linux-kernel - Re: [PATCH] rcu: mollify sparse with RCU guard

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Date: Mon, 25 Mar 2024 21:28:32 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Johannes Berg <johannes@...solutions.net>
Cc: Boqun Feng <boqun.feng@...il.com>, rcu@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"Paul E. McKenney" <paulmck@...nel.org>,
	Frederic Weisbecker <frederic@...nel.org>,
	Josh Triplett <josh@...htriplett.org>,
	Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH] rcu: mollify sparse with RCU guard

On Mon, Mar 25, 2024 at 05:41:22PM +0100, Johannes Berg wrote:
> Also __acquire()/__release() are just empty macros without __CHECKER__.
> So not sure the indirection really is warranted for this special case.
> 
> I can add a comment in there, I guess, something like
> 
>  /* sparse doesn't actually "call" cleanup functions */
> 
> perhaps. That reminds me I forgot to CC Dan ...
> 

These are Sparse warnings, not Smatch warning... Smatch doesn't use any
of the Sparse locking annotations.  Smatch handles cleanup basically
correctly at this point.

regards,
dan carpenter