linux-kernel - Re: [PATCH v3 5/7] sched/preempt: add PREEMPT

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Message-ID: <20220209174801.GA547263@lothringen>
Date:   Wed, 9 Feb 2022 18:48:01 +0100
From:   Frederic Weisbecker <frederic@...nel.org>
To:     Mark Rutland <mark.rutland@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, ardb@...nel.org,
        bp@...en8.de, catalin.marinas@....com, dave.hansen@...ux.intel.com,
        james.morse@....com, joey.gouly@....com, juri.lelli@...hat.com,
        linux-kernel@...r.kernel.org, luto@...nel.org, mingo@...hat.com,
        peterz@...radead.org, tglx@...utronix.de,
        valentin.schneider@....com, will@...nel.org
Subject: Re: [PATCH v3 5/7] sched/preempt: add PREEMPT_DYNAMIC using static
 keys

On Wed, Feb 09, 2022 at 03:35:33PM +0000, Mark Rutland wrote:
> +config HAVE_PREEMPT_DYNAMIC_KEY
> +	bool
> +	depends on JUMP_LABEL

This should probably be:

     depends on HAVE_ARCH_JUMP_LABEL && CC_HAS_ASM_GOTO
     select JUMP_LABEL

Otherwise you may run into trouble if CONFIG_JUMP_LABEL is initially n.

Thanks.