linux-kernel - Re: [PATCH v4 02/35] compiler-context-analysis: Add infrastructure for Context Analysis with Clang

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Message-ID: <20251211114431.GD3911114@noisy.programming.kicks-ass.net>
Date: Thu, 11 Dec 2025 12:44:31 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: Marco Elver <elver@...gle.com>
Cc: Boqun Feng <boqun.feng@...il.com>, Ingo Molnar <mingo@...nel.org>,
	Will Deacon <will@...nel.org>,
	"David S. Miller" <davem@...emloft.net>,
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	Eric Dumazet <edumazet@...gle.com>,
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	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
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Subject: Re: [PATCH v4 02/35] compiler-context-analysis: Add infrastructure
 for Context Analysis with Clang

On Thu, Nov 20, 2025 at 03:49:04PM +0100, Marco Elver wrote:
> +/**
> + * __guarded_by - struct member and globals attribute, declares variable
> + *                only accessible within active context
> + *
> + * Declares that the struct member or global variable is only accessible within
> + * the context entered by the given context guard. Read operations on the data
> + * require shared access, while write operations require exclusive access.
> + *
> + * .. code-block:: c
> + *
> + *	struct some_state {
> + *		spinlock_t lock;
> + *		long counter __guarded_by(&lock);
> + *	};
> + */
> +# define __guarded_by(...)		__attribute__((guarded_by(__VA_ARGS__)))

I must express pure hatred for this '.. code-block:: c' thing.