[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?

Received on Mon Nov 04 16:23:39 2002

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