lkml.org 
[lkml]   [2010]   [Aug]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/3] Input: sysrq - drop tty argument from sysrq ops handlers
> I have a patch to drop the lock in serial_core.h, I'll post that
> tomorrow hopefully, just checking if there's any objection there ? The

Fundamentally - no. However the impact it has on a lot of the drivers
will be significant and you'll be submitting a huge patch pile to fix up
all the locking assumptions (for one it means port->tty might change
across any call that ends up in sysrq)

> serial drivers might need to be audited a bit to make sure they cope
> with the lock being dropped and re-acquired around the sysrq call.

Architecturally I think it would make more sense to add a new sysrq
helper which merely sets a flag, and check that flag at the end of the IRQ
when dropping the lock anyway.

Otherwise it'll be a huge amount of work to even build test all those
consoles.

Alan


\
 
 \ /
  Last update: 2010-08-04 10:59    [W:0.068 / U:0.388 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site