linux-kernel - Re: [PATCH 12/36] sched_ext: Implement BPF extensible scheduler class

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Date:   Tue, 14 Nov 2023 09:07:32 -1000
From:   Tejun Heo <tj@...nel.org>
To:     Andrea Righi <andrea.righi@...onical.com>
Cc:     torvalds@...ux-foundation.org, mingo@...hat.com,
        peterz@...radead.org, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de,
        bristot@...hat.com, vschneid@...hat.com, ast@...nel.org,
        daniel@...earbox.net, andrii@...nel.org, martin.lau@...nel.org,
        joshdon@...gle.com, brho@...gle.com, pjt@...gle.com,
        derkling@...gle.com, haoluo@...gle.com, dvernet@...a.com,
        dschatzberg@...a.com, dskarlat@...cmu.edu, riel@...riel.com,
        changwoo@...lia.com, himadrics@...ia.fr, memxor@...il.com,
        linux-kernel@...r.kernel.org, bpf@...r.kernel.org,
        kernel-team@...a.com
Subject: Re: [PATCH 12/36] sched_ext: Implement BPF extensible scheduler class

On Mon, Nov 13, 2023 at 03:04:24PM -0500, Andrea Righi wrote:
> > +#ifdef CONFIG_SCHED_DEBUG
> > +static const char *scx_ops_enable_state_str[] = {
> > +	[SCX_OPS_PREPPING]	= "prepping",
> > +	[SCX_OPS_ENABLING]	= "enabling",
> > +	[SCX_OPS_ENABLED]	= "enabled",
> > +	[SCX_OPS_DISABLING]	= "disabling",
> > +	[SCX_OPS_DISABLED]	= "disabled",
> > +};
> 
> We may want to move scx_ops_enable_state_str[] outside of
> CONFIG_SCHED_DEBUG, because we're using it later in print_scx_info()
> ("sched_ext: Print sched_ext info when dumping stack"), or we make
> print_scx_info() dependent of CONFIG_SCHED_DEBUG.

Yeah, Changwoo noticed the same problem. Will fix and post an updated patch.

Thanks.

-- 
tejun