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Date:   Mon, 8 Oct 2018 02:17:09 +0000
From:   Nadav Amit <>
To:     Ingo Molnar <>
CC:     "" <>, Ingo Molnar <>,
        "" <>,
        "" <>,
        Thomas Gleixner <>,
        Jan Beulich <>,
        Josh Poimboeuf <>,
        Linus Torvalds <>,
        Peter Zijlstra <>,
        Andy Lutomirski <>
Subject: Re: [PATCH v9 04/10] x86: refcount: prevent gcc distortions

at 2:31 AM, Ingo Molnar <> wrote:

> * Nadav Amit <> wrote:
>>> Are you using defconfig or a reasonable distro-config for your tests?
>> I think it is best to take the kernel and run localyesconfig for testing.
> Ok, agreed - and this makes the numbers you provided pretty representative.
> Good - now that all of my concerns were addressed I'd like to merge the remaining 3 patches as 
> well - but they are conflicting with ongoing x86 work in tip:x86/core. The extable conflict is 
> trivial, the jump-label conflict a bit more involved.
> Could you please pick up the updated changelogs below and resolve the conflicts against 
> tip:master or tip:x86/build and submit the remaining patches as well?

For the record, I summarized my analysis of the poor function inlining
decisions in Linux in the following blog-post:


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