[lkml]   [2017]   [Jun]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RFC][PATCHv3 2/5] printk: introduce printing kernel thread
On (06/30/17 15:16), Petr Mladek wrote:
> I wonder if I could add some counter into task_struct.
> It might be configurable. I am not sure if people would
> want this enabled on production systems where the level
> of messages should be lower anyway.

I don't think it really matters which one of the tasks has issued way
too many printk()-s. it's the state of the logbuf that matters after
all. was it one task or 5 tasks, or 15 that pushed logbuf far ahead of
console_seq, we need to throttle all of new printk() calls anyway.
just because logbuf is already too far and we need to give console a
chache to catch up. so let's activate throttling based on the logbuf
state (those seq numbers).


 \ /
  Last update: 2017-06-30 23:14    [W:0.087 / U:4.416 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site