linux-kernel - Re: [PATCH] sched: Split preemption model selection between DYNAMIC & !DYNAMIC

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Date:   Wed, 10 Nov 2021 17:56:36 +0100
From:   Frederic Weisbecker <frederic@...nel.org>
To:     Valentin Schneider <valentin.schneider@....com>
Cc:     Mike Galbraith <efault@....de>, Marco Elver <elver@...gle.com>,
        linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH] sched: Split preemption model selection between DYNAMIC
 & !DYNAMIC

On Wed, Nov 10, 2021 at 02:45:45PM +0000, Valentin Schneider wrote:
> diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
> index 7896d30d90f7..3b3226ffbafa 100644
> --- a/kernel/trace/trace.c
> +++ b/kernel/trace/trace.c
> @@ -4271,11 +4271,11 @@ print_trace_header(struct seq_file *m, struct trace_iterator *iter)
>  		   entries,
>  		   total,
>  		   buf->cpu,
> -#if defined(CONFIG_PREEMPT_NONE)
> +#if defined(CONFIG_PREEMPT_NONE_BUILD)
>  		   "server",
> -#elif defined(CONFIG_PREEMPT_VOLUNTARY)
> +#elif defined(CONFIG_PREEMPT_VOLUNTARY_BUILD)
>  		   "desktop",
> -#elif defined(CONFIG_PREEMPT)
> +#elif defined(CONFIG_PREEMPT_BUILD)
>  		   "preempt",
>  #elif defined(CONFIG_PREEMPT_RT)
>  		   "preempt_rt",

I also found those:

arch/powerpc/kernel/interrupt.c:                if (IS_ENABLED(CONFIG_PREEMPT)) {
arch/powerpc/kernel/traps.c:           IS_ENABLED(CONFIG_PREEMPT) ? " PREEMPT" : "",