linux-kernel - Re: [RFC][PATCH 5/7] irq_work, smp: Allow irq_work on call_single

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Message-ID: <20200610132402.GB26639@lenoir>
Date:   Wed, 10 Jun 2020 15:24:03 +0200
From:   Frederic Weisbecker <frederic@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     tglx@...utronix.de, linux-kernel@...r.kernel.org, x86@...nel.org,
        cai@....pw, mgorman@...hsingularity.net, sfr@...b.auug.org.au,
        linux@...ck-us.net
Subject: Re: [RFC][PATCH 5/7] irq_work, smp: Allow irq_work on
 call_single_queue

On Fri, Jun 05, 2020 at 11:37:04AM +0200, Peter Zijlstra wrote:
> On Fri, May 29, 2020 at 03:36:41PM +0200, Peter Zijlstra wrote:
> > Maybe I can anonymous-union my way around it, dunno. I'll think about
> > it. I'm certainly not proud of this. But at least the BUILD_BUG_ON()s
> > should catch the more blatant breakage here.
> 
> How's this then? Differently ugly, but at least it compiles with that
> horrible struct randomization junk enabled.
> 
> ---
>  include/linux/irq_work.h  |   28 ++++++-------------
>  include/linux/sched.h     |    4 +-
>  include/linux/smp.h       |   25 ++++++-----------
>  include/linux/smp_types.h |   66 ++++++++++++++++++++++++++++++++++++++++++++++
>  kernel/sched/core.c       |    6 ++--
>  kernel/smp.c              |   18 ------------
>  6 files changed, 89 insertions(+), 58 deletions(-)


Looks good. I don't have a better idea.

Thanks!

Reviewed-by: Frederic Weisbecker <frederic@...nel.org>