linux-kernel - Re: [PATCH v3 1/1] local_lock: Move this_cpu_ptr() notation from internal to main header.

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Message-ID: <20250630130732.GK1613376@noisy.programming.kicks-ass.net>
Date: Mon, 30 Jun 2025 15:07:32 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: linux-kernel@...r.kernel.org, linux-rt-devel@...ts.linux.dev,
	tglx@...utronix.de, Ingo Molnar <mingo@...hat.com>,
	Will Deacon <will@...nel.org>, Waiman Long <longman@...hat.com>,
	Boqun Feng <boqun.feng@...il.com>,
	Alexei Starovoitov <alexei.starovoitov@...il.com>
Subject: Re: [PATCH v3 1/1] local_lock: Move this_cpu_ptr() notation from
 internal to main header.

On Mon, Jun 30, 2025 at 09:51:38AM +0200, Sebastian Andrzej Siewior wrote:
> The local_lock.h is the main entry for the local_lock_t type and
> provides wrappers around internal functions prefixed with __ in
> local_lock_internal.h.
> 
> Move the this_cpu_ptr() dereference of the variable from the internal to
> the main header. Since it is all macro implemented, this_cpu_ptr() will
> still happen within the preempt/ IRQ disabled section.
> This will free the internal implementation (__) to be used on
> local_lock_t types which are local variables and must not be accessed
> via this_cpu_ptr().
> 
> Acked-by: Waiman Long <longman@...hat.com>
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>