v2.6.23-rc1-rt0

v2.6.23-rc1-rt0

[Ingo Molnar]

[ repost with the correct subject line ]

i've released the v2.6.23-rc1-rt0 kernel, which can be downloaded from 
the usual place:
 
   http://redhat.com/~mingo/realtime-preempt/
 
as the rt0 name suggests it, this is a devel release, the first one 
after a rebase to 2.6.23-rc1. There's lots of changes and a reduction of 
50 patches (we are now at 320 patches) - so code from -rt is moving 
upstream at a steady pace. (latest bigger chunks that moved were CFS, 
lockstat, most of the -hrt queue, plus various fixes)
    
more info about the -rt patchset can be found in the RT wiki:
     
  http://rt.wiki.kernel.org
  
to build a 2.6.22.1-rt5 tree, the following patches should be applied:
 
  http://kernel.org/pub/linux/kernel/v2.6/testing/linux-2.6.23-rc1.tar.bz2
  http://redhat.com/~mingo/realtime-preempt/patch-2.6.23-rc1-rt0
  
	Ingo

Re: v2.6.23-rc1-rt0

[Ingo Molnar]

* Andi Kleen <andi@firstfloor.org> wrote:

> This patch is needed to build on x86-64 with only the tracing options, 
> but no preempt enabled.

thanks, applied.

	Ingo

Re: v2.6.23-rc1-rt0

[Frederik Deweerdt]

On Tue, Jul 24, 2007 at 02:12:27PM +0200, Ingo Molnar wrote:
> i've released the v2.6.23-rc1-rt0 kernel, which can be downloaded from 
> the usual place:
>  
>    http://redhat.com/~mingo/realtime-preempt/
Hi Ingo,

  CC      kernel/latency_hist.o
  kernel/latency_hist.c: In function 'u64_div':
  kernel/latency_hist.c:54: error: implicit declaration of function 'do_div'
  make[1]: *** [kernel/latency_hist.o] Error 1
  make: *** [kernel] Error 2

This was needed to compile rt0 with LATENCY_TRACE on i386:

Add asm/div64.h header to define do_div()

Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com>

--- kernel/latency_hist..ori	2007-07-24 16:04:20.000000000 +0200
+++ kernel/latency_hist.c	2007-07-24 16:04:50.000000000 +0200
@@ -15,6 +15,7 @@
 #include <linux/percpu.h>
 #include <linux/latency_hist.h>
 #include <asm/atomic.h>
+#include <asm/div64.h>
 
 typedef struct hist_data_struct {
 	atomic_t hist_mode; /* 0 log, 1 don't log */