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

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: <CAHp75VeCHXfgXOgx_FwS197rnF6QcAstJwf4cr4g1bdkstx1xw@mail.gmail.com>
Date:   Fri, 9 Jun 2017 21:23:52 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Steven Rostedt <rostedt@...dmis.org>
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, Jun 9, 2017 at 9:04 PM, Steven Rostedt <rostedt@...dmis.org> wrote:
> On Fri,  9 Jun 2017 15:27:36 +0200
> Vitaly Kuznetsov <vkuznets@...hat.com> wrote:


>> +#if IS_ENABLED(CONFIG_HYPERV)
>
> Hmm, this is new to me. I know you can use IS_ENABLED() inside C code,
> but I've never seen it used for preprocessor directives. This usually
> is just:
>
> #ifdef CONFIG_HYPERV
>
> Other than that, this looks fine to me.

That is the magic of IS_ENABLED(), IS_BUILTIN() macros.
So, the code above is fine as is.

-- 
With Best Regards,
Andy Shevchenko