linux-kernel - Re: [PATCH v12 20/21] selftests/futex: Add futex_priv

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Message-ID: <31869a69-063f-44a3-a079-ba71b2506cce@sirena.org.uk>
Date: Tue, 27 May 2025 12:28:00 +0100
From: Mark Brown <broonie@...nel.org>
To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: linux-kernel@...r.kernel.org,
	André Almeida <andrealmeid@...lia.com>,
	Darren Hart <dvhart@...radead.org>,
	Davidlohr Bueso <dave@...olabs.net>, Ingo Molnar <mingo@...hat.com>,
	Juri Lelli <juri.lelli@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Valentin Schneider <vschneid@...hat.com>,
	Waiman Long <longman@...hat.com>
Subject: Re: [PATCH v12 20/21] selftests/futex: Add futex_priv_hash

On Wed, Apr 16, 2025 at 06:29:20PM +0200, Sebastian Andrzej Siewior wrote:
> Test the basic functionality of the private hash:
> - Upon start, with no threads there is no private hash.
> - The first thread initializes the private hash.
> - More than four threads will increase the size of the private hash if
>   the system has more than 16 CPUs online.

This newly added test is not running successfully on arm64, it looks
like it's just a straightforward integration issue:

# Usage: futex_priv_hash
#   -c    Use color
#   -g    Test global hash instead intead local immutable 
#   -h    Display this help message
#   -v L  Verbosity level: 0=QUIET 1=CRITICAL 2=INFO
# Usage: futex_priv_hash
#   -c    Use color
#   -g    Test global hash instead intead local immutable 
#   -h    Display this help message
#   -v L  Verbosity level: 0=QUIET 1=CRITICAL 2=INFO
not ok 1 selftests: futex: run.sh # exit=1

Full log:

   https://lava.sirena.org.uk/scheduler/job/1414260#L9910

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