Re: [PATCH printk v3 3/7] printk: Keep non-panic-CPUs out of console lock

[Sergey Senozhatsky]

On (23/07/17 21:52), John Ogness wrote:
> 
> When in a panic situation, non-panic CPUs should avoid holding the
> console lock so as not to contend with the panic CPU. This is already
> implemented with abandon_console_lock_in_panic(), which is checked
> after each printed line. However, non-panic CPUs should also avoid
> trying to acquire the console lock during a panic.
> 
> Modify console_trylock() to fail and console_lock() to block() when
> called from a non-panic CPU during a panic.
> 
> Signed-off-by: John Ogness <john.ogness@xxxxxxxxxxxxx>

Reviewed-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>