linux-kernel - Re: [RFC PATCH v11 for 4.15 01/24] Restartable sequences system call

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20171116204604.52m63ngws7zmyuac@hirez.programming.kicks-ass.net>
Date:   Thu, 16 Nov 2017 21:46:04 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:     "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        Boqun Feng <boqun.feng@...il.com>,
        Andy Lutomirski <luto@...capital.net>,
        Dave Watson <davejwatson@...com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-api <linux-api@...r.kernel.org>,
        Paul Turner <pjt@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Russell King <linux@....linux.org.uk>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, Andrew Hunter <ahh@...gle.com>,
        Andi Kleen <andi@...stfloor.org>, Chris Lameter <cl@...ux.com>,
        Ben Maurer <bmaurer@...com>, rostedt <rostedt@...dmis.org>,
        Josh Triplett <josh@...htriplett.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Michael Kerrisk <mtk.manpages@...il.com>,
        Alexander Viro <viro@...iv.linux.org.uk>
Subject: Re: [RFC PATCH v11 for 4.15 01/24] Restartable sequences system call

On Thu, Nov 16, 2017 at 08:37:58PM +0000, Mathieu Desnoyers wrote:
> I usually never space-align with open parenthesis "(". Is it a coding
> style requirement of the kernel for multi-line if () conditions ?

Not sure, but it is the predominant pattern in most of the code.

> Would the following replatement code be ok ?
> 
>         if (unlikely(flags & RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL)) {
>                 if ((flags & (RSEQ_CS_FLAG_NO_RESTART_ON_MIGRATE
>                                 | RSEQ_CS_FLAG_NO_RESTART_ON_PREEMPT)) !=
>                                 (RSEQ_CS_FLAG_NO_RESTART_ON_MIGRATE
>                                 | RSEQ_CS_FLAG_NO_RESTART_ON_PREEMPT))
>                         return -EINVAL;

I really prefer the operator at the end,

git grep "&&$" | wc -l
40708

git grep "^[[:space:]]*&&" | wc -l
3901