Messages in this thread | | | Date | Tue, 29 Jul 2003 15:43:20 -0500 | From | Eli Carter <> | Subject | Re: PATCH : LEDs - possibly the most pointless kernel subsystem ever |
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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 `-------------------------------------------------
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