[PATCH 0/3] sparc32: SMP IPI patches

[PATCH 0/3] sparc32: SMP IPI patches

[Daniel Hellstrom]

Hello Dave,

I have made a new set of IPI patches, this time it includes a patch for 
SUN4M but still missing SUN4D however.

I have tried to use BTFIXUPs and extract some code from the LEON to the 
common smp_32.c as you suggested. I have left the non-spinlock LEON code 
around per-cpu work data as we discussed, I think the same argumentation 
works for sun4m to avoid races when clearing the pending register in the 
interrupt trap handler.

This time I added some IPI IRQ statistics to the genirq 
arch_show_interrupts(),
so the patches must be applied to sparc-next containing genirq patches.

Daniel

 arch/sparc/Kconfig                  |    3 +-
 arch/sparc/include/asm/cpudata_32.h |    5 ++
 arch/sparc/include/asm/leon.h       |    4 +-
 arch/sparc/include/asm/smp_32.h     |   22 +++----
 arch/sparc/kernel/entry.S           |   45 +++++++++++++-
 arch/sparc/kernel/irq_32.c          |   10 +++
 arch/sparc/kernel/leon_smp.c        |  109 
++++++++++++++++++++++++++++++++++-
 arch/sparc/kernel/smp_32.c          |   52 +++++++++++++++--
 arch/sparc/kernel/sun4m_smp.c       |   29 +++++++++
 9 files changed, 251 insertions(+), 28 deletions(-)

Re: [PATCH 0/3] sparc32: SMP IPI patches

[David Miller]

From: Daniel Hellstrom <daniel@gaisler.com>
Date: Wed, 27 Apr 2011 15:18:43 +0200

> I have made a new set of IPI patches, this time it includes a patch
> for SUN4M but still missing SUN4D however.
> 
> I have tried to use BTFIXUPs and extract some code from the LEON to
> the common smp_32.c as you suggested. I have left the non-spinlock
> LEON code around per-cpu work data as we discussed, I think the same
> argumentation works for sun4m to avoid races when clearing the pending
> register in the interrupt trap handler.
> 
> This time I added some IPI IRQ statistics to the genirq
> arch_show_interrupts(),
> so the patches must be applied to sparc-next containing genirq
> patches.

All 3 patches applied.

Re: [PATCH 0/3] sparc32: SMP IPI patches

[David Miller]

From: David Miller <davem@davemloft.net>
Date: Mon, 16 May 2011 13:04:28 -0700 (PDT)

> From: Daniel Hellstrom <daniel@gaisler.com>
> Date: Wed, 27 Apr 2011 15:18:43 +0200
> 
>> I have made a new set of IPI patches, this time it includes a patch
>> for SUN4M but still missing SUN4D however.
>> 
>> I have tried to use BTFIXUPs and extract some code from the LEON to
>> the common smp_32.c as you suggested. I have left the non-spinlock
>> LEON code around per-cpu work data as we discussed, I think the same
>> argumentation works for sun4m to avoid races when clearing the pending
>> register in the interrupt trap handler.
>> 
>> This time I added some IPI IRQ statistics to the genirq
>> arch_show_interrupts(),
>> so the patches must be applied to sparc-next containing genirq
>> patches.
> 
> All 3 patches applied.

Oops, I see now there was a 4-patch "v2" series, will look that
over instead. :-)