linux-kernel - Re: [PATCH 1/7] sched_ext: Use rhashtable_lookup() instead of rhashtable_lookup

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Message-ID: <aNQxuZxB2U87E7kE@slm.duckdns.org>
Date: Wed, 24 Sep 2025 08:00:25 -1000
From: Tejun Heo <tj@...nel.org>
To: Andrea Righi <arighi@...dia.com>
Cc: David Vernet <void@...ifault.com>, Changwoo Min <changwoo@...lia.com>,
	linux-kernel@...r.kernel.org, sched-ext@...ts.linux.dev
Subject: Re: [PATCH 1/7] sched_ext: Use rhashtable_lookup() instead of
 rhashtable_lookup_fast()

On Wed, Sep 24, 2025 at 10:26:24AM +0200, Andrea Righi wrote:
> > IRQ is disabled, so it is in RCU protected region but the lockdep annotation
> > isn't happy with it. :-( I'll revert the patch for now.
> 
> We just need this: https://lore.kernel.org/all/aL_4gCJibYMW0J98@gondor.apana.org.au/
> 
> With this one lockdep is happy.

Oh yeah, we can try switching again once that patch lands.

Thanks.

-- 
tejun