linux-kernel - Re: [PATCH v5 07/36] lockdep: Annotate lockdep assertions for context analysis

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Message-ID: <ecb35204-ea13-488b-8d60-e21d4812902a@gmail.com>
Date: Fri, 19 Dec 2025 14:28:48 -0700
From: Bart Van Assche <bart.vanassche@...il.com>
To: Marco Elver <elver@...gle.com>
Cc: Peter Zijlstra <peterz@...radead.org>, Boqun Feng <boqun.feng@...il.com>,
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Subject: Re: [PATCH v5 07/36] lockdep: Annotate lockdep assertions for context
 analysis

On 12/19/25 2:16 PM, Marco Elver wrote:
> It's basically an escape hatch to defer to dynamic analysis where the
> limits of the static analysis are reached.

That's not how lockdep_assert_held() is used in the kernel. This macro
is more often than not used to document assumptions that can be verified
at compile time.

This patch seems like a step in the wrong direction to me because it
*suppresses* compile time analysis compile-time analysis is useful. I
think that this patch either should be dropped or that the __assume()
annotations should be changed into __must_hold() annotations.

Bart.