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From: Shrikanth Hegde <sshegde@linux.ibm.com>
To: Ingo Molnar <mingo@kernel.org>, linux-kernel@vger.kernel.org
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Valentin Schneider <vschneid@redhat.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	"Gautham R . Shenoy" <gautham.shenoy@amd.com>
Subject: Re: [PATCH 04/10] sched/debug: Increase SCHEDSTAT_VERSION to 16
Date: Fri, 8 Mar 2024 22:10:07 +0530	[thread overview]
Message-ID: <14d29fdf-ef10-48e6-a102-f1f0bb27c181@linux.ibm.com> (raw)
In-Reply-To: <20240308105901.1096078-5-mingo@kernel.org>



On 3/8/24 4:28 PM, Ingo Molnar wrote:
> We changed the order of definitions within 'enum cpu_idle_type',
> which changed the order of [CPU_MAX_IDLE_TYPES] columns in
> show_schedstat().
> 

> +++ b/kernel/sched/stats.c
> @@ -113,7 +113,7 @@ void __update_stats_enqueue_sleeper(struct rq *rq, struct task_struct *p,
>   * Bump this up when changing the output format or the meaning of an existing
>   * format, so that tools can adapt (or abort)
>   */
> -#define SCHEDSTAT_VERSION 15
> +#define SCHEDSTAT_VERSION 16

Please add the info about version, and change of the order 
briefly in Documentation/scheduler/sched-stats.rst as well.

One recent user that I recollect is sched scoreboard. Version number should 
be able to help the users when they it is breaking their scripts. 

+Gautham, Any thoughts?

>  
>  static int show_schedstat(struct seq_file *seq, void *v)
>  {

  reply	other threads:[~2024-03-08 16:40 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-08 10:58 [PATCH -v4 00/10] sched/balancing: Misc updates & cleanups Ingo Molnar
2024-03-08 10:58 ` [PATCH 01/10] sched/balancing: Switch the 'DEFINE_SPINLOCK(balancing)' spinlock into an 'atomic_t sched_balance_running' flag Ingo Molnar
2024-03-12 12:00   ` [tip: sched/core] " tip-bot2 for Ingo Molnar
2024-03-15  9:25   ` [PATCH 01/10] " Shrikanth Hegde
2024-03-08 10:58 ` [PATCH 02/10] sched/balancing: Remove reliance on 'enum cpu_idle_type' ordering when iterating [CPU_MAX_IDLE_TYPES] arrays in show_schedstat() Ingo Molnar
2024-03-08 13:26   ` Vincent Guittot
2024-03-12 12:00   ` [tip: sched/core] " tip-bot2 for Shrikanth Hegde
2024-03-08 10:58 ` [PATCH 03/10] sched/balancing: Change 'enum cpu_idle_type' to have more natural definitions Ingo Molnar
2024-03-12 12:00   ` [tip: sched/core] " tip-bot2 for Ingo Molnar
2024-03-08 10:58 ` [PATCH 04/10] sched/debug: Increase SCHEDSTAT_VERSION to 16 Ingo Molnar
2024-03-08 16:40   ` Shrikanth Hegde [this message]
2024-03-12 10:01     ` Ingo Molnar
2024-03-14  5:21       ` Gautham R. Shenoy
2024-03-14  6:04         ` Swapnil Sapkal
2024-03-15  4:37           ` Shrikanth Hegde
2024-03-15  9:06             ` Swapnil Sapkal
2024-03-15  9:20               ` Shrikanth Hegde
2024-03-15 14:03                 ` Swapnil Sapkal
2024-03-12 12:00   ` [tip: sched/core] " tip-bot2 for Ingo Molnar
2024-03-08 10:58 ` [PATCH 05/10] sched/debug: Allow CONFIG_SCHEDSTATS even on !KERNEL_DEBUG kernels Ingo Molnar
2024-03-12 12:00   ` [tip: sched/core] " tip-bot2 for Ingo Molnar
2024-03-08 10:58 ` [PATCH 06/10] sched/balancing: Change comment formatting to not overlap Git conflict marker lines Ingo Molnar
2024-03-12 12:00   ` [tip: sched/core] " tip-bot2 for Ingo Molnar
2024-03-08 10:58 ` [PATCH 07/10] sched/balancing: Fix comments (trying to) refer to NOHZ_BALANCE_KICK Ingo Molnar
2024-03-08 12:03   ` Vincent Guittot
2024-03-12 12:00   ` [tip: sched/core] " tip-bot2 for Ingo Molnar
2024-03-08 10:58 ` [PATCH 08/10] sched/balancing: Update run_rebalance_domains() comments Ingo Molnar
2024-03-08 12:02   ` Vincent Guittot
2024-03-12 12:00   ` [tip: sched/core] " tip-bot2 for Ingo Molnar
2024-03-08 10:59 ` [PATCH 09/10] sched/balancing: Vertically align the comments of 'struct sg_lb_stats' and 'struct sd_lb_stats' Ingo Molnar
2024-03-08 12:01   ` Vincent Guittot
2024-03-12 12:00   ` [tip: sched/core] " tip-bot2 for Ingo Molnar
2024-03-08 10:59 ` [PATCH 10/10] sched/balancing: Update comments in " Ingo Molnar
2024-03-08 12:01   ` Vincent Guittot
2024-03-12 12:00   ` [tip: sched/core] " tip-bot2 for Ingo Molnar

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