Messages in this thread | | | Date | Tue, 1 Jul 2003 01:02:57 +0100 (IST) | From | Mel Gorman <> | Subject | Re: [BUG] 2.5.73 Scheduling while atomic with taskfile IO and high memory |
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On Mon, 30 Jun 2003, Zwane Mwaikambo wrote:
> Could you try selecting your specific IDE chipset (or all), it doesn't > look like PIO is getting along famously with various other bits. I also > noticed TCQ, do you have any TCQ capable IDE devices? >
Tried many things, in no particular order
o PCI chipsets disabled o Disabled TCQ (device doesn't support it anyway) o DMA disabled and ide_setup_dma() stub function added so it'll compile o PCI Generic chipset support enabled o Intel PIIX chipset support enabled o All chipset under the sun supported
All come up with the same errors. The following workarounds let it boot
o Removing inc_preempt_count() and dec_preempt_count() from kmap_atomic() and kunmap_atomic() o Disabling high memory o Disabling taskfile IO
A quickie patch to sched.c shows that preempt_count() keeps incrementing for each time the sleeping while atomic message is printed by the cpu_idle() thread
-- Mel Gorman - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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