linux-kernel - Re: [PATCH 4/5] s390/irq,nmi: do not include <linux/vtime.h> header

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Date: Wed, 7 Feb 2024 15:14:58 +0100
From: Alexander Gordeev <agordeev@...ux.ibm.com>
To: Heiko Carstens <hca@...ux.ibm.com>
Cc: Frederic Weisbecker <frederic@...nel.org>, Ingo Molnar <mingo@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Vasily Gorbik <gor@...ux.ibm.com>, linux-kernel@...r.kernel.org,
        linux-s390@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH 4/5] s390/irq,nmi: do not include <linux/vtime.h> header

On Mon, Jan 29, 2024 at 10:51:44AM +0100, Heiko Carstens wrote:
> It is confusing when the patch subject is "do not include.." and all
> what this patch is doing is to add two includes. I see what this is
> doing: getting rid of the implicit include of asm/vtime.h most likely
> via linux/hardirq.h, but that's not very obvious.
> 
> Anyway:
> Acked-by: Heiko Carstens <hca@...ux.ibm.com>

Thank you, Heiko!

Whether this wording sounds better?

s390/irq,nmi: include <asm/vtime.h> header directly                         

update_timer_sys() and update_timer_mcck() are inlines used for             
CPU time accounting from the interrupt and machine-check handlers.          
These routines are specific to s390 architecture, but included              
via <linux/vtime.h> header implicitly. Avoid the extra loop and             
include <asm/vtime.h> header directly.