On (20/07/21 15:31), John Ogness wrote:
> With commit ("printk: use the lockless ringbuffer"), printk()
> started silently dropping messages without text because such
> records are not supported by the new printk ringbuffer.
> 
> Add support for such records.
> 
> Currently dataless records are denoted by INVALID_LPOS in order
> to recognize failed prb_reserve() calls. Change the ringbuffer
> to instead use two different identifiers (FAILED_LPOS and
> NO_LPOS) to distinguish between failed prb_reserve() records and
> successful dataless records, respectively.
> 
> Fixes: ("printk: use the lockless ringbuffer")
> Fixes: https://lkml.kernel.org/r/20200718121053.ga691...@elver.google.com
> Reported-by: Marco Elver <el...@google.com>
> Signed-off-by: John Ogness <john.ogn...@linutronix.de>

Applied to printk-rework, thanks.

        -ss

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