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Date: Tue, 12 Oct 2004 01:11:01 +0100 (WEST)
Subject: Re: [patch] VP-2.6.9-rc4-mm1-T5
From: "Rui Nuno Capela" <rncbc@rncbc.org>
To: "Ingo Molnar" <mingo@elte.hu>
Cc: mark_h_johnson@raytheon.com, "Andrew Morton" <akpm@osdl.org>,
       "Daniel Walker" <dwalker@mvista.com>, "K.R. Foley" <kr@cybsft.com>,
       linux-kernel@vger.kernel.org, "Florian Schmidt" <mista.tapas@gmx.net>,
       "Fernando Pablo Lopez-Lezcano" <nando@ccrma.stanford.edu>,
       "Lee Revell" <rlrevell@joe-job.com>
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Ingo Molnar wrote:
>
> i've uploaded -T5 which should fix most of the build issues:
>  http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc4-mm1-T5
>

Sharp roughness is the name of the game ;)

Built fine here, for P4 SMP/HT, and CONFIG_PREEMPT_REALTIME=y.

But, not surprisingly, booting/initing gives me lots of fireworks. This is
just some (tiny) sample taken from syslog:

Oct 12 00:15:26 gamma-suse1 kernel: Debug: sleeping function called from
invalid context pdflush(120) at kernel/mutex.c:23
Oct 12 00:15:26 gamma-suse1 kernel: in_atomic():1 [00000001],
irqs_disabled():1
Oct 12 00:15:26 gamma-suse1 kernel:  [__might_sleep+193/212]
__might_sleep+0xc1/0xd4
Oct 12 00:15:26 gamma-suse1 kernel:  [<c0118fca>] __might_sleep+0xc1/0xd4
Oct 12 00:15:26 gamma-suse1 kernel:  [_mutex_lock+39/96]
_mutex_lock+0x27/0x60
Oct 12 00:15:26 gamma-suse1 kernel:  [<c0130d0c>] _mutex_lock+0x27/0x60
Oct 12 00:15:26 gamma-suse1 kernel:  [_mutex_lock_irqsave+22/26]
_mutex_lock_irqsave+0x16/0x1a
Oct 12 00:15:26 gamma-suse1 kernel:  [<c0130d7d>]
_mutex_lock_irqsave+0x16/0x1a
Oct 12 00:15:26 gamma-suse1 kernel:  [page_address+78/158]
page_address+0x4e/0x9e
Oct 12 00:15:26 gamma-suse1 kernel:  [<c0149c97>] page_address+0x4e/0x9e
Oct 12 00:15:26 gamma-suse1 kernel:  [bio_hw_segments+12/48]
bio_hw_segments+0xc/0x30
Oct 12 00:15:26 gamma-suse1 kernel:  [<c01617ca>] bio_hw_segments+0xc/0x30
Oct 12 00:15:26 gamma-suse1 kernel:  [__make_request+1010/1251]
__make_request+0x3f2/0x4e3
Oct 12 00:15:26 gamma-suse1 kernel:  [<c023db69>] __make_request+0x3f2/0x4e3
Oct 12 00:15:26 gamma-suse1 kernel:  [generic_make_request+298/662]
generic_make_request+0x12a/0x296
Oct 12 00:15:26 gamma-suse1 kernel:  [<c023dee4>]
generic_make_request+0x12a/0x296
...

Oct 12 00:15:26 gamma-suse1 kernel: Debug: sleeping function called from
invalid context modprobe(1666) at kernel/mutex.c:23
Oct 12 00:15:26 gamma-suse1 kernel: in_atomic():1 [00000001],
irqs_disabled():1
Oct 12 00:15:26 gamma-suse1 kernel:  [__might_sleep+193/212]
__might_sleep+0xc1/0xd4
Oct 12 00:15:26 gamma-suse1 kernel:  [<c0118fca>] __might_sleep+0xc1/0xd4
Oct 12 00:15:26 gamma-suse1 kernel:  [_mutex_lock+39/96]
_mutex_lock+0x27/0x60
Oct 12 00:15:26 gamma-suse1 kernel:  [<c0130d0c>] _mutex_lock+0x27/0x60
Oct 12 00:15:26 gamma-suse1 kernel:  [_mutex_lock_irqsave+22/26]
_mutex_lock_irqsave+0x16/0x1a
Oct 12 00:15:26 gamma-suse1 kernel:  [<c0130d7d>]
_mutex_lock_irqsave+0x16/0x1a
Oct 12 00:15:26 gamma-suse1 kernel:  [page_address+78/158]
page_address+0x4e/0x9e
Oct 12 00:15:26 gamma-suse1 kernel:  [<c0149c97>] page_address+0x4e/0x9e
Oct 12 00:15:26 gamma-suse1 kernel:  [bio_hw_segments+12/48]
bio_hw_segments+0xc/0x30
Oct 12 00:15:26 gamma-suse1 kernel:  [<c01617ca>] bio_hw_segments+0xc/0x30
Oct 12 00:15:26 gamma-suse1 kernel:  [__make_request+1010/1251]
__make_request+0x3f2/0x4e3
Oct 12 00:15:26 gamma-suse1 kernel:  [<c023db69>] __make_request+0x3f2/0x4e3
Oct 12 00:15:26 gamma-suse1 kernel:  [generic_make_request+298/662]
generic_make_request+0x12a/0x296
Oct 12 00:15:26 gamma-suse1 kernel:  [<c023dee4>]
generic_make_request+0x12a/0x296
...

Oct 12 00:15:26 gamma-suse1 kernel: Debug: sleeping function called from
invalid context blogd(1851) at kernel/mutex.c:23
Oct 12 00:15:26 gamma-suse1 kernel: in_atomic():1 [00000001],
irqs_disabled():1
Oct 12 00:15:26 gamma-suse1 kernel:  [__might_sleep+193/212]
__might_sleep+0xc1/0xd4
Oct 12 00:15:26 gamma-suse1 kernel:  [<c0118fca>] __might_sleep+0xc1/0xd4
Oct 12 00:15:26 gamma-suse1 kernel:  [_mutex_lock+39/96]
_mutex_lock+0x27/0x60
Oct 12 00:15:26 gamma-suse1 kernel:  [<c0130d0c>] _mutex_lock+0x27/0x60
Oct 12 00:15:26 gamma-suse1 kernel:  [_mutex_lock_irqsave+22/26]
_mutex_lock_irqsave+0x16/0x1a
Oct 12 00:15:26 gamma-suse1 kernel:  [<c0130d7d>]
_mutex_lock_irqsave+0x16/0x1a
Oct 12 00:15:26 gamma-suse1 kernel:  [page_address+78/158]
page_address+0x4e/0x9e
Oct 12 00:15:26 gamma-suse1 kernel:  [<c0149c97>] page_address+0x4e/0x9e
Oct 12 00:15:26 gamma-suse1 kernel:  [bio_hw_segments+12/48]
bio_hw_segments+0xc/0x30
Oct 12 00:15:26 gamma-suse1 kernel:  [<c01617ca>] bio_hw_segments+0xc/0x30
Oct 12 00:15:26 gamma-suse1 kernel:  [__make_request+1010/1251]
__make_request+0x3f2/0x4e3
Oct 12 00:15:26 gamma-suse1 kernel:  [<c023db69>] __make_request+0x3f2/0x4e3
Oct 12 00:15:26 gamma-suse1 kernel:  [generic_make_request+298/662]
generic_make_request+0x12a/0x296
Oct 12 00:15:26 gamma-suse1 kernel:  [<c023dee4>]
generic_make_request+0x12a/0x296
...

An so on, and so on...
-- 
rncbc aka Rui Nuno Capela
rncbc@rncbc.org

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