From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Tue, 18 Apr 2006 16:00:03 +0200
From: Philippe Gerum <rpm@xenomai.org>
MIME-Version: 1.0
Subject: Re: [Adeos-main] CONFIG_PREEMPT doesn't work with ADEOS
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To: Bernhard Walle <bernhard.walle@domain.hid>
Cc: adeos-main@gna.org

Bernhard Walle wrote:
> Hello,
> 
> I have a kernel 2.6.15.6 with
> http://download.gna.org/adeos/patches/v2.6/i386/adeos-ipipe-2.6.15-i386-1.2-03.patch
> patch. In this configuration, CONFIG_PREEMPT doesn't work any more,
> i.e. the kernel is not preempted.
> 
> With the kernel without ADEOS patch, it works fine. A test program is
> at http://www.bwalle.de/temp/kern-preempt.tar.bz2.
> 
> Do you know what's wrong?
> 

This should improve things quite a bit:

--- arch/i386/kernel/entry.S~	2006-03-21 14:34:51.000000000 +0100
+++ arch/i386/kernel/entry.S	2006-04-18 15:38:50.000000000 +0200
@@ -231,7 +231,7 @@

  #ifdef CONFIG_PREEMPT
  ENTRY(resume_kernel)
-	CLI
+	cli
  	cmpl $0,TI_preempt_count(%ebp)	# non-zero preempt_count ?
  	jnz restore_nocheck
  need_resched:

-- 

Philippe.