Re: [RFC/RFT] Reinject Alt+SysRq when no hotkeys have been pressed

[Dmitry Torokhov <dmitry.torokhov@gmail.com>]

On Wednesday, November 10, 2010 12:13:20 pm Jason Wessel wrote:
> On 11/09/2010 01:34 AM, Dmitry Torokhov wrote:
> > Now that KGDB knows how to release keys that have been pressed when
> > entering the debugger the only issue left is that SysRq handler is too
> > greedy and always swallows Alt+SysRq, causing print screen hotkey to
> > stop working. The solution is to re-inject the key combo when user
> > releases SysRq without pressing any other keys. The patch below does
> > just that and also releases keys that have been pressed before we enter
> > SysRq mode.
> > 
> > Note that it depends on a patch to input core that will stop events
> > injected by one input handler from reaching the very same input handler
> > (attached).
> > 
> > Comments/testing/suggestion are sought after.
> 
> I applied both patches and tested all the known failures cases I had on
> my list and it looks good, for the non kdb cases.
> 
> Tested-by: Jason Wessel <jason.wessel@windriver.com>
> 
> However...  I also tested this with the kdb keyboard release patchs plus
> your latest 2 patches we appear to have and incompatibility.  The
> behavior is that when exiting kdb, the print screen trigger fires.  I
> had not had a chance to debug it as of yet.
> 

Hmm, let me think...

-- 
Dmitry