[PATCHv4 0/2] sched: arch_scale_smt_powers

Joel Schopp
2010-02-05T20:58:11Z

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(-)