* Re: [patch] voluntary-preempt-2.6.9-rc3-mm2-T1
@ 2004-10-06 20:01 Mark_H_Johnson
2004-10-06 20:07 ` Ingo Molnar
0 siblings, 1 reply; 12+ messages in thread
From: Mark_H_Johnson @ 2004-10-06 20:01 UTC (permalink / raw)
To: linux-kernel; +Cc: Ingo Molnar, Rui Nuno Capela
>Meanwhile, I'm stuck with 2.6.9-rc2-mm4-S7 (SMP), but happy.
>
>Strange thing is, that on my laptop, 2.6.9-rc3-mm2-S9 (UP) is doing just
>fine. Guess that ohci_hcd now makes the difference here, against the
>former which makes uhci_hcd bad behaved atm.
I am having similar problems with -T1 and separately reported problems with
a build of rc3-mm1-S8 as well (no oops, but the USB mouse is dead).
Somewhere between those two versions (rc2-mm4-S7 and rc3-mm1-S8) is where
the problem appears to be introduced. For now I'll stay with my working -S0
kernel.
--Mark H Johnson
<mailto:Mark_H_Johnson@raytheon.com>
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc3-mm2-T1
2004-10-06 20:01 [patch] voluntary-preempt-2.6.9-rc3-mm2-T1 Mark_H_Johnson
@ 2004-10-06 20:07 ` Ingo Molnar
0 siblings, 0 replies; 12+ messages in thread
From: Ingo Molnar @ 2004-10-06 20:07 UTC (permalink / raw)
To: Mark_H_Johnson; +Cc: linux-kernel, Rui Nuno Capela
* Mark_H_Johnson@raytheon.com <Mark_H_Johnson@raytheon.com> wrote:
> >Meanwhile, I'm stuck with 2.6.9-rc2-mm4-S7 (SMP), but happy.
> >
> >Strange thing is, that on my laptop, 2.6.9-rc3-mm2-S9 (UP) is doing just
> >fine. Guess that ohci_hcd now makes the difference here, against the
> >former which makes uhci_hcd bad behaved atm.
>
> I am having similar problems with -T1 and separately reported problems
> with a build of rc3-mm1-S8 as well (no oops, but the USB mouse is
> dead). Somewhere between those two versions (rc2-mm4-S7 and
> rc3-mm1-S8) is where the problem appears to be introduced. For now
> I'll stay with my working -S0 kernel.
disable USB for now - it's broken in -mm and unrelated to -VP. There are
hopes that in -rc3-mm3 USB will work again.
Ingo
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc3-mm2-T1
@ 2004-10-06 18:57 Kari Hameenaho
0 siblings, 0 replies; 12+ messages in thread
From: Kari Hameenaho @ 2004-10-06 18:57 UTC (permalink / raw)
To: linux-kernel
Ingo Molnar wrote:
>
>* Lee Revell <rlrevell@xxxxxxxxxxx> wrote:
>
> > > i believe Andrew said that these USB problems should be fixed in
> > > the next -mm iteration.
> > >
> >
> > FWIW, this one does not work for me either, I get a USB-related Oops
> > on boot.
>
> by next -mm iteration i meant -rc3-mm3, which is not released yet.
>
> Ingo
>
The usb-hubs problem patch in LKML by Greg KH seems to fix this problem.
The thread is 2.6.9-rc3-mm1, bk-pci patch, USB hubs
---
Kari Hämeenaho
^ permalink raw reply [flat|nested] 12+ messages in thread
* BKL backtraces - was: Re: [patch] voluntary-preempt-2.6.9-rc2-mm1-S1
@ 2004-09-21 2:07 K.R. Foley
2004-09-21 7:18 ` Ingo Molnar
0 siblings, 1 reply; 12+ messages in thread
From: K.R. Foley @ 2004-09-21 2:07 UTC (permalink / raw)
To: Ingo Molnar; +Cc: linux-kernel, Lee Revell, Mark_H_Johnson
Ingo Molnar wrote:
> i've released the -S1 VP patch:
>
> http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc2-mm1-S1
>
All of these were generated while booting:
Sep 20 19:45:10 porky kernel: using smp_processor_id() in preemptible
code: modprobe/1019
Sep 20 19:45:10 porky kernel: [<c011c58e>] smp_processor_id+0x8e/0xa0
Sep 20 19:45:10 porky kernel: [<c013ace6>] module_unload_init+0x46/0x70
Sep 20 19:45:10 porky kernel: [<c013ce58>] load_module+0x598/0xb10
Sep 20 19:45:10 porky kernel: [<c013d438>] sys_init_module+0x68/0x280
Sep 20 19:45:10 porky kernel: [<c01066b9>] sysenter_past_esp+0x52/0x71
The above one of course repeats on each module load.
Sep 20 19:45:10 porky kernel: using smp_processor_id() in preemptible
code: X/1017
Sep 20 19:45:10 porky kernel: [<c011c58e>] smp_processor_id+0x8e/0xa0
Sep 20 19:45:10 porky kernel: [<c01d6c15>] add_timer_randomness+0x125/0x150
Sep 20 19:45:10 porky kernel: [<c01d6c9e>] add_mouse_randomness+0x1e/0x30
Sep 20 19:45:10 porky kernel: [<c022b835>] input_event+0x55/0x3f0
Sep 20 19:45:10 porky kernel: [<c01151e8>] mcount+0x14/0x18
Sep 20 19:45:10 porky kernel: [<c01e559e>] kbd_rate+0x5e/0xc0
Sep 20 19:45:10 porky kernel: [<c01e2196>] vt_ioctl+0xe06/0x1ad0
Sep 20 19:45:10 porky kernel: [<c014fdcf>] pte_alloc_map+0x9f/0xd0
Sep 20 19:45:10 porky kernel: [<c015214b>] handle_mm_fault+0x17b/0x1a0
Sep 20 19:45:10 porky kernel: [<c0119440>] do_page_fault+0x1e0/0x621
Sep 20 19:45:10 porky kernel: [<c0138759>] sub_preempt_count+0x69/0x80
Sep 20 19:45:10 porky kernel: [<c0138759>] sub_preempt_count+0x69/0x80
Sep 20 19:45:10 porky kernel: [<c0138512>] check_preempt_timing+0x192/0x200
Sep 20 19:45:10 porky kernel: [<c0175034>] sys_ioctl+0xe4/0x240
Sep 20 19:45:10 porky kernel: [<c01dbd1e>] tty_ioctl+0xe/0x4d0
Sep 20 19:45:10 porky kernel: [<c01151e8>] mcount+0x14/0x18
Sep 20 19:45:10 porky kernel: [<c01e1390>] vt_ioctl+0x0/0x1ad0
Sep 20 19:45:10 porky kernel: [<c01dc08b>] tty_ioctl+0x37b/0x4d0
Sep 20 19:45:10 porky kernel: [<c0175034>] sys_ioctl+0xe4/0x240
Sep 20 19:45:10 porky kernel: [<c01066b9>] sysenter_past_esp+0x52/0x71
The X one above repeats once also.
kr
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: BKL backtraces - was: Re: [patch] voluntary-preempt-2.6.9-rc2-mm1-S1
2004-09-21 2:07 BKL backtraces - was: Re: [patch] voluntary-preempt-2.6.9-rc2-mm1-S1 K.R. Foley
@ 2004-09-21 7:18 ` Ingo Molnar
2004-09-21 7:44 ` [patch] voluntary-preempt-2.6.9-rc2-mm1-S2 Ingo Molnar
0 siblings, 1 reply; 12+ messages in thread
From: Ingo Molnar @ 2004-09-21 7:18 UTC (permalink / raw)
To: K.R. Foley; +Cc: linux-kernel, Lee Revell, Mark_H_Johnson
[-- Attachment #1: Type: text/plain, Size: 1569 bytes --]
* K.R. Foley <kr@cybsft.com> wrote:
> All of these were generated while booting:
>
> Sep 20 19:45:10 porky kernel: using smp_processor_id() in preemptible
> code: modprobe/1019
> Sep 20 19:45:10 porky kernel: [<c011c58e>] smp_processor_id+0x8e/0xa0
> Sep 20 19:45:10 porky kernel: [<c013ace6>] module_unload_init+0x46/0x70
> Sep 20 19:45:10 porky kernel: [<c013ce58>] load_module+0x598/0xb10
> Sep 20 19:45:10 porky kernel: [<c013d438>] sys_init_module+0x68/0x280
> Sep 20 19:45:10 porky kernel: [<c01066b9>] sysenter_past_esp+0x52/0x71
>
> The above one of course repeats on each module load.
ok, this is a harmless false positive - the attached patch fixes it.
> Sep 20 19:45:10 porky kernel: using smp_processor_id() in preemptible
> code: X/1017
> Sep 20 19:45:10 porky kernel: [<c011c58e>] smp_processor_id+0x8e/0xa0
> Sep 20 19:45:10 porky kernel: [<c01d6c15>] add_timer_randomness+0x125/0x150
> Sep 20 19:45:10 porky kernel: [<c01d6c9e>] add_mouse_randomness+0x1e/0x30
> Sep 20 19:45:10 porky kernel: [<c022b835>] input_event+0x55/0x3f0
> Sep 20 19:45:10 porky kernel: [<c01e1390>] vt_ioctl+0x0/0x1ad0
> Sep 20 19:45:10 porky kernel: [<c01dc08b>] tty_ioctl+0x37b/0x4d0
> Sep 20 19:45:10 porky kernel: [<c0175034>] sys_ioctl+0xe4/0x240
> Sep 20 19:45:10 porky kernel: [<c01066b9>] sysenter_past_esp+0x52/0x71
>
> The X one above repeats once also.
aha! This is a real one, fixed by the second patch. This piece of code
relied on add_timer_randomness() always being called with preemption
disabled.
these fixes will show up in -S2.
Ingo
[-- Attachment #2: 1 --]
[-- Type: text/plain, Size: 441 bytes --]
--- linux/kernel/module.c.orig
+++ linux/kernel/module.c
@@ -394,7 +394,7 @@ static void module_unload_init(struct mo
for (i = 0; i < NR_CPUS; i++)
local_set(&mod->ref[i].count, 0);
/* Hold reference count during initialization. */
- local_set(&mod->ref[smp_processor_id()].count, 1);
+ local_set(&mod->ref[_smp_processor_id()].count, 1);
/* Backwards compatibility macros put refcount during init. */
mod->waiter = current;
}
[-- Attachment #3: 2 --]
[-- Type: text/plain, Size: 698 bytes --]
--- linux/drivers/char/random.c.orig
+++ linux/drivers/char/random.c
@@ -807,10 +807,11 @@ static void add_timer_randomness(struct
long delta, delta2, delta3;
int entropy = 0;
+ preempt_disable();
/* if over the trickle threshold, use only 1 in 4096 samples */
if ( random_state->entropy_count > trickle_thresh &&
(__get_cpu_var(trickle_count)++ & 0xfff))
- return;
+ goto out;
/*
* Use get_cycles() if implemented, otherwise fall back to
@@ -861,6 +862,8 @@ static void add_timer_randomness(struct
entropy = int_ln_12bits(delta);
}
batch_entropy_store(num, time, entropy);
+out:
+ preempt_enable();
}
void add_keyboard_randomness(unsigned char scancode)
^ permalink raw reply [flat|nested] 12+ messages in thread
* [patch] voluntary-preempt-2.6.9-rc2-mm1-S2
2004-09-21 7:18 ` Ingo Molnar
@ 2004-09-21 7:44 ` Ingo Molnar
2004-09-22 10:33 ` [patch] voluntary-preempt-2.6.9-rc2-mm1-S3 Ingo Molnar
0 siblings, 1 reply; 12+ messages in thread
From: Ingo Molnar @ 2004-09-21 7:44 UTC (permalink / raw)
To: K.R. Foley; +Cc: linux-kernel, Lee Revell, Mark_H_Johnson
i've released the -S2 VP patch:
http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc2-mm1-S2
Changes since -S1:
- added the swapspace-layout patch to fix the get_swap_page()
latencies. (sw-suspend wont compile but everything else should work
fine.)
- fixed the random.c BKL non-preemptability assumption
- export smp_processor_id() to fix modules
- module init smp_processor_id()-debug false positive fix
To get a 2.6.9-rc2-mm1-VP-S2 kernel, the patching order is:
http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.8.tar.bz2
+ http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.9-rc2.bz2
+ http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.9-rc2/2.6.9-rc2-mm1/2.6.9-rc2-mm1.bz2
+ http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc2-mm1-S2
Ingo
^ permalink raw reply [flat|nested] 12+ messages in thread
* [patch] voluntary-preempt-2.6.9-rc2-mm1-S3
2004-09-21 7:44 ` [patch] voluntary-preempt-2.6.9-rc2-mm1-S2 Ingo Molnar
@ 2004-09-22 10:33 ` Ingo Molnar
2004-09-23 12:28 ` [patch] voluntary-preempt-2.6.9-rc2-mm1-S4 Ingo Molnar
0 siblings, 1 reply; 12+ messages in thread
From: Ingo Molnar @ 2004-09-22 10:33 UTC (permalink / raw)
To: K.R. Foley; +Cc: linux-kernel, Lee Revell, Mark_H_Johnson
i've released the -S3 VP patch:
http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc2-mm1-S3
most importantly, -S3 fixes the SMP+PREEMPT bug reported by K.R. Foley.
It was a bug in BKL-preemption: forced preemption still caused automatic
dropping of the BKS - this is bad and broke fs/locks.c. (The race could
occur on UP+PREEMPT too but it has never been reproduced there.)
other changes since -S2:
- introduced a CONFIG_PREEMPT_BKL - just in case there are other
problems. This can be used to turn BKL preemption on/off. Can be
useful for performance tests as well.
- fixed a couple of more smp_processor_id() false positives.
- cleaned up hardirq.c some more
To get a 2.6.9-rc2-mm1-VP-S3 kernel, the patching order is:
http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.8.tar.bz2
+ http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.9-rc2.bz2
+ http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.9-rc2/2.6.9-rc2-mm1/2.6.9-rc2-mm1.bz2
+ http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc2-mm1-S3
Ingo
^ permalink raw reply [flat|nested] 12+ messages in thread
* [patch] voluntary-preempt-2.6.9-rc2-mm1-S4
2004-09-22 10:33 ` [patch] voluntary-preempt-2.6.9-rc2-mm1-S3 Ingo Molnar
@ 2004-09-23 12:28 ` Ingo Molnar
2004-09-23 21:12 ` [patch] voluntary-preempt-2.6.9-rc2-mm3-S5 Ingo Molnar
0 siblings, 1 reply; 12+ messages in thread
From: Ingo Molnar @ 2004-09-23 12:28 UTC (permalink / raw)
To: linux-kernel; +Cc: Lee Revell, Mark_H_Johnson, K.R. Foley, Rui Nuno Capela
i've released the -S4 VP patch:
http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc2-mm2-S4
-S4 fixes a softirq latency processing bug introduced in -S3. The
symptoms of this bug can be erratic mouse/keyboard behavior, higher
networking latencies, and similar things. (If CONFIG_PREEMPT is disabled
then another effect of this bug can lead to crashes.)
-S4 is also a merge to 2.6.9-rc2-mm2.
To get a 2.6.9-rc2-mm2-VP-S4 kernel, the patching order is:
http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.8.tar.bz2
+ http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.9-rc2.bz2
+ http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.9-rc2/2.6.9-rc2-mm2/2.6.9-rc2-mm2.bz2
+ http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc2-mm2-S4
Ingo
^ permalink raw reply [flat|nested] 12+ messages in thread
* [patch] voluntary-preempt-2.6.9-rc2-mm3-S5
2004-09-23 12:28 ` [patch] voluntary-preempt-2.6.9-rc2-mm1-S4 Ingo Molnar
@ 2004-09-23 21:12 ` Ingo Molnar
2004-09-24 7:44 ` [patch] voluntary-preempt-2.6.9-rc2-mm3-S6 Ingo Molnar
0 siblings, 1 reply; 12+ messages in thread
From: Ingo Molnar @ 2004-09-23 21:12 UTC (permalink / raw)
To: linux-kernel; +Cc: Lee Revell, Mark_H_Johnson, K.R. Foley, Rui Nuno Capela
i've released the -S5 VP patch:
http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc2-mm3-S5
this iteration fixes the jackd lockup reported by Rui Nuno Capela.
since Andrew has not released -mm3 yet i've uploaded his latest
intermediate tree plus two additional fixes that will likely show up in
the real -mm3, and unrolled some of the more experimental scheduler
stuff. The patching order is:
http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.8.tar.bz2
+ http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.9-rc2.bz2
+ http://redhat.com/~mingo/voluntary-preempt/2.6.9-rc2-pre-mm3-mingo.bz2
+ http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc2-mm3-S5
Ingo
^ permalink raw reply [flat|nested] 12+ messages in thread
* [patch] voluntary-preempt-2.6.9-rc2-mm3-S6
2004-09-23 21:12 ` [patch] voluntary-preempt-2.6.9-rc2-mm3-S5 Ingo Molnar
@ 2004-09-24 7:44 ` Ingo Molnar
2004-09-28 0:05 ` [patch] voluntary-preempt-2.6.9-rc2-mm4-S7 Ingo Molnar
0 siblings, 1 reply; 12+ messages in thread
From: Ingo Molnar @ 2004-09-24 7:44 UTC (permalink / raw)
To: linux-kernel; +Cc: Lee Revell, Mark_H_Johnson, K.R. Foley, Rui Nuno Capela
i've released the -S6 VP patch:
http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc2-mm3-S6
this iteration fixes the 'dropped tcp connections' problem reported and
fixed by K.R. Foley.
The patching order is:
http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.8.tar.bz2
+ http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.9-rc2.bz2
+ http://redhat.com/~mingo/voluntary-preempt/2.6.9-rc2-pre-mm3-mingo.bz2
+ http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc2-mm3-S6
Ingo
^ permalink raw reply [flat|nested] 12+ messages in thread
* [patch] voluntary-preempt-2.6.9-rc2-mm4-S7
2004-09-24 7:44 ` [patch] voluntary-preempt-2.6.9-rc2-mm3-S6 Ingo Molnar
@ 2004-09-28 0:05 ` Ingo Molnar
2004-10-03 21:09 ` [patch] voluntary-preempt-2.6.9-rc3-mm1-S8 Ingo Molnar
0 siblings, 1 reply; 12+ messages in thread
From: Ingo Molnar @ 2004-09-28 0:05 UTC (permalink / raw)
To: linux-kernel; +Cc: Lee Revell, K.R. Foley, Rui Nuno Capela
i've released the -S7 VP patch:
http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc2-mm4-S7
this iteration is mainly a merge to -mm4. (-mm4 includes PREEMPT_BKL so
the -VP patch got smaller again - at least until -mm carries it.) The
patch undoes some more experimental scheduler patches that -mm includes.
The patching order is:
http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.8.tar.bz2
+ http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.9-rc2.bz2
+ http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.9-rc2/2.6.9-rc2-mm4/2.6.9-rc2-mm4.bz2
+ http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc2-mm4-S7
Ingo
^ permalink raw reply [flat|nested] 12+ messages in thread
* [patch] voluntary-preempt-2.6.9-rc3-mm1-S8
2004-09-28 0:05 ` [patch] voluntary-preempt-2.6.9-rc2-mm4-S7 Ingo Molnar
@ 2004-10-03 21:09 ` Ingo Molnar
2004-10-04 21:53 ` [patch] voluntary-preempt-2.6.9-rc3-mm1-S9 Ingo Molnar
0 siblings, 1 reply; 12+ messages in thread
From: Ingo Molnar @ 2004-10-03 21:09 UTC (permalink / raw)
To: linux-kernel; +Cc: Lee Revell, K.R. Foley, Rui Nuno Capela
i've released the -S8 VP patch:
http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc3-mm1-S8
this iteration is mainly a merge to -rc3-mm1. The -rc3-mm1 tree now
includes the generic-irq-subsystem patch which is a prerequisite of the
threaded-irqs feature in the -VP patch. As a result of this the -VP
patch got significantly smaller, down from 224K to 89K.
also part of the patch are further refinements of the preempt-bkl
feature and a couple of bugfixes, reported for the -mm tree but not
included in -rc3-mm1 yet. (All of these were sent to Andrew too so they
should show up in -mm2.)
to build an -S8 tree from scratch the patching order is:
http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.8.tar.bz2
+ http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.9-rc3.bz2
+ http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.9-rc3/2.6.9-rc3-mm1/2.6.9-rc3-mm1.bz2
+ http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc3-mm1-S8
Ingo
^ permalink raw reply [flat|nested] 12+ messages in thread
* [patch] voluntary-preempt-2.6.9-rc3-mm1-S9
2004-10-03 21:09 ` [patch] voluntary-preempt-2.6.9-rc3-mm1-S8 Ingo Molnar
@ 2004-10-04 21:53 ` Ingo Molnar
2004-10-05 13:47 ` [patch] voluntary-preempt-2.6.9-rc3-mm2-T1 Ingo Molnar
0 siblings, 1 reply; 12+ messages in thread
From: Ingo Molnar @ 2004-10-04 21:53 UTC (permalink / raw)
To: linux-kernel
Cc: Lee Revell, K.R. Foley, Rui Nuno Capela, thewade, Florian Schmidt
i've released the -S9 VP patch:
http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc3-mm2-S9
Changes since -S8:
- merge to -mm2. mm2 includes another latency breaker: Hugh Dickins'
vmtruncate rework that should fix the bash-shared-mapping latency.
- fix the x64 compilation bug reported by thewade
- fix the menuconfig duplicate entry bug noticed by Florian Schmidt
- (fix two preempt bugs in -mm2 - will be in -mm3)
to build an -S9 tree from scratch the patching order is:
http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.8.tar.bz2
+ http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.9-rc3.bz2
+ http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.9-rc3/2.6.9-rc3-mm2/2.6.9-rc3-mm2.bz2
+ http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc3-mm2-S9
Ingo
^ permalink raw reply [flat|nested] 12+ messages in thread
* [patch] voluntary-preempt-2.6.9-rc3-mm2-T1
2004-10-04 21:53 ` [patch] voluntary-preempt-2.6.9-rc3-mm1-S9 Ingo Molnar
@ 2004-10-05 13:47 ` Ingo Molnar
2004-10-05 16:37 ` Rui Nuno Capela
2004-10-08 11:16 ` William Lee Irwin III
0 siblings, 2 replies; 12+ messages in thread
From: Ingo Molnar @ 2004-10-05 13:47 UTC (permalink / raw)
To: linux-kernel; +Cc: Lee Revell, K.R. Foley, Rui Nuno Capela, Florian Schmidt
i've released the -T1 VP patch:
http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc3-mm2-T1
Changes since -T0:
- added the read-lock fix from Hugh that affects SMP systems. This
could fix Rui's problem - i've checked -T1 on a P4/HT box and saw no
problems, BYMMV.
- compilation fixes (for those who downloaded T0 early)
- small tracer improvement
to build a -T1 tree from scratch the patching order is:
http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.8.tar.bz2
+ http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.9-rc3.bz2
+ http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.9-rc3/2.6.9-rc3-mm2/2.6.9-rc3-mm2.bz2
+ http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc3-mm2-T1
Ingo
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc3-mm2-T1
2004-10-05 13:47 ` [patch] voluntary-preempt-2.6.9-rc3-mm2-T1 Ingo Molnar
@ 2004-10-05 16:37 ` Rui Nuno Capela
2004-10-05 18:42 ` Ingo Molnar
2004-10-08 11:16 ` William Lee Irwin III
1 sibling, 1 reply; 12+ messages in thread
From: Rui Nuno Capela @ 2004-10-05 16:37 UTC (permalink / raw)
To: Ingo Molnar; +Cc: linux-kernel, Lee Revell, K.R. Foley, Florian Schmidt
[-- Attachment #1: Type: text/plain, Size: 745 bytes --]
Ingo Molnar wrote:
>
> i've released the -T1 VP patch:
>
http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc3-mm2-T1
>
> Changes since -T0:
>
> - added the read-lock fix from Hugh that affects SMP systems. This
> could fix Rui's problem - i've checked -T1 on a P4/HT box and saw
> no problems, BYMMV.
>
No go here. My milleage certainly varies :)
Still the same ugliness here with T1. As before, there goes some info
attached, which I could collect while barely up and running.
I don't wanna be a PITA, but changes are hardly noticed since T0.
Next I'll try building with CONFIG_SCHED_SMT off, and later with
CONFIG_SMP off too, to just try to make some point here.
CU
--
rncbc aka Rui Nuno Capela
rncbc@rncbc.org
[-- Attachment #2: dump-2.6.9-rc3-mm2-T1.0smp.tar.gz --]
[-- Type: application/x-tgz, Size: 16691 bytes --]
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc3-mm2-T1
2004-10-05 16:37 ` Rui Nuno Capela
@ 2004-10-05 18:42 ` Ingo Molnar
2004-10-05 19:38 ` Rui Nuno Capela
0 siblings, 1 reply; 12+ messages in thread
From: Ingo Molnar @ 2004-10-05 18:42 UTC (permalink / raw)
To: Rui Nuno Capela; +Cc: linux-kernel, Lee Revell, K.R. Foley, Florian Schmidt
* Rui Nuno Capela <rncbc@rncbc.org> wrote:
> Still the same ugliness here with T1. As before, there goes some info
> attached, which I could collect while barely up and running.
the dmesg info shows you had a crash early on, in khubd:
Badness in remove_proc_entry at fs/proc/generic.c:688
[<c018c8e8>] remove_proc_entry+0x152/0x15a
[<f8b8e116>] uhci_hcd_init+0x116/0x133 [uhci_hcd]
[<c0135f0e>] sys_init_module+0x1df/0x2da
[<c01044ed>] sysenter_past_esp+0x52/0x71
usb 3-1: new low speed USB device using address 2
Unable to handle kernel paging request at virtual address a49c0e0c
i believe this is a crash present in -mm too. In theory such a crash
could mess up the kernel so best would be if you could try a kernel with
USB disabled? Hopefully none of your critical devices is on USB ...
Ingo
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc3-mm2-T1
2004-10-05 18:42 ` Ingo Molnar
@ 2004-10-05 19:38 ` Rui Nuno Capela
2004-10-05 19:44 ` Ingo Molnar
0 siblings, 1 reply; 12+ messages in thread
From: Rui Nuno Capela @ 2004-10-05 19:38 UTC (permalink / raw)
To: Ingo Molnar; +Cc: linux-kernel, Lee Revell, K.R. Foley, Florian Schmidt
Ingo Molnar wrote:
>
> * Rui Nuno Capela wrote:
>
>> Still the same ugliness here with T1. As before, there goes some info
>> attached, which I could collect while barely up and running.
>
> the dmesg info shows you had a crash early on, in khubd:
>
> Badness in remove_proc_entry at fs/proc/generic.c:688
> [<c018c8e8>] remove_proc_entry+0x152/0x15a
> [<f8b8e116>] uhci_hcd_init+0x116/0x133 [uhci_hcd]
> [<c0135f0e>] sys_init_module+0x1df/0x2da
> [<c01044ed>] sysenter_past_esp+0x52/0x71
> usb 3-1: new low speed USB device using address 2
> Unable to handle kernel paging request at virtual address a49c0e0c
>
> i believe this is a crash present in -mm too. In theory such a crash
> could mess up the kernel so best would be if you could try a kernel with
> USB disabled? Hopefully none of your critical devices is on USB ...
>
Yeah, I've found it the hard way :) One of my trials discovered just that,
by booting without any USB devices plugged in. It booted apparently fine.
Then, exacltly when I plug in my USB mouse (Wacom Graphire2 tablet), I
immediately get the following kernel oops (on dmesg):
IRQ#23 thread started up.
IRQ#19 thread started up.
usb 2-1: new low speed USB device using address 2
Unable to handle kernel paging request at virtual address aaf7ee8f
printing eip:
c014284b
*pde = 00000000
Oops: 0000 [#1]
PREEMPT SMP
Modules linked in: mga ohci1394 ieee1394 ehci_hcd uhci_hcd intel_mch_agp
agpgart snd_usb_usx2y snd_usb_lib snd_rawmidi snd_seq_device snd_hwdep
snd_intel8x0 snd_ac97_codec snd_pcm snd_timer snd soundcore snd_page_alloc
evdev sk98lin realtime commoncap w83781d i2c_sensor i2c_isa i2c_i801
i2c_core wacom usbcore subfs dm_mod
CPU: 1
EIP: 0060:[<c014284b>] Not tainted VLI
EFLAGS: 00010093 (2.6.9-rc3-mm2-T1.0smp)
EIP is at check_poison_obj+0x98/0x1d0
eax: 0000006b ebx: f6e8a780 ecx: f6d254b8 edx: ffffffa5
esi: 00000000 edi: aaf7ee8f ebp: f74d3d10 esp: f74d3ce8
ds: 007b es: 007b ss: 0068 preempt: 00000002
Process khubd (pid: 1306, threadinfo=f74d3000 task=f7df2a40)
Stack: f6e8a780 f74d3cfc c0130ce3 0000002b c0144658 00000000 0000002c
f6e8a780
aaf7ee8b f6e8a780 f74d3d34 c01442f5 f6e8a780 aaf7ee8b f6d254b8
f6d254b8
f6e8a780 00000046 00000020 f74d3d58 c0144658 f6e8a780 00000020
aaf7ee8b
Call Trace:
[<c0130ce3>] __mcount+0x1d/0x1f
[<c0144658>] kmem_cache_alloc+0x6b/0xa5
[<c01442f5>] cache_alloc_debugcheck_after+0x129/0x162
[<c0144658>] kmem_cache_alloc+0x6b/0xa5
[<f8c35ff9>] uhci_alloc_urb_priv+0x26/0x81 [uhci_hcd]
[<f8c35ff9>] uhci_alloc_urb_priv+0x26/0x81 [uhci_hcd]
[<f8c36fbb>] uhci_urb_enqueue+0x5d/0x2bc [uhci_hcd]
[<c0110350>] mcount+0x14/0x18
[<f8b424f4>] hcd_submit_urb+0x127/0x194 [usbcore]
[<f8b42e38>] usb_submit_urb+0x1e2/0x244 [usbcore]
[<f8b430c7>] usb_start_wait_urb+0xe/0xe2 [usbcore]
[<f8b4310c>] usb_start_wait_urb+0x53/0xe2 [usbcore]
[<c0130ce3>] __mcount+0x1d/0x1f
[<c01ea660>] kref_init+0x8/0x13
[<f8b42ba8>] usb_init_urb+0x27/0x3c [usbcore]
[<c0110350>] mcount+0x14/0x18
[<f8b42bef>] usb_alloc_urb+0x32/0x52 [usbcore]
[<f8b43215>] usb_internal_control_msg+0x7a/0x83 [usbcore]
[<f8b432aa>] usb_control_msg+0x8c/0xa0 [usbcore]
[<f8b3fe23>] hub_set_address+0x6d/0x90 [usbcore]
[<f8b3fff7>] hub_port_init+0x1b1/0x39a [usbcore]
[<f8b404d9>] hub_port_connect_change+0xfe/0x43a [usbcore]
[<f8b409d3>] hub_events+0x1be/0x395 [usbcore]
[<f8b40be1>] hub_thread+0x37/0x109 [usbcore]
[<c0130845>] autoremove_wake_function+0x0/0x50
[<c0104416>] ret_from_fork+0x6/0x14
[<c0130845>] autoremove_wake_function+0x0/0x50
[<f8b40baa>] hub_thread+0x0/0x109 [usbcore]
[<c0102601>] kernel_thread_helper+0x5/0xb
Code: 89 44 24 08 e8 09 fe ff ff 83 45 ec 01 83 7d ec 05 7f 5b 83 c6 01 3b
75 f0 7d 53 3b 75 e4 b8 6b 00 00 00 ba a5 ff ff ff 0f 44 c2 <38> 04 3e 2e
74 e2 8b 45 ec 85 c0 75 a0 8b 55 f0 89 7c 24 04 c7
<6>note: khubd[1306] exited with preempt_count 1
Guess what? It's right after this crash that ksoftirqd/1 pulls up to
99.99%CPU#1 and stays still on that figure, forever. Of course, as Ingo
noted, this was happening behind the scenes every time I was boot/initing.
OTOH, I've tested T1 with CONFIG_SCHED_SMT and/or CONFIG_SMP not set, and
got similar crashes too. So this seems to be some nasty bug introduced by
-mm{1,2}, not by VP on SMP/SMT.
Yes, I do have some critical USB devices around here. One is that wacom
tablet (mouse) and the other is a tascam us-224 audio/midi control surface
that a love very much :)
Don't know if this makes me feeling better, doh.
Cheers.
--
rncbc aka Rui Nuno Capela
rncbc@rncbc.org
^ permalink raw reply [flat|nested] 12+ messages in thread* Re: [patch] voluntary-preempt-2.6.9-rc3-mm2-T1
2004-10-05 19:38 ` Rui Nuno Capela
@ 2004-10-05 19:44 ` Ingo Molnar
2004-10-05 20:01 ` Rui Nuno Capela
2004-10-06 0:12 ` Lee Revell
0 siblings, 2 replies; 12+ messages in thread
From: Ingo Molnar @ 2004-10-05 19:44 UTC (permalink / raw)
To: Rui Nuno Capela; +Cc: linux-kernel, Lee Revell, K.R. Foley, Florian Schmidt
* Rui Nuno Capela <rncbc@rncbc.org> wrote:
> OTOH, I've tested T1 with CONFIG_SCHED_SMT and/or CONFIG_SMP not set,
> and got similar crashes too. So this seems to be some nasty bug
> introduced by -mm{1,2}, not by VP on SMP/SMT.
>
> Yes, I do have some critical USB devices around here. One is that
> wacom tablet (mouse) and the other is a tascam us-224 audio/midi
> control surface that a love very much :)
>
> Don't know if this makes me feeling better, doh.
i believe Andrew said that these USB problems should be fixed in the
next -mm iteration.
Ingo
^ permalink raw reply [flat|nested] 12+ messages in thread* Re: [patch] voluntary-preempt-2.6.9-rc3-mm2-T1
2004-10-05 19:44 ` Ingo Molnar
@ 2004-10-05 20:01 ` Rui Nuno Capela
2004-10-06 0:12 ` Lee Revell
1 sibling, 0 replies; 12+ messages in thread
From: Rui Nuno Capela @ 2004-10-05 20:01 UTC (permalink / raw)
To: Ingo Molnar; +Cc: linux-kernel, Lee Revell, K.R. Foley, Florian Schmidt
Ingo Molnar wrote:
>
> * Rui Nuno Capela wrote:
>
>> OTOH, I've tested T1 with CONFIG_SCHED_SMT and/or CONFIG_SMP not set,
>> and got similar crashes too. So this seems to be some nasty bug
>> introduced by -mm{1,2}, not by VP on SMP/SMT.
>>
>> Yes, I do have some critical USB devices around here. One is that
>> wacom tablet (mouse) and the other is a tascam us-224 audio/midi
>> control surface that a love very much :)
>>
>> Don't know if this makes me feeling better, doh.
>
> i believe Andrew said that these USB problems should be fixed in the
> next -mm iteration.
>
Oh yes, I really do hope so :)
Meanwhile, I'm stuck with 2.6.9-rc2-mm4-S7 (SMP), but happy.
Strange thing is, that on my laptop, 2.6.9-rc3-mm2-S9 (UP) is doing just
fine. Guess that ohci_hcd now makes the difference here, against the
former which makes uhci_hcd bad behaved atm.
Thanks Ingo.
--
rncbc aka Rui Nuno Capela
rncbc@rncbc.org
^ permalink raw reply [flat|nested] 12+ messages in thread* Re: [patch] voluntary-preempt-2.6.9-rc3-mm2-T1
2004-10-05 19:44 ` Ingo Molnar
2004-10-05 20:01 ` Rui Nuno Capela
@ 2004-10-06 0:12 ` Lee Revell
2004-10-06 7:51 ` Ingo Molnar
1 sibling, 1 reply; 12+ messages in thread
From: Lee Revell @ 2004-10-06 0:12 UTC (permalink / raw)
To: Ingo Molnar; +Cc: Rui Nuno Capela, linux-kernel, K.R. Foley, Florian Schmidt
On Tue, 2004-10-05 at 15:44, Ingo Molnar wrote:
> * Rui Nuno Capela <rncbc@rncbc.org> wrote:
>
> > OTOH, I've tested T1 with CONFIG_SCHED_SMT and/or CONFIG_SMP not set,
> > and got similar crashes too. So this seems to be some nasty bug
> > introduced by -mm{1,2}, not by VP on SMP/SMT.
> >
> > Yes, I do have some critical USB devices around here. One is that
> > wacom tablet (mouse) and the other is a tascam us-224 audio/midi
> > control surface that a love very much :)
> >
> > Don't know if this makes me feeling better, doh.
>
> i believe Andrew said that these USB problems should be fixed in the
> next -mm iteration.
>
FWIW, this one does not work for me either, I get a USB-related Oops on
boot.
Lee
^ permalink raw reply [flat|nested] 12+ messages in thread* Re: [patch] voluntary-preempt-2.6.9-rc3-mm2-T1
2004-10-06 0:12 ` Lee Revell
@ 2004-10-06 7:51 ` Ingo Molnar
0 siblings, 0 replies; 12+ messages in thread
From: Ingo Molnar @ 2004-10-06 7:51 UTC (permalink / raw)
To: Lee Revell; +Cc: Rui Nuno Capela, linux-kernel, K.R. Foley, Florian Schmidt
* Lee Revell <rlrevell@joe-job.com> wrote:
> > i believe Andrew said that these USB problems should be fixed in the
> > next -mm iteration.
> >
>
> FWIW, this one does not work for me either, I get a USB-related Oops
> on boot.
by next -mm iteration i meant -rc3-mm3, which is not released yet.
Ingo
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [patch] voluntary-preempt-2.6.9-rc3-mm2-T1
2004-10-05 13:47 ` [patch] voluntary-preempt-2.6.9-rc3-mm2-T1 Ingo Molnar
2004-10-05 16:37 ` Rui Nuno Capela
@ 2004-10-08 11:16 ` William Lee Irwin III
1 sibling, 0 replies; 12+ messages in thread
From: William Lee Irwin III @ 2004-10-08 11:16 UTC (permalink / raw)
To: Ingo Molnar
Cc: linux-kernel, Lee Revell, K.R. Foley, Rui Nuno Capela, Florian Schmidt
On Tue, Oct 05, 2004 at 03:47:07PM +0200, Ingo Molnar wrote:
> i've released the -T1 VP patch:
> http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc3-mm2-T1
> Changes since -T0:
> - added the read-lock fix from Hugh that affects SMP systems. This
> could fix Rui's problem - i've checked -T1 on a P4/HT box and saw no
> problems, BYMMV.
> - compilation fixes (for those who downloaded T0 early)
> - small tracer improvement
> to build a -T1 tree from scratch the patching order is:
> http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.8.tar.bz2
> + http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.9-rc3.bz2
> + http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.9-rc3/2.6.9-rc3-mm2/2.6.9-rc3-mm2.bz2
> + http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc3-mm2-T1
The version numbers are up to Chebyshev polynomials. Now I have to try it.
-- wli
^ permalink raw reply [flat|nested] 12+ messages in thread
end of thread, other threads:[~2004-10-08 11:20 UTC | newest]
Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2004-10-06 20:01 [patch] voluntary-preempt-2.6.9-rc3-mm2-T1 Mark_H_Johnson
2004-10-06 20:07 ` Ingo Molnar
-- strict thread matches above, loose matches on Subject: below --
2004-10-06 18:57 Kari Hameenaho
2004-09-21 2:07 BKL backtraces - was: Re: [patch] voluntary-preempt-2.6.9-rc2-mm1-S1 K.R. Foley
2004-09-21 7:18 ` Ingo Molnar
2004-09-21 7:44 ` [patch] voluntary-preempt-2.6.9-rc2-mm1-S2 Ingo Molnar
2004-09-22 10:33 ` [patch] voluntary-preempt-2.6.9-rc2-mm1-S3 Ingo Molnar
2004-09-23 12:28 ` [patch] voluntary-preempt-2.6.9-rc2-mm1-S4 Ingo Molnar
2004-09-23 21:12 ` [patch] voluntary-preempt-2.6.9-rc2-mm3-S5 Ingo Molnar
2004-09-24 7:44 ` [patch] voluntary-preempt-2.6.9-rc2-mm3-S6 Ingo Molnar
2004-09-28 0:05 ` [patch] voluntary-preempt-2.6.9-rc2-mm4-S7 Ingo Molnar
2004-10-03 21:09 ` [patch] voluntary-preempt-2.6.9-rc3-mm1-S8 Ingo Molnar
2004-10-04 21:53 ` [patch] voluntary-preempt-2.6.9-rc3-mm1-S9 Ingo Molnar
2004-10-05 13:47 ` [patch] voluntary-preempt-2.6.9-rc3-mm2-T1 Ingo Molnar
2004-10-05 16:37 ` Rui Nuno Capela
2004-10-05 18:42 ` Ingo Molnar
2004-10-05 19:38 ` Rui Nuno Capela
2004-10-05 19:44 ` Ingo Molnar
2004-10-05 20:01 ` Rui Nuno Capela
2004-10-06 0:12 ` Lee Revell
2004-10-06 7:51 ` Ingo Molnar
2004-10-08 11:16 ` William Lee Irwin III
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