[Linux-ia64] Re: O(1) scheduler fix for 2.5-ia64

From: David Mosberger <davidm_at_napali.hpl.hp.com>
Date: 2002-11-05 11:22:01
>>>>> On Mon, 4 Nov 2002 19:53:07 +0100, Erich Focht <efocht@ess.nec.de> said:

  Erich> Hi David, this problem is wellknown and I actually thought
  Erich> that it was solved. But it looks like the complex
  Erich> prepare_arch_switch() etc. macros didn't make it into the 2.5
  Erich> kernels for IA64. They are needed on IA64 because we have to
  Erich> release the runqueue lock during context switch. This is
  Erich> similar to sparc64. Thanks to John Hawks for noticing this.

Yes, this seems to have fallen through the cracks.  Can you remind me
what the deadlock scenario looked like?

	--david
Received on Mon Nov 04 16:23:39 2002

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