Data [LWN.net]

Data

Posted May 7, 2008 14:08 UTC (Wed) by alex (subscriber, #1355)
In reply to: Monta Vista does hold your hand by sepreece
Parent article: How not to sell embedded Linux

I would like to see how much of mvista's code is in the mainline kernel and how much is in
their own distro kernels. Granted they have a better record than WR but it still doesn't look
like much in the grans scheme of things:


[linux-2.6.git] >git-log --pretty=format:"%ae" | wc -l
87767
[linux-2.6.git] >git-log --pretty=format:"%ae" | grep "mvista" | wc -l
569

(Log in to post comments)

Data

Posted May 7, 2008 14:21 UTC (Wed) by rvfh (subscriber, #31018) [Link]

The O(1) scheduler was developed by Robert Love while at Montavista IIRC.

Data

Posted May 8, 2008 21:43 UTC (Thu) by jzbiciak (✭ supporter ✭, #5246) [Link]

Huh? The O(1) scheduler was developed by Ingo Molnar while he was at RedHat.

Data

Posted May 9, 2008 7:08 UTC (Fri) by rvfh (subscriber, #31018) [Link]

http://www.linuxdevices.com/news/NS8778096476.html

O(1) != CONFIG_PREEMPT

Posted May 9, 2008 7:21 UTC (Fri) by jzbiciak (✭ supporter ✭, #5246) [Link]

I guess I missed where this is the O(1) scheduler? In fact, that press release is largely content free. It just says "It's Not RTLinux."

I think you're thinking of CONFIG_PREEMPT, not the O(1) scheduler.

Perhaps this patch (ingo-O1-sched/preempt-kernel-rml-2.4.18-rc1-ingo-K3-1.patch) is what confused you? It's Robert Love's preempt patch against Ingo Molnar's O(1) scheduler.... :-)