Re: [PATCH] CPEI gets warning at kernel/irq/migration.c:27/move_masked_irq()

Arjan van de Ven wrote:
>> It'd be nice if we could just teach the userspace balancer to not try to
>> move perpcu IRQs?
>>
>> otoh, the patch is super-cheap.   Arjan?
> 
> I can fix irqbalance no problem, however I like the kernel approach as
> well, since it's not just irqbalance that moves irqs, sysadmins tend to
> do it as well....  so how about both?

Thanks for positive comments.

> One thing we probably should do, and that would help irqbalance
> immensely, is to export a bitmask for which cpus an interrupt CAN go to,
> next to where the current binding interface is. I'll check into that
> 
> Hidetoshi: would it be possible to send me a /proc/interrupts file of
> that machine?

Here you are.
This machine is not special. I guess all ia64 machine will show
few or more but almost same lines. CPEI is #30.

$ cat /proc/interrupts
           CPU0       CPU1
 28:          0          0          LSAPIC  cpe_poll
 29:          0          0          LSAPIC  cmc_poll
 30:          0          0  IO-SAPIC-level  cpe_hndlr
 31:          0          0          LSAPIC  cmc_hndlr
 34:       4643    1881067   IO-SAPIC-edge  ide0
 39:          0          0  IO-SAPIC-level  acpi
 45:        148        560   IO-SAPIC-edge  serial
 48:          0          0  IO-SAPIC-level  uhci_hcd
 49:          0          0  IO-SAPIC-level  uhci_hcd
 50:          0          0  IO-SAPIC-level  ehci_hcd
 51:      21131    1257790  IO-SAPIC-level  eth0
 53:      21778     458314  IO-SAPIC-level  ioc0
 54:          0         44  IO-SAPIC-level  ioc1
232:          0          0          LSAPIC  mca_rdzv
238:          0          0          LSAPIC  perfmon
239:  214832233  214832003          LSAPIC  timer
240:          0          0          LSAPIC  mca_wkup
254:     209193        611          LSAPIC  IPI
ERR:          0

Thanks,
H.Seto

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• References:
  • [PATCH] CPEI gets warning at kernel/irq/migration.c:27/move_masked_irq()
    • From: Hidetoshi Seto <[email protected]>
  • Re: [PATCH] CPEI gets warning at kernel/irq/migration.c:27/move_masked_irq()
    • From: Andrew Morton <[email protected]>
  • Re: [PATCH] CPEI gets warning at kernel/irq/migration.c:27/move_masked_irq()
    • From: Arjan van de Ven <[email protected]>

• Prev by Date: Re: 2.6.19-rt3: compilation failure
• Next by Date: Re: [PATCH] mm: D-cache aliasing issue in cow_user_page
• Previous by thread: Re: [PATCH] CPEI gets warning at kernel/irq/migration.c:27/move_masked_irq()
• Next by thread: Re: [PATCH] mm: D-cache aliasing issue in cow_user_page
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]