linux-kernel - Re: [PATCH v2 1/1] sched_ext: Add error logging for dsq creation failures

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Message-ID: <20260109103916.93454-1-dongtai.guo@linux.dev>
Date: Fri,  9 Jan 2026 18:39:16 +0800
From: George Guo <dongtai.guo@...ux.dev>
To: arighi@...dia.com
Cc: changwoo@...lia.com,
	dongtai.guo@...ux.dev,
	etsal@...a.com,
	guodongtai@...inos.cn,
	linux-kernel@...r.kernel.org,
	sched-ext@...ts.linux.dev,
	tj@...nel.org,
	void@...ifault.com
Subject: Re: [PATCH v2 1/1] sched_ext: Add error logging for dsq creation failures

> Huh? No, we already get an error message both in dmesg and in stdout when
> scx_bpf_create_dsq() fails, so I don't think this is required.
> 
> Are you sure you were not hitting other issues when your scheduler failed
> to load silently?


Hi Andrea,
Here take an instance.
You need add bpf_printk in BPF_STRUCT_OPS_SLEEPABLE(central_init), 
even with dmesg when central_init fails, as central_init have multiply
error return.

Thanks!