[PATCH printk v2 1/3] printk: move printk_info into separate array

[Petr Mladek]

On Sat 2020-09-19 00:40:19, John Ogness wrote:
> The majority of the size of a descriptor is taken up by meta data,
> which is often not of interest to the ringbuffer (for example,
> when performing state checks). Since descriptors are often
> temporarily stored on the stack, keeping their size minimal will
> help reduce stack pressure.
> 
> Rather than embedding the printk_info into the descriptor, create
> a separate printk_info array. The index of a descriptor in the
> descriptor array corresponds to the printk_info with the same
> index in the printk_info array. The rules for validity of a
> printk_info match the existing rules for the data blocks: the
> descriptor must be in a consistent state.
> 
> Signed-off-by: John Ogness <john.ogness at linutronix.de>

Reviewed-by: Petr Mladek <pmladek at suse.com>

Best Regards,
Petr