linux-kernel - [PATCHv4 0/2] sched: arch_scale_smt

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Date:	Fri, 05 Feb 2010 14:57:46 -0600
From:	Joel Schopp <jschopp@...tin.ibm.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	ego@...ibm.com, linuxppc-dev@...ts.ozlabs.org,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	benh@...nel.crashing.org, jschopp@...tin.ibm.com
Subject: [PATCHv4 0/2] sched: arch_scale_smt_powers

The new Power7 processor has 4 way SMT.  This 4 way SMT benefits from
dynamic power updates that arch_scale_smt_power was designed to provide.
The first patch fixes a generic scheduler bug necessary for arch_scale_smt
to properly function.  The second patch implements arch_scale_smt_power 
for powerpc, and in particular for Power7 processors.

Version 2 changes:
- Drop Patch 1 from the original series since it's in the -tip tree now
- Move enabling the cpu feature into it's own patch (now patch 1)
- Add stubbing out broken x86 implementation to patch 1
- clean up coding style in patch 2

Version 3 changes:
- Added a comment to Patch 2

Version 4 changes:
- Wrap arch_scale_smt_power() in #ifdef CONFIG_SCHED_SMT in Patch 2

---
Joel Schopp (2):
sched: enable ARCH_POWER
powerpc: implement arch_scale_smt_power for Power7

 arch/powerpc/include/asm/cputable.h |    3 +
 arch/powerpc/kernel/smp.c           |   58
++++++++++++++++++++++++++++++++++++
 arch/x86/kernel/cpu/sched.c         |    6 +--
 kernel/sched_features.h             |    2 -
 4 files changed, 63 insertions(+), 6 deletions(-)


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