linux-kernel - Re: [PATCH v5 3/8] x86/mm/tlb: Open-code on_each_cpu_cond_mask() for tlb_is_not

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Date:   Thu, 18 Feb 2021 08:28:27 +0000
From:   Christoph Hellwig <hch@...radead.org>
To:     Nadav Amit <namit@...are.com>
Cc:     Christoph Hellwig <hch@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Rik van Riel <riel@...riel.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>
Subject: Re: [PATCH v5 3/8] x86/mm/tlb: Open-code on_each_cpu_cond_mask() for
 tlb_is_not_lazy()

On Thu, Feb 18, 2021 at 08:24:23AM +0000, Nadav Amit wrote:
> In general, thanks for the feedback (I will reply after I follow your
> feedback). I do have a general question - I thought it was decided that
> clarity should be preferred over following the 80-column limit. Please let
> me know if I misunderstood.

To quote the coding style document:

"The preferred limit on the length of a single line is 80 columns.

Statements longer than 80 columns should be broken into sensible chunks,
unless exceeding 80 columns significantly increases readability and does
not hide information."

While a lot of the decisions are subjective, just spilling over for no
good reason does not significantly improve readability in general.