Re: [PATCH v5 0/2] printk: Console owner and waiter logic cleanup

Sergey Senozhatsky
2018-01-22T10:38:39Z

On (01/22/18 19:28), Sergey Senozhatsky wrote:
> On (01/22/18 17:56), Sergey Senozhatsky wrote:
> [..]
> > Assume the following,
>
> But more importantly we are missing another huge thing - console_unlock().

IOW, not every console_unlock() is from vprintk_emit(). We can have
console_trylock() -> console_unlock() being from non-preemptible context,
etc. And then irq work to flush printk_safe -> printk_deferred all the time.

-ss