Re: [PATCH RT] kstopmachine has legit preempt_enable_no_resched (was: 2.6.15-rt12 bugs)

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On Tue, 2006-01-24 at 14:33 +0100, Michal Piotrowski wrote:

> Great thanks!
> 
> Now 2.6.15-rt14 works fine (after disabling CONFIG_DEBUG_STACKOVERFLOW).
> 
> I have noticed only one warning
> WARNING: softirq-tasklet/8 changed soft IRQ-flags.
>  [<c0103b1b>] dump_stack+0x1b/0x1f (20)
>  [<c0135218>] illegal_API_call+0x41/0x46 (20)
>  [<c0135267>] local_irq_disable+0x1d/0x1f (8)
>   [<f886dbd5>] skge_extirq+0x117/0x138 [skge] (32)
>  [<c01202d5>] tasklet_action+0x8a/0xf1 (24)
>   [<c01205c1>] ksoftirqd+0x10f/0x19e (32)
>   [<c012d7ca>] kthread+0x7b/0xa9 (36)
>  [<c01010c5>] kernel_thread_helper+0x5/0xb (1047875612)
> ---------------------------
> | preempt count: 00000000 ]
> | 0-level deep critical section nesting:
> ----------------------------------------
> 
> ------------------------------
> | showing all locks held by: |  (softirq-tasklet/8 [c18a97d0,  98]):
> ------------------------------

Yeah, I've seen this too. Since it's just a warning, it's been push to
the back of the TODO list.

> 
> And problems while loading ipv6 module
> Running ntpdate to synchronize clockCould not allocate 4 bytes percpu data
> modprobe: FATAL: Error inserting ipv6
> (/lib/modules/2.6.15-rt14/kernel/net/ipv6/ipv6.ko): Cannot allocate
> memory
> 
> Could not allocate 4 bytes percpu data
> modprobe: FATAL: Error inserting ipv6
> (/lib/modules/2.6.15-rt14/kernel/net/ipv6/ipv6.ko): Cannot allocate
> memory

Is this new with the -rt14? or has this happened before. If it has
happened before, then could you tell us when it started.

Thanks,

-- Steve


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