On (01/16/18 11:19), Petr Mladek wrote: [..] > > [1] https://marc.info/?l=linux-mm&m=145692016122716 > > Fixes: 6b97a20d3a79 ("printk: set may_schedule for some of console_trylock() callers") > > Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx> > > Reported-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> > > IMHO, this is a step in the right direction. > > Reviewed-by: Petr Mladek <pmladek@xxxxxxxx> > > I'll wait for Steven's review and push this into printk.git. > I'll also add your Acks for the other patches. > > Thanks for the patch and the various observations. thanks! a side note, our console output is still largely preemptible. a typical system acquires console_sem via console_lock() all the time, so we still can have "where is my printk output?" cases. for instance, my IDLE PREEMPT x86 box, has the following stats uptime 15 min # of console_lock() calls: 10981 // can sleep under console_sem # of vprintk_emit() calls: 825 // cannot sleep under console_sem -ss -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
