Re: [PATCH 02/24] preempt: Introduce HARDIRQ_DISABLE_BITS

Peter Zijlstra <[email protected]> Mon, 3 Aug 2026 11:10:56 +0200
Newsgroups org.kernel.vger.rust-for-linux,org.kernel.vger.linux-kernel
Message-ID <[email protected]>
On Fri, Jul 31, 2026 at 01:30:03PM -0700, Boqun Feng wrote:
> From: Boqun Feng <[email protected]>
> 
> In order to support preempt_disable()-like interrupt disabling, that is,
> using part of preempt_count() to track interrupt disabling nested level,
> change the preempt_count() layout to contain 8-bit HARDIRQ_DISABLE
> count.
> 
> Signed-off-by: Lyude Paul <[email protected]>
> Signed-off-by: Boqun Feng <[email protected]>
> Link: https://patch.msgid.link/[email protected]

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