lkml.org 
[lkml]   [2003]   [Jul]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: PATCH : LEDs - possibly the most pointless kernel subsystem ever
John Bradford wrote:
>>>This patch adds an abstraction layer for programmable LED devices,
>>>hardware drivers for the Status LEDs found on some Intel PIIX4E based
>>>server hardware (notably the ISP1100 1U rackmount server) and LEDs wired
>>>to the parallel port data lines.
>>
>>I haven't had chance to test this yet, but I really like the idea - by
>>an amasing co-incidence, I was actually thinking about the possibility
>>of doing a parallel port connected front panel earlier today!
>>
>>Does anybody have any suggestions for recommended standard uses for
>>parallel port connected LEDs?
>>
>>Disk spinning up/disk ready
>>Root login active
>>
>>Any other suggestions?
>
>
> Ah, I just thought, for debugging purposes we could have LEDs for:
>
> * BKL taken
> * Servicing interrupt
> * Kernel stack usage > 2K

Maybe also:
* 100% CPU usage
* Toggle each jiffie (help detect interrupts disabled)
* User control for things like cpu/harddrive temp...
* and of course, Morse code ;)

Have fun,

Eli
--------------------. "If it ain't broke now,
Eli Carter \ it will be soon." -- crypto-gram
eli.carter(a)inet.com `-------------------------------------------------

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:47    [W:1.311 / U:0.120 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site