linux-kernel - Re: [PATCH v3 2/2] sched/numa: Add tracepoint that tracks the skipping of numa balancing due to cpuset memory pinning

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Message-ID: <720D1AD7-112F-462F-9ECF-A060670D62D4@oracle.com>
Date: Wed, 23 Apr 2025 16:50:15 +0000
From: Libo Chen <libo.chen@...cle.com>
To: Steven Rostedt <rostedt@...dmis.org>
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Subject: Re: [PATCH v3 2/2] sched/numa: Add tracepoint that tracks the
 skipping of numa balancing due to cpuset memory pinning



> On Apr 23, 2025, at 9:12 AM, Steven Rostedt <rostedt@...dmis.org> wrote:
> 
> On Wed, 23 Apr 2025 16:05:44 +0000
> Libo Chen <libo.chen@...cle.com> wrote:
> 
>> Also wondering if we can fail the build in this scenario so it will be easier to
>> catch this bug at the build time.
> 
> return -EPONYS ;-)
> 
> I wish. It's hard enough to catch this at runtime.
> 

Correct me if I'm wrong but can you disallow any passed-in pointers to be
dereferenced when TP_printk() is executed? This is something you can check
at the build time, right?

Libo

> -- Steve