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From: Peter Zijlstra <peterz@infradead.org>
To: Frederic Weisbecker <frederic@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/2] sched: Always print out preempt dynamic state
Date: Tue, 8 Jun 2021 15:56:57 +0200	[thread overview]
Message-ID: <YL93KX2go+Qwlhgg@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20210608120442.93587-3-frederic@kernel.org>

On Tue, Jun 08, 2021 at 02:04:42PM +0200, Frederic Weisbecker wrote:
> Previously the preempt dynamic mode wasn't printed out if it wasn't
> overriden with the "preempt=" boot option.
> 
> But now that the default preempt dynamic behaviour can be selected at
> Kconfig time, we can't assume anymore that preempt=full is the default.
> The only way to retrieve that information is to browse the kernel config
> file.
> 
> Better print it out unconditionally then.
> 
> Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
> ---
>  kernel/sched/core.c | 21 ++++++++++++++++-----
>  1 file changed, 16 insertions(+), 5 deletions(-)
> 
> diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> index df47a8275c37..6b883adad8f7 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -6262,6 +6262,21 @@ int sched_dynamic_mode(const char *str)
>  
>  void sched_dynamic_update(int mode)
>  {
> +	switch (mode) {
> +		case preempt_dynamic_none:
> +			pr_info("Dynamic Preempt: none\n");
> +			break;
> +		case preempt_dynamic_voluntary:
> +			pr_info("Dynamic Preempt: voluntary\n");
> +			break;
> +		case preempt_dynamic_full:
> +			pr_info("Dynamic Preempt: full\n");
> +			break;
> +		default:
> +			pr_info("Dynamic Preempt: incorrect\n");
> +			return;
> +	}

Indent fail; for vim, use: set cino=(0:0

      reply	other threads:[~2021-06-08 13:57 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-08 12:04 [PATCH 0/2] sched: Define default preempt dynamic boot mode on Kconfig Frederic Weisbecker
2021-06-08 12:04 ` [PATCH 1/2] sched: Add default dynamic preempt mode Kconfig Frederic Weisbecker
2021-06-08 13:55   ` Peter Zijlstra
2021-06-08 14:04     ` Peter Zijlstra
2021-06-09 11:27       ` Frederic Weisbecker
2021-06-09 11:13     ` Frederic Weisbecker
2021-06-08 13:55   ` Peter Zijlstra
2021-06-09 11:25     ` Frederic Weisbecker
2021-06-08 12:04 ` [PATCH 2/2] sched: Always print out preempt dynamic state Frederic Weisbecker
2021-06-08 13:56   ` Peter Zijlstra [this message]

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