Re: [patch] Real-Time Preemption, -VP-2.6.9-rc4-mm1-U3

[Ingo Molnar]

* Bill Huey <bhuey@xxxxxxxx> wrote:

> On Fri, Oct 15, 2004 at 12:26:33PM +0200, Ingo Molnar wrote:
> > 
> > i have released the -U3 PREEMPT_REALTIME patch:
> > 
> >   http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc4-mm1-U3
> 
> Atomic violations:

ok, the rtc clock needs to go back to raw for the time being - the patch
below should fix it.

	Ingo

--- linux.old/arch/i386/kernel/time.c	
+++ linux.new/arch/i386/kernel/time.c	
@@ -81,7 +81,7 @@ unsigned long cpu_khz;	/* Detected as we
 
 extern unsigned long wall_jiffies;
 
-DECLARE_SPINLOCK(rtc_lock);
+DECLARE_RAW_SPINLOCK(rtc_lock);
 
 #include <asm/i8253.h>
 
--- linux.old/include/linux/mc146818rtc.h	
+++ linux.new/include/linux/mc146818rtc.h	
@@ -16,7 +16,7 @@
 #include <linux/spinlock.h>		/* spinlock_t */
 #include <asm/mc146818rtc.h>		/* register access macros */
 
-extern spinlock_t rtc_lock;		/* serialize CMOS RAM access */
+extern raw_spinlock_t rtc_lock;		/* serialize CMOS RAM access */
 
 /**********************************************************************
  * register summary
-
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