Re: [PATCH net-next 00/24] locking: Introduce nested-BH locking.

From: Jakub Kicinski
Date: Fri Dec 15 2023 - 17:51:14 EST

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On Fri, 15 Dec 2023 18:07:19 +0100 Sebastian Andrzej Siewior wrote:
> The proposed way out is to introduce explicit per-CPU locks for
> resources which are protected by local_bh_disable() and use those only
> on PREEMPT_RT so there is no additional overhead for !PREEMPT_RT builds.

As I said at LPC, complicating drivers with odd locking constructs
is a no go for me.

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In reply to: Sebastian Andrzej Siewior: "[PATCH net-next 22/24] net: mellanox, nfp, sfc: Use nested-BH locking for XDP redirect."
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