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* [ANNOUNCE] 3.6.2-rt4
@ 2012-10-20 19:40 Thomas Gleixner
  2012-10-22 21:54 ` Paul Gortmaker
       [not found] ` <op.wmk8f6m96426ze@localhost.localdomain>
  0 siblings, 2 replies; 26+ messages in thread
From: Thomas Gleixner @ 2012-10-20 19:40 UTC (permalink / raw)
  To: LKML; +Cc: linux-rt-users

Dear RT Folks,

I'm pleased to announce the 3.6.2-rt4 release. rt4 is just an update
to 3.6.2. The not announced 3.6.1-rt3 is an intermediate release with
a single change.

Changes since 3.6.1-rt2:

	* Remove the softirq noise printk

The delta patch against 3.6.1-rt2 is appended below and can be found here

  http://www.kernel.org/pub/linux/kernel/projects/rt/3.6/incr/patch-3.6.1-rt2-rt3.patch.xz

The RT patch against 3.6.2 can be found here:

  http://www.kernel.org/pub/linux/kernel/projects/rt/3.6/patch-3.6.2-rt4.patch.xz

The split quilt queue is available at:

  http://www.kernel.org/pub/linux/kernel/projects/rt/3.6/patches-3.6.2-rt4.tar.xz

Enjoy,

	tglx

---------->

Index: linux-stable/kernel/softirq.c
===================================================================
--- linux-stable.orig/kernel/softirq.c
+++ linux-stable/kernel/softirq.c
@@ -468,8 +468,6 @@ static void do_single_softirq(int which,
  */
 static void do_current_softirqs(int need_rcu_bh_qs)
 {
-	int retry = 0;
-
 	while (current->softirqs_raised) {
 		int i = __ffs(current->softirqs_raised);
 		unsigned int pending, mask = (1U << i);
@@ -496,10 +494,6 @@ static void do_current_softirqs(int need
 		}
 		unlock_softirq(i);
 		WARN_ON(current->softirq_nestcnt != 1);
-		if (++retry == 20) {
-			printk(KERN_ERR "Crap, %s looping forever in softirq\n",
-			       current->comm);
-		}
 	}
 }
 
Index: linux-stable/localversion-rt
===================================================================
--- linux-stable.orig/localversion-rt
+++ linux-stable/localversion-rt
@@ -1 +1 @@
--rt2
+-rt3

^ permalink raw reply	[flat|nested] 26+ messages in thread
* Re: [ANNOUNCE] 3.6.2-rt4
@ 2012-10-26 21:45 Uwaysi Bin Kareem
  2012-10-26 21:54 ` Paul Gortmaker
                   ` (2 more replies)
  0 siblings, 3 replies; 26+ messages in thread
From: Uwaysi Bin Kareem @ 2012-10-26 21:45 UTC (permalink / raw)
  To: linux-rt-users

Hiya, got a bit busy.

http://paradoxuncreated.com/tmp/_config3_6_2local

gcc version is the current ubuntu 12.04 one.

Peace Be With You.

^ permalink raw reply	[flat|nested] 26+ messages in thread
* Re: [ANNOUNCE] 3.6.2-rt4
@ 2012-10-29 20:39 Ove Karlsen
  0 siblings, 0 replies; 26+ messages in thread
From: Ove Karlsen @ 2012-10-29 20:39 UTC (permalink / raw)
  To: tglx, linux-rt-users

Hiya, I am switching email-client currently, so excuse a bit of chaos.

I am reading 
https://rt.wiki.kernel.org/index.php/Frequently_Asked_Questions#What_sort_of_real-time_performance_should_I_expect.3F

I think it sounds really interesting that you have 10-30uS latencies 
back in 2007. The concept sounds thorough and tried then. So I shouldn`t 
expect any big SMI messing things up, on my core2duo right?

I think I really wanna get this to work. No solutions? :)

I am reading more here:

https://rt.wiki.kernel.org/index.php/CONFIG_PREEMPT_RT_Patch

"Works ok, but frequency scaling has to be turned off for decent 
results. A task run at 1 kHz repetition rate with low load was found to 
be t-distributed with 4 degrees of freedom, with 1% value 0.9842 ms, 99% 
value 1.0103 ms (ideal realtime performance would get exactly 1 ms for 
both values), with the frequency governor set to "performance"."

Quite low. So he has got it running with low jitter, on a core 2 quad.

SMI sounds not much of a problem then. I want this guys. Altough as said 
I am buying a computer, particulary for low-jitter, we can always try 
and make this work on my older box in the mean time.

Remember the prob is with threadirqs on mainline aswell. Could it be 
some clockproblem? A task for the thirsty bughunter, and patch-glory to 
mainline.

-- 
Fred være med deg / Peace Be with You,
Ove Karlsen
http://www.paradoxuncreated.com
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^ permalink raw reply	[flat|nested] 26+ messages in thread

end of thread, other threads:[~2012-10-29 20:56 UTC | newest]

Thread overview: 26+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-10-20 19:40 [ANNOUNCE] 3.6.2-rt4 Thomas Gleixner
2012-10-22 21:54 ` Paul Gortmaker
     [not found] ` <op.wmk8f6m96426ze@localhost.localdomain>
     [not found]   ` <alpine.LFD.2.02.1210222029480.2756@ionos>
2012-10-22 21:05     ` Uwaysi Bin Kareem
2012-10-23  6:52       ` Thomas Gleixner
2012-10-23 22:53     ` Uwaysi Bin Kareem
2012-10-24  5:01       ` Sven-Thorsten Dietrich
2012-10-24  8:16         ` Uwaysi Bin Kareem
2012-10-24  9:59           ` Thomas Gleixner
2012-10-24 10:48             ` Uwaysi Bin Kareem
2012-10-24 14:27               ` Thomas Gleixner
2012-10-24 17:06                 ` Uwaysi Bin Kareem
2012-10-24 18:38                   ` Thomas Gleixner
2012-10-24 18:47                     ` Uwaysi Bin Kareem
2012-10-24 19:24                       ` Thomas Gleixner
2012-10-24 19:32                         ` Uwaysi Bin Kareem
2012-10-24 19:49                           ` Thomas Gleixner
2012-10-24 19:57                             ` Uwaysi Bin Kareem
2012-10-25 21:21                               ` Thomas Gleixner
2012-10-26 14:24                               ` Paul Gortmaker
  -- strict thread matches above, loose matches on Subject: below --
2012-10-26 21:45 Uwaysi Bin Kareem
2012-10-26 21:54 ` Paul Gortmaker
2012-10-26 22:24   ` Uwaysi Bin Kareem
2012-10-27  0:17     ` Sven-Thorsten Dietrich
2012-10-27  9:41 ` Uwaysi Bin Kareem
2012-10-27  9:50 ` Uwaysi Bin Kareem
2012-10-29 20:39 Ove Karlsen

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