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(-) _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
