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Commit 6c4afa79 authored by John Ogness's avatar John Ogness Committed by Petr Mladek
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printk: Prepare for SRCU console list protection



Provide an NMI-safe SRCU protected variant to walk the console list.

Note that all console fields are now set before adding the console
to the list to avoid the console becoming visible by SCRU readers
before being fully initialized.

This is a preparatory change for a new console infrastructure which
operates independent of the console BKL.

Suggested-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarJohn Ogness <john.ogness@linutronix.de>
Acked-by: default avatarMiguel Ojeda <ojeda@kernel.org>
Reviewed-by: default avatarPaul E. McKenney <paulmck@kernel.org>
Reviewed-by: default avatarPetr Mladek <pmladek@suse.com>
Signed-off-by: default avatarPetr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20221116162152.193147-4-john.ogness@linutronix.de
parent d9a4af56
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