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Currently the printk safe buffers provide a form of recursion protection by redirecting to the safe buffers whenever printk() is recursively called. In preparation for removal of the safe buffers, provide an alternate explicit recursion protection. Recursion is limited to 3 levels per-CPU and per-context. Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20210715193359.25946-3-john.ogness@linutronix.de
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John Ogness
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Petr Mladek
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Jul 26, 2021
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