On Mon, Oct 04, 2004 at 09:15:04PM +0900, Atsushi Nemoto wrote: > >>>>> On Tue, 3 Aug 2004 12:40:48 -0700, Jun Sun <jsun@xxxxxxxxxx> said: > jsun> Try the latest kernel. I checked preemption around 2.6.5 time > jsun> and I believe all the obvious problems are fixed then. > > Hi. Now I'm looking current (2.6.9-rc1) code. > > It lacks some preempt_disable/preempt_enable which were in > preempt-patch for 2.4 kernel. Are these all unnecessary at all? > They are necessary. > For example, fpu-emulation is not preemptive-safe, isn't it? > That is correct. I think the best thing to do right now is to go through 2.4 preemption patch and pick up the missing ones for 2.6. It will probably take me a little given other things on my hand. I strongly enourage someone else to take a shoot at it. The latest 2.4 MIPS preemption patch seems to be http://linux.junsun.net/patches/oss.sgi.com/experimental/030304-b.preempt-mips.patch Jun
