CPU_POKE is a low latency path to resume the target cpu if suspended using CPU_YIELD. Use CPU_POKE to resume cpu if supported by hypervisor. Hackbench results (lower is better): Number of Process: w/o fix with fix 1 0.012 0.010 10 0.021 0.019 100 0.151 0.148 Changelog: v2: - Fixed comments and spacing (2/2) Vijay Kumar (2): sparc64: Add a new hypercall CPU_POKE sparc64: Use cpu_poke to resume idle cpu arch/sparc/include/asm/hypervisor.h | 18 ++++++++ arch/sparc/include/asm/smp_64.h | 5 ++ arch/sparc/kernel/hvapi.c | 2 +- arch/sparc/kernel/hvcalls.S | 11 +++++ arch/sparc/kernel/process_64.c | 7 +++- arch/sparc/kernel/setup_64.c | 1 + arch/sparc/kernel/smp_64.c | 80 +++++++++++++++++++++++++++++++++- 7 files changed, 119 insertions(+), 5 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
