From: Peter Zijlstra <peterz@infradead.org>
To: x86@kernel.org
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org,
kees@kernel.org, acarmina@redhat.com, jpoimboe@kernel.org,
mark.rutland@arm.com, torvalds@linuxfoundation.org
Subject: [RFC 0/8] x86: Mad WARN() hackery
Date: Mon, 02 Jun 2025 16:42:01 +0200 [thread overview]
Message-ID: <20250602144201.301974933@infradead.org> (raw)
Hi,
I've been annoyed at how WARN() works for quite some time, and Alessandro has
been trying to make it even worse.
This is an attempt at making WARN() generate less crap for the most common
cases. It is somewhat magical, but appears to be working for the simple cases
I've tried. Specifically, it moves the __warn_printf() into the exception for
the case of 3 or less arguments.
This would hopefully allow Allesandro to put the kunit hackery in report_bug()
and not spread it around all the WARN() sites like he does now.
next reply other threads:[~2025-06-02 14:50 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-02 14:42 Peter Zijlstra [this message]
2025-06-02 14:42 ` [RFC 1/8] x86: Provide assembly __bug_table helpers Peter Zijlstra
2025-06-02 14:42 ` [RFC 2/8] bug: Add BUGFLAG_FORMAT infrastructure Peter Zijlstra
2025-06-02 14:42 ` [RFC 3/8] bug: Clean up CONFIG_GENERIC_BUG_RELATIVE_POINTERS Peter Zijlstra
2025-06-02 14:42 ` [RFC 4/8] bug: Allow architectures to provide __WARN_printf() Peter Zijlstra
2025-06-02 14:42 ` [RFC 5/8] x86_64/bug: Add BUG_FORMAT basics Peter Zijlstra
2025-06-02 14:42 ` [RFC 6/8] x86_64/bug: Implement __WARN_printf() Peter Zijlstra
2025-06-02 15:02 ` Linus Torvalds
2025-06-02 15:49 ` Peter Zijlstra
2025-06-02 16:38 ` Linus Torvalds
2025-06-02 18:09 ` Peter Zijlstra
2025-06-02 20:04 ` Josh Poimboeuf
2025-06-02 20:16 ` Josh Poimboeuf
2025-06-02 20:33 ` Andrew Cooper
2025-06-02 21:57 ` Peter Zijlstra
2025-06-02 22:01 ` Peter Zijlstra
2025-06-02 23:10 ` Linus Torvalds
2025-06-03 13:04 ` Peter Zijlstra
2025-06-03 22:23 ` David Laight
2025-06-02 14:42 ` [RFC 7/8] x86/bug: Implement WARN_ONCE() Peter Zijlstra
2025-06-02 14:42 ` [RFC 8/8] x86: Clean up default rethunk warning Peter Zijlstra
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