linux-kernel - Re: [PATCH 2/5] sched/vtime: get rid of generic vtime_task

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Message-ID: <ZcK-xETH4ny8zMbW@localhost.localdomain>
Date: Wed, 7 Feb 2024 00:20:36 +0100
From: Frederic Weisbecker <frederic@...nel.org>
To: Alexander Gordeev <agordeev@...ux.ibm.com>
Cc: Ingo Molnar <mingo@...nel.org>, Michael Ellerman <mpe@...erman.id.au>,
	Heiko Carstens <hca@...ux.ibm.com>,
	Vasily Gorbik <gor@...ux.ibm.com>, linux-kernel@...r.kernel.org,
	linux-s390@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH 2/5] sched/vtime: get rid of generic vtime_task_switch()
 implementation

Le Sun, Jan 28, 2024 at 08:58:51PM +0100, Alexander Gordeev a écrit :
> The generic vtime_task_switch() implementation gets built only
> if __ARCH_HAS_VTIME_TASK_SWITCH is not defined, but requires an
> architecture to implement arch_vtime_task_switch() callback at
> the same time, which is confusing.
> 
> Further, arch_vtime_task_switch() is implemented for 32-bit PowerPC
> architecture only and vtime_task_switch() generic variant is rather
> superfluous.
> 
> Simplify the whole vtime_task_switch() wiring by moving the existing
> generic implementation to PowerPC.
> 
> Signed-off-by: Alexander Gordeev <agordeev@...ux.ibm.com>

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