2.6.24.7-rt26 and 2.6.26.8-rt13

2.6.24.7-rt26 and 2.6.26.8-rt13

[Steven Rostedt]

We are pleased to announce the 2.6.24.7-rt26 and 2.6.26.8-rt13 trees,
which can be downloaded from the location:

  http://rt.et.redhat.com/download/

Information on the RT patch can be found at:

  http://rt.wiki.kernel.org/index.php/Main_Page

Changes since 2.6.26.6-rt12

  - Removed sched-prioritize-non-migrating-rt-tasks.patch that
    caused a bug in the scheduler.
   (Thanks to Arnaldo Carvalho de Melo for reporting the bug,
    and Gregory Haskins for finding the patch that caused it
    after I explained to him the problem)

Changes in both 2.6.24.7-rt26 and 2.6.26.8-rt13  (all by Thomas Gleixner)

  - trace-histogram: handle clock going backwards

  - interrupt enabled in irq fix

to build a 2.6.24.7-rt26 tree, the following patches should be applied:

  http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.24.tar.bz2
  http://kernel.org/pub/linux/kernel/v2.6/patch-2.6.24.7.bz2
  http://rt.et.redhat.com/download/patch-2.6.24.7-rt26.bz2


to build a 2.6.26.8-rt13 tree, the following patches should be applied:

  http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.26.tar.bz2
  http://kernel.org/pub/linux/kernel/v2.6/patch-2.6.26.8.bz2
  http://rt.et.redhat.com/download/patch-2.6.26.8-rt13.bz2


And like always, my RT version of Matt Mackall's ketchup will get this
for you nicely:

  http://people.redhat.com/srostedt/rt/tools/ketchup-0.9.8-rt3


The broken out patches are also available.

The git tree can now be compiled, we are now working on getting it to
boot ;-)  It is based off of the v2.6.28 tag.

  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-rt.git

-- Steve

RE: 2.6.24.7-rt26 and 2.6.26.8-rt13

[Lampersperger Andreas]

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Hi,

I'm using kernel 2.6.26.8-rt13 with CONFIG_DYNAMIC_FTRACE=y set.
When loading a kernel object the following message appear:

BUG: sleeping function called from invalid context insmod(1370) at include/asm/uaccess_32.h:560
in_atomic():0 [00000000], irqs_disabled():1
Pid: 1370, comm: insmod Not tainted 2.6.26.8-rt13-heros5 #8
 [<c011e13e>] __might_sleep+0xe5/0xea
 [<c011439a>] ftrace_modify_code+0x22/0xa6
 [<c0114364>] ? ftrace_test_p6nop+0x0/0xa
 [<c0162fb4>] __ftrace_update_code+0xed/0x2cf
 [<c0114364>] ? ftrace_test_p6nop+0x0/0xa
 [<c0163730>] ftrace_convert_nops+0x57/0x73
 [<c0163761>] ftrace_init_module+0x15/0x17
 [<c01491da>] sys_init_module+0x14c9/0x1a7d
 [<c016d89d>] ? generic_file_aio_read+0x49a/0x4d6
 [<c0311ef9>] ? sub_preempt_count+0xa2/0xb0
 [<c02180c4>] ? strpbrk+0x0/0x2b
 [<c019b7b9>] ? dput+0x34/0xe4
 [<c0104b31>] sysenter_past_esp+0x6a/0x99
 =======================

Is it not possible to use rt-patches and dynamic tracepoints?

-Andreas


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-------------------------------------------------------------------------------------------------------
Registergericht: Traunstein / Registry Court: HRB 275 – Sitz / Head Office: Traunreut
Aufsichtsratsvorsitzender / Chairman of Supervisory Board: Rainer Burkhard
Geschäftsführung / Management Board: Thomas Sesselmann (Vorsitzender / Chairman),
Michael Grimm, Matthias Fauser

E-Mail Haftungsausschluss / E-Mail Disclaimer: http://www.heidenhain.de/disclaimer

RE: 2.6.24.7-rt26 and 2.6.26.8-rt13

[Steven Rostedt]

On Wed, 21 Jan 2009, Lampersperger Andreas wrote:

> Hi,
> 
> I'm using kernel 2.6.26.8-rt13 with CONFIG_DYNAMIC_FTRACE=y set.
> When loading a kernel object the following message appear:
> 
> BUG: sleeping function called from invalid context insmod(1370) at include/asm/uaccess_32.h:560
> in_atomic():0 [00000000], irqs_disabled():1
> Pid: 1370, comm: insmod Not tainted 2.6.26.8-rt13-heros5 #8
>  [<c011e13e>] __might_sleep+0xe5/0xea
>  [<c011439a>] ftrace_modify_code+0x22/0xa6
>  [<c0114364>] ? ftrace_test_p6nop+0x0/0xa
>  [<c0162fb4>] __ftrace_update_code+0xed/0x2cf
>  [<c0114364>] ? ftrace_test_p6nop+0x0/0xa
>  [<c0163730>] ftrace_convert_nops+0x57/0x73
>  [<c0163761>] ftrace_init_module+0x15/0x17
>  [<c01491da>] sys_init_module+0x14c9/0x1a7d
>  [<c016d89d>] ? generic_file_aio_read+0x49a/0x4d6
>  [<c0311ef9>] ? sub_preempt_count+0xa2/0xb0
>  [<c02180c4>] ? strpbrk+0x0/0x2b
>  [<c019b7b9>] ? dput+0x34/0xe4
>  [<c0104b31>] sysenter_past_esp+0x6a/0x99
>  =======================
> 
> Is it not possible to use rt-patches and dynamic tracepoints?

No, it should. That is a bug, I'll try to reproduce it, could you send me 
your config.

Thanks,

-- Steve

RE: 2.6.26.8-rt13

[Lampersperger Andreas]

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Hello Steve,

I found the define CONFIG_EVENT_TRACER inconsistent used in 2.6.26.8-rt31 patch set:

It is declared in 

tracer-event-trace.patch (line 47) 

as EVENT_TRACER but it is used as CONFIG_EVENT_TRACE (without R at the end) in

arm-compile-fix.patch (line 5 and 22)
event-tracer-syscall-i386.patch (lines 19,31 and 43)
preempt-realtime-i386.patch (line 258)

I think, it should be fixed to CONFIG_EVENT_TRACER.

Should I provide a patch for this? 

--Andreas



> -----Original Message-----
> From: linux-rt-users-owner@vger.kernel.org [mailto:linux-rt-users-
> owner@vger.kernel.org] On Behalf Of Steven Rostedt
> Sent: Saturday, January 10, 2009 4:23 AM
> To: LKML; RT
> Cc: Ingo Molnar; Thomas Gleixner; Steven Rostedt
> Subject: 2.6.24.7-rt26 and 2.6.26.8-rt13
> 
> We are pleased to announce the 2.6.24.7-rt26 and 2.6.26.8-rt13 trees,
> which can be downloaded from the location:
> 
>   http://rt.et.redhat.com/download/
> 
> Information on the RT patch can be found at:
> 
>   http://rt.wiki.kernel.org/index.php/Main_Page
> 
> Changes since 2.6.26.6-rt12
> 
>   - Removed sched-prioritize-non-migrating-rt-tasks.patch that
>     caused a bug in the scheduler.
>    (Thanks to Arnaldo Carvalho de Melo for reporting the bug,
>     and Gregory Haskins for finding the patch that caused it
>     after I explained to him the problem)
> 
> Changes in both 2.6.24.7-rt26 and 2.6.26.8-rt13  (all by Thomas
> Gleixner)
> 
>   - trace-histogram: handle clock going backwards
> 
>   - interrupt enabled in irq fix
> 
> to build a 2.6.24.7-rt26 tree, the following patches should be applied:
> 
>   http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.24.tar.bz2
>   http://kernel.org/pub/linux/kernel/v2.6/patch-2.6.24.7.bz2
>   http://rt.et.redhat.com/download/patch-2.6.24.7-rt26.bz2
> 
> 
> to build a 2.6.26.8-rt13 tree, the following patches should be applied:
> 
>   http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.26.tar.bz2
>   http://kernel.org/pub/linux/kernel/v2.6/patch-2.6.26.8.bz2
>   http://rt.et.redhat.com/download/patch-2.6.26.8-rt13.bz2
> 
> 
> And like always, my RT version of Matt Mackall's ketchup will get this
> for you nicely:
> 
>   http://people.redhat.com/srostedt/rt/tools/ketchup-0.9.8-rt3
> 
> 
> The broken out patches are also available.
> 
> The git tree can now be compiled, we are now working on getting it to
> boot ;-)  It is based off of the v2.6.28 tag.
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-
> rt.git
> 
> -- Steve
> 
> 
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-rt-
> users" in
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-------------------------------------------------------------------------------------------------------
Registergericht: Traunstein / Registry Court: HRB 275 – Sitz / Head Office: Traunreut
Aufsichtsratsvorsitzender / Chairman of Supervisory Board: Rainer Burkhard
Geschäftsführung / Management Board: Thomas Sesselmann (Vorsitzender / Chairman),
Michael Grimm, Matthias Fauser

E-Mail Haftungsausschluss / E-Mail Disclaimer: http://www.heidenhain.de/disclaimer