printk: ringbuffer: Add KUnit test

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The KUnit test validates the correct operation of the ringbuffer.
A separate dedicated ringbuffer is used so that the global printk
ringbuffer is not touched.

Co-developed-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://patch.msgid.link/20250612-printk-ringbuffer-test-v3-1-550c088ee368@linutronix.de
Signed-off-by: Petr Mladek <pmladek@suse.com>

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Thomas Weißschuh 2025-06-12 08:29:07 +02:00 • committed by Petr Mladek

parent 19272b37aa

commit 5ea2bcdfbf

5 changed files with 317 additions and 0 deletions

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12

init/Kconfig

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3

kernel/printk/.kunitconfig

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2

kernel/printk/Makefile

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5

kernel/printk/printk_ringbuffer.c

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295

kernel/printk/printk_ringbuffer_kunit_test.c

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