This is an update on v0.3: https://lore.kernel.org/patchwork/cover/1461708/ Key changes v0.3 => v0.4: - made idle workers list logic simpler - only one idle server tracking - removed two fields from struct umcg_task - added timeout handling - added worker preemption - added a doc patch that now documents the syscalls and state transitions. More details on the state of the patchset and future work are provided in the patch 4 commit message. Peter Oskolkov (4): sched: add WF_CURRENT_CPU and externise ttwu sched/umcg: RFC: add userspace atomic helpers sched/umcg: add Documentation/userspace-api/umcg.rst sched/umcg: RFC: implement UMCG syscalls Documentation/userspace-api/umcg.rst | 532 ++++++++++++++++++++++ arch/x86/entry/syscalls/syscall_64.tbl | 2 + include/linux/sched.h | 6 + include/linux/syscalls.h | 4 + include/uapi/asm-generic/unistd.h | 8 +- include/uapi/linux/umcg.h | 114 +++++ init/Kconfig | 10 + kernel/exit.c | 7 + kernel/sched/Makefile | 1 + kernel/sched/core.c | 20 +- kernel/sched/fair.c | 4 + kernel/sched/sched.h | 15 +- kernel/sched/umcg.c | 601 +++++++++++++++++++++++++ kernel/sched/umcg.h | 211 +++++++++ kernel/sys_ni.c | 4 + 15 files changed, 1528 insertions(+), 11 deletions(-) create mode 100644 Documentation/userspace-api/umcg.rst create mode 100644 include/uapi/linux/umcg.h create mode 100644 kernel/sched/umcg.c create mode 100644 kernel/sched/umcg.h -- 2.25.1
