linux-arch@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Will Deacon <will.deacon@arm.com>, "Paul E. McKenney" <paulmck@linux.ibm.com>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Michael Ellerman <mpe@ellerman.id.au>, Arnd Bergmann <arnd@arndb.de>, Peter Zijlstra <peterz@infradead.org>, Andrea Parri <andrea.parri@amarulasolutions.com>, Palmer Dabbelt <palmer@sifive.com>, Daniel Lustig <dlustig@nvidia.com>, David Howells <dhowells@redhat.com>, Alan Stern <stern@rowland.harvard.edu>, Linus Torvalds <torvalds@linux-foundation.org>, "Maciej W. Rozycki" <macro@linux-mips.org>, Paul Burton <paul.burton@mips.com>, Ingo Molnar <mingo@kernel.org>, Yoshinori Sato <ysato@users.sourceforge.jp>, Rich Felker <dalias@libc.org>, Tony Luck <tony.luck@intel.com> Subject: [PATCH 00/20] Remove Mysterious Macro Intended to Obscure Weird Behaviours (mmiowb()) Date: Fri, 1 Mar 2019 14:03:28 +0000 Message-Id: <20190301140348.25175-1-will.deacon@arm.com> X-Mailer: git-send-email 2.11.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: <linux-kernel.vger.kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org |
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Remove Mysterious Macro Intended to Obscure Weird Behaviours (mmiowb())
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Love the acronym, and the series looks good to me. Michael - can you check (or maybe you already did?) that this works for ppc too, and doesn't have any gotcha's? Linus
Linus Torvalds <torvalds@linux-foundation.org> writes: > Love the acronym, and the series looks good to me. > > Michael - can you check (or maybe you already did?) that this works > for ppc too, and doesn't have any gotcha's? Yeah it looks fine to me. I gave it a quick boot with a patch to count how many mb()s we actually issue in the spin_unlock() path and it's definitely hitting that path correctly. So it works at least as well as the old code. cheers