Messages in this thread | | | Date | Wed, 4 May 2005 10:22:41 +0200 | From | Ingo Molnar <> | Subject | Re: [patch] Real-Time Preemption, -RT-2.6.12-rc3-V0.7.46-01 |
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* Lee Revell <rlrevell@joe-job.com> wrote:
> On Fri, 2005-04-22 at 08:27 +0200, Ingo Molnar wrote: > > i have released the -V0.7.46-01 Real-Time Preemption patch, which can be > > downloaded from the usual place: > > > > http://redhat.com/~mingo/realtime-preempt/ > > Ingo, > > With Mingming's patch to resolve the ext3 allocate-with-reservation > latency, it looks like we are finally getting close to the lower limit > that can be achieved with PREEMPT_DESKTOP. I've attached the trace of > the lowest latency over several days of testing with > 2.6.12-rc3-RT-V0.7.46-02 + Mingming's patch. It's only 127 usecs, and > IIRC you mentioned previously that this code path can't be made > preemptible in !PREEMPT_RT.
yeah, signal delivery will have to stay atomic in !PREEMPT_RT kernels.
> Since Mingming's patch will have to live in -mm for a while, can it be > added to the RT patchset as well?
i think so - i'll add it to the next patch.
Ingo
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