linux-kernel - Re: [PATCH v2 2/2] sched/numa: Add tracepoint that tracks the skipping of numa balancing due to cpuset memory pinning

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Message-ID: <20250326220620.60cec3b6@gandalf.local.home>
Date: Wed, 26 Mar 2025 22:06:20 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Libo Chen <libo.chen@...cle.com>
Cc: peterz@...radead.org, mgorman@...hsingularity.net, longman@...hat.com,
 linux-kernel@...r.kernel.org, mingo@...hat.com, tj@...nel.org
Subject: Re: [PATCH v2 2/2] sched/numa: Add tracepoint that tracks the
 skipping of numa balancing due to cpuset memory pinning

On Wed, 26 Mar 2025 17:40:02 -0700
Libo Chen <libo.chen@...cle.com> wrote:

> > +	TP_printk("comm=%s pid=%d tgid=%d ngid=%d mem_node_allowed_mask=%lx",  
> 
> 
> I cannot find a way to print out nodemask_t nicely here with %*pbl.
> So I fall back to just raw hex value. Will be grateful if someone
> knows a better way to print nodemask nicely in a tracepoint  

Ug.

I guess I need to add support for that. Both in the boot verifier as well
as in libtraceevent.

-- Steve