linux-kernel - Re: [PATCH v8 10/10] tracing/hyper-v: trace hyperv_mmu_flush_tlb

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Message-ID: <1497034433.12817.17.camel@tiscali.nl>
Date:   Fri, 09 Jun 2017 20:53:53 +0200
From:   Paul Bolle <pebolle@...cali.nl>
To:     Steven Rostedt <rostedt@...dmis.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Vitaly Kuznetsov <vkuznets@...hat.com>,
        devel@...uxdriverproject.org, "x86@...nel.org" <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Jork Loeser <Jork.Loeser@...rosoft.com>,
        Simon Xiao <sixiao@...rosoft.com>,
        Andy Lutomirski <luto@...nel.org>
Subject: Re: [PATCH v8 10/10] tracing/hyper-v: trace
 hyperv_mmu_flush_tlb_others()

On Fri, 2017-06-09 at 14:32 -0400, Steven Rostedt wrote:
> I'm sure it works, but it just adds one more way of doing the same
> thing. I thought that was what perl was always criticized for, and why
> people usually prefer python. Don't get me wrong, I prefer oysters over
> snakes. But I just wanted to point out the lack of consistency here.

A major benefit is that
    #if IS_ENABLED(CONFIG_HYPERV)

is shorter than
    #if defined(CONFIG_HYPERV) || defined(CONFIG_HYPERV_MODULE)

and less prone to typos.


Paul Bolle