[lkml]   [2003]   [Jun]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [BUG] 2.5.73 Scheduling while atomic with taskfile IO and high memory
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

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
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:46    [W:0.037 / U:1.476 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site