linux-kernel - Re: [PATCH] x86/oprofile/ppro: Do not use __this

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Message-ID: <alpine.DEB.2.20.1711081258540.1937@nanos>
Date:   Wed, 8 Nov 2017 13:01:03 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Borislav Petkov <bp@...e.de>
cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Fengguang Wu <fengguang.wu@...el.com>,
        "oprofile-list@...ts.sf.net" <oprofile-list@...ts.sf.net>,
        Robert Richter <rric@...nel.org>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        the arch/x86 maintainers <x86@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86/oprofile/ppro: Do not use __this_cpu* accessors in
 preemptible context

On Wed, 8 Nov 2017, Borislav Petkov wrote:

> On Wed, Nov 08, 2017 at 11:48:28AM +0100, Thomas Gleixner wrote:
> > AFAICT, ppro_setup_ctrs() has the same issue
> 
> Here's an updated patch:

Sorry for misleading you. That function is actually correct as it is called
from the cpu online callback with interrupts disabled.

I'll drop that hunk again.

Thanks,

	tglx