2.6.33-rt6 [LWN.net]

From:		Thomas Gleixner <tglx@linutronix.de>
To:		LKML <linux-kernel@vger.kernel.org>
Subject:		[ANNOUNCE] 2.6.33-rt6
Date:		Fri, 12 Mar 2010 11:44:09 +0100 (CET)
Message-ID:		<alpine.LFD.2.00.1003121124120.22855@localhost.localdomain>
Cc:		rt-users <linux-rt-users@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>, Peter Zijlstra <peterz@infradead.org>, Steven Rostedt <rostedt@goodmis.org>, Clark Williams <williams@redhat.com>, nando@ccrma.Stanford.EDU, Carsten Emde <ce@ceag.ch>, Wu Zhangjin <wuzhangjin@gmail.com>, Nicholas Mc Guire <der.herr@hofr.at>
Archive-link:		Article, Thread

We are pleased to announce the next update to our new preempt-rt
series.

For those who wonder about -rt5. It's there as well, but the tag is
more or less a separation point.

Changes from -rt4 to -rt5:

  8fafaf5: v2.6.33-rt5
  f6e20d0: tracing: Define pid functions for all config combinations
  4216e30: vga console: Remove the CON_ATOMIC flag
  7033151: x86: Fix 32bit HIGHMEM=n compile
  c28c2c8: x86: highmem: Remove stale function prototype
  fb301a4: mm: highmem: Fix stale BUG_ON condition

Changes from -rt5 to -rt6:

 af5d4b6: v2.6.33-rt6
 1054085: Merge branch 'rt-2.6.33-queue' of git://dev.lemote.com/rt4ls into rt/2.6.33

 This brings MIPS back into the -RT world! 

  Thanks to Wu Zhangjin !!
 
 Note that the MIPS support is only tested on Loongson hardware so
 your milage with other MIPS incarnations may vary.

Known issues for -rt6:

  - load balancer induced latencies. Can be observed in extreme system
    overload situations (load avg > 1000), so probably not a real
    world issue, but still it shows a weak point.

  - rcu stalls on overload situations caused by exit_io_context() RCU
    read locked section which heavily contends on sleeping locks. Still
    under investigation.

Download locations:
   
   http://www.kernel.org/pub/linux/kernel/projects/rt/

Git development branch:
   git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/head

Git release branch:
   git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/2.6.33

Gitweb:
   http://git.kernel.org/?p=linux/kernel/git/tip/linux-2.6-t...

Information on the RT patch can be found at:

   http://rt.wiki.kernel.org/index.php/Main_Page
 
To build the 2.6.33-rt6 tree, the following patches should be
applied:

   http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.33....
   http://www.kernel.org/pub/linux/kernel/projects/rt/patch-...

Enjoy !

      tglx
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/