On (05/28/19 17:02), Tetsuo Handa wrote:
> On 2019/05/28 13:22, Sergey Senozhatsky wrote:
> > On (05/28/19 12:21), Tetsuo Handa wrote:
> > [..]
> Dmitry's patch is changing only the header line (in other words, per printk()
> call).
> Since op_p->handler(key) is out of KERN_UNSUPPRESSED effect, the body lines
> might
> not be printed.
Right.
> I think that we need a way to pass KERN_UNSUPPRESSED from printk()
> calls invoked from op_p->handler(key).
Right. That's what the per-CPU context bit address.
> You are trying to omit passing KERN_UNSUPPRESSED by utilizing implicit printk
> context information. But doesn't such attempt resemble find_printk_buffer() ?
Adding KERN_UNSUPPRESSED to all printks down the op_p->handler()
line is hardly possible. At the same time I'd really prefer not
to have buffering for sysrq.
-ss
