RSDL cpu scheduler for -mm
cover RSDL cpu scheduler for -mm
What follows is the same patch series that constitutes the RDSL "Rotating Staircase DeadLine" cpu scheduler resynced for 2.6.21-rc2-mm2.
A rollup patch that can be applied directly to 2.6.21-rc2-mm2 is here:
http://ck.kolivas.org/patches/staircase-deadline/2.6.21-rc2-mm2-sched-rsdl.patch
and the separate patches that will follow are available here:
http://ck.kolivas.org/patches/staircase-deadline/2.6.21-rc2-mm2/
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Quoted 2 lines · On Wed, 7 Mar 2007 12:26:42 +1100 Con Kolivas <[email protected]> wrote:
What follows is the same patch series that constitutes the RDSL "Rotating Staircase DeadLine" cpu scheduler resynced for 2.6.21-rc2-mm2.
Big oops early in boot on x86_64 SMP, in rq_bitmap_error+0x97/0x9f.
I stubbed it out with a `return MAX_RT_PRIO;' (I think) but it then oopsed differently. Before netconsole had come up, no serial console, no digital camera.
There's stuff in http://userweb.kernel.org/~akpm/ck/ - you can probably boot that kernel on your own machine.
I need to do rc3-mm1 now. I might find some time to poke at this further after that, but I have to leave for a week in .jp and it'll be squeezy, sorry.
Quoted 12 lines · On Wed, 7 Mar 2007 17:43:45 -0800 Andrew Morton <[email protected]>…
Quoted 2 lines · On Wed, 7 Mar 2007 12:26:42 +1100 Con Kolivas <[email protected]> wrote:
What follows is the same patch series that constitutes the RDSL "Rotating Staircase DeadLine" cpu scheduler resynced for 2.6.21-rc2-mm2.
Big oops early in boot on
x86_64SMP, inrq_bitmap_error+0x97/0x9f.I stubbed it out with a `return
MAX_RT_PRIO;' (I think) but it then oopsed differently. Before netconsole had come up, no serial console, no digital camera.
Quoted 6 lines
There's stuff in http://userweb.kernel.org/~akpm/ck/ - you can probably boot that kernel on your own machine.
I need to do rc3-mm1 now. I might find some time to poke at this further after that, but I have to leave for a week in .jp and it'll be squeezy, sorry.
well it boots os dual pIII and quad powerpc.
The powerpc says
Scheduler bitmap error - bitmap being reconstructed..
during bootup. But it didn't crash like the Nocona machine.
Quoted 14 lines · On Wed, 7 Mar 2007 18:54:30 -0800 Andrew Morton <[email protected]>…
Quoted 12 lines · On Wed, 7 Mar 2007 17:43:45 -0800 Andrew Morton <[email protected]>…
Quoted 2 lines · On Wed, 7 Mar 2007 12:26:42 +1100 Con Kolivas <[email protected]> wrote:
What follows is the same patch series that constitutes the RDSL "Rotating Staircase DeadLine" cpu scheduler resynced for 2.6.21-rc2-mm2.
Big oops early in boot on
x86_64SMP, inrq_bitmap_error+0x97/0x9f.I stubbed it out with a `return
MAX_RT_PRIO;' (I think) but it then oopsed differently. Before netconsole had come up, no serial console, no digital camera.
Quoted 9 lines
Quoted 6 lines
There's stuff in http://userweb.kernel.org/~akpm/ck/ - you can probably boot that kernel on your own machine.
I need to do rc3-mm1 now. I might find some time to poke at this further after that, but I have to leave for a week in .jp and it'll be squeezy, sorry.
well it boots os dual pIII and quad powerpc.
It also boots OK on a very similar but somewhat older Nocona machine. Perhaps due to config changes: http://userweb.kernel.org/~akpm/ck/config-ok.txt
Quoted 1 line · Andrew Morton
On Wed, 7 Mar 2007 18:54:30 -0800 Andrew Morton <[email protected]>
Quoted 1 line · wrote:
Quoted 1 line
On Wed, 7 Mar 2007 17:43:45 -0800 Andrew Morton
Quoted 20 lines · <[email protected]> wrote:
Quoted 20 lines
Quoted 19 lines
On Wed, 7 Mar 2007 12:26:42 +1100
Quoted 3 lines · Con Kolivas
What follows is the same patch series that constitutes the RDSL "Rotating Staircase DeadLine" cpu scheduler resynced for 2.6.21-rc2-mm2.
Big oops early in boot on
x86_64SMP, inrq_bitmap_error+0x97/0x9f.I stubbed it out with a `return
MAX_RT_PRIO;' (I think) but it then oopsed differently. Before netconsole had come up, no serial console, no digital camera.There's stuff in http://userweb.kernel.org/~akpm/ck/ - you can probably boot that kernel on your own machine.
I need to do rc3-mm1 now. I might find some time to poke at this further after that, but I have to leave for a week in .jp and it'll be squeezy, sorry.
Quoted 5 lines
Quoted 1 line
well it boots os dual pIII and quad powerpc.
It also boots OK on a very similar but somewhat older Nocona machine. Perhaps due to config changes:
http://userweb.kernel.org/~akpm/ck/config-ok.txt
Ok I just remembered that not only did I expect the cpu task to never be scheduled and it _might_ be scheduled on sched_init, it is actually _consciously_ scheduled on hotplug cpu which I have no way of handling at the moment. On both your configs I noticed you had hotplug cpu enabled, but perhaps it isn't really being used on the more conservative config. So this is something I already know I need to handle. Did your ppc that had the "bitmap error" have hotplug cpu enabled? It might be an unrelated bug^Wphenomenon.
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Quoted 5 lines · On Thu, 8 Mar 2007 16:25:05 +1100 Con Kolivas <[email protected]> wrote:
Quoted 3 lines
It also boots OK on a very similar but somewhat older Nocona machine. Perhaps due to config changes:
http://userweb.kernel.org/~akpm/ck/config-ok.txt
Quoted 8 lines
Ok I just remembered that not only did I expect the cpu task to never be scheduled and it _might_ be scheduled on
sched_init, it is actually _consciously_ scheduled on hotplug cpu which I have no way of handling at the moment. On both your configs I noticed you had hotplug cpu enabled, but perhaps it isn't really being used on the more conservative config. So this is something I already know I need to handle. Did your ppc that had the "bitmap error" have hotplug cpu enabled? It might be an unrelated bug^Wphenomenon.
The powerpc config has CONFIG_HOTPLUG_CPU=n
Quoted 21 lines · Andrew Morton
Quoted 12 lines · On Wed, 7 Mar 2007 17:43:45 -0800 Andrew Morton <[email protected]>…
Quoted 2 lines · On Wed, 7 Mar 2007 12:26:42 +1100 Con Kolivas <[email protected]> wrote:
What follows is the same patch series that constitutes the RDSL "Rotating Staircase DeadLine" cpu scheduler resynced for 2.6.21-rc2-mm2.
Big oops early in boot on
x86_64SMP, inrq_bitmap_error+0x97/0x9f.I stubbed it out with a `return
MAX_RT_PRIO;' (I think) but it then oopsed differently. Before netconsole had come up, no serial console, no digital camera.Quoted 6 lines
There's stuff in http://userweb.kernel.org/~akpm/ck/ - you can probably boot that kernel on your own machine.
I need to do rc3-mm1 now. I might find some time to poke at this further after that, but I have to leave for a week in .jp and it'll be squeezy, sorry.
Quoted 7 lines
well it boots os dual pIII and quad powerpc.
The powerpc says
Scheduler bitmap error - bitmap being reconstructed..
during bootup. But it didn't crash like the Nocona machine.
Ah thanks. Sorry I have a very busy day at work and am unable to do anything about it till tonight. I could imagine on nocona this would be due to the idle task being scheduled on init - which it is not supposed to do but if you read the comment in sched_init it says it *might. I have no way of handling that at the moment because I wasn't sure it ever happened any more. As for the powerpc.. I have no idea (from where I am at the moment which it would be totally inappopriate for me to try to debug :P), sorry.
--
-ck
Quoted 1 line · Andrew Morton
On Wed, 7 Mar 2007 17:43:45 -0800 Andrew Morton <[email protected]>
Quoted 20 lines · wrote:
Quoted 13 lines
On Wed, 7 Mar 2007 12:26:42 +1100
Quoted 3 lines · Con Kolivas
What follows is the same patch series that constitutes the RDSL "Rotating Staircase DeadLine" cpu scheduler resynced for 2.6.21-rc2-mm2.
Big oops early in boot on
x86_64SMP, inrq_bitmap_error+0x97/0x9f.I stubbed it out with a `return
MAX_RT_PRIO;' (I think) but it then oopsed differently. Before netconsole had come up, no serial console, no digital camera.Quoted 6 lines
There's stuff in http://userweb.kernel.org/~akpm/ck/ - you can probably boot that kernel on your own machine.
I need to do rc3-mm1 now. I might find some time to poke at this further after that, but I have to leave for a week in .jp and it'll be squeezy, sorry.
Quoted 7 lines
well it boots os dual pIII and quad powerpc.
The powerpc says
Scheduler bitmap error - bitmap being reconstructed..
during bootup. But it didn't crash like the Nocona machine.
Any chance I could get the config of this powerpc so I can try building and running one on qemu? I can't seem to get this bitmap error on x86*.
Thanks!
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