Messages in this thread | | | Date | Wed, 21 Sep 2022 15:54:18 -0400 | Subject | Re: [RFC PATCH v4 00/25] RSEQ node id and virtual cpu id extensions | From | Mathieu Desnoyers <> |
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On 2022-09-21 15:24, Mathieu Desnoyers wrote: > Extend the rseq ABI to expose a NUMA node ID and a vm_vcpu_id field. > > The NUMA node ID field allows implementing a faster getcpu(2) in libc. > > The virtual cpu id allows ideal scaling (down or up) of user-space > per-cpu data structures. The virtual cpu ids allocated within a memory > space are tracked by the scheduler, which takes into account the number > of concurrently running threads, thus implicitly considering the number > of threads, the cpu affinity, the cpusets applying to those threads, and > the number of logical cores on the system. > > This series is based on the v5.19 tag.
Hi Peter,
I'm having MTA issues at the moment. I will resend the series as soon as I can get hold of my sysadmin.
Sorry about that.
Thanks,
Mathieu
> > Thanks, > > Mathieu > > Mathieu Desnoyers (25): > rseq: Introduce feature size and alignment ELF auxiliary vector > entries > rseq: Introduce extensible rseq ABI > rseq: Extend struct rseq with numa node id > selftests/rseq: Use ELF auxiliary vector for extensible rseq > selftests/rseq: Implement rseq numa node id field selftest > lib: Invert _find_next_bit source arguments > lib: Implement find_{first,next}_{zero,one}_and_zero_bit > cpumask: Implement cpumask_{first,next}_{zero,one}_and_zero > sched: Introduce per memory space current virtual cpu id > rseq: Extend struct rseq with per memory space vcpu id > selftests/rseq: Remove RSEQ_SKIP_FASTPATH code > selftests/rseq: Implement rseq vm_vcpu_id field support > selftests/rseq: x86: Template memory ordering and percpu access mode > selftests/rseq: arm: Template memory ordering and percpu access mode > selftests/rseq: arm64: Template memory ordering and percpu access mode > selftests/rseq: mips: Template memory ordering and percpu access mode > selftests/rseq: ppc: Template memory ordering and percpu access mode > selftests/rseq: s390: Template memory ordering and percpu access mode > selftests/rseq: riscv: Template memory ordering and percpu access mode > selftests/rseq: Implement basic percpu ops vm_vcpu_id test > selftests/rseq: Implement parametrized vm_vcpu_id test > selftests/rseq: x86: Implement rseq_load_u32_u32 > selftests/rseq: Implement numa node id vs vm_vcpu_id invariant test > selftests/rseq: parametrized test: Report/abort on negative cpu id > tracing/rseq: Add mm_vcpu_id field to rseq_update > > fs/binfmt_elf.c | 5 + > fs/exec.c | 6 + > include/linux/cpumask.h | 86 ++ > include/linux/find.h | 123 +- > include/linux/mm.h | 25 + > include/linux/mm_types.h | 110 +- > include/linux/sched.h | 9 + > include/trace/events/rseq.h | 7 +- > include/uapi/linux/auxvec.h | 2 + > include/uapi/linux/rseq.h | 22 + > init/Kconfig | 4 + > kernel/fork.c | 11 +- > kernel/ptrace.c | 2 +- > kernel/rseq.c | 61 +- > kernel/sched/core.c | 49 + > kernel/sched/sched.h | 166 +++ > kernel/signal.c | 2 + > lib/find_bit.c | 17 +- > tools/include/linux/find.h | 9 +- > tools/lib/find_bit.c | 17 +- > tools/testing/selftests/rseq/.gitignore | 5 + > tools/testing/selftests/rseq/Makefile | 20 +- > .../testing/selftests/rseq/basic_numa_test.c | 117 ++ > .../selftests/rseq/basic_percpu_ops_test.c | 46 +- > tools/testing/selftests/rseq/basic_test.c | 4 + > tools/testing/selftests/rseq/compiler.h | 6 + > tools/testing/selftests/rseq/param_test.c | 157 ++- > tools/testing/selftests/rseq/rseq-abi.h | 22 + > tools/testing/selftests/rseq/rseq-arm-bits.h | 505 +++++++ > tools/testing/selftests/rseq/rseq-arm.h | 701 +--------- > .../testing/selftests/rseq/rseq-arm64-bits.h | 392 ++++++ > tools/testing/selftests/rseq/rseq-arm64.h | 520 +------ > .../testing/selftests/rseq/rseq-bits-reset.h | 10 + > .../selftests/rseq/rseq-bits-template.h | 39 + > tools/testing/selftests/rseq/rseq-mips-bits.h | 462 +++++++ > tools/testing/selftests/rseq/rseq-mips.h | 646 +-------- > tools/testing/selftests/rseq/rseq-ppc-bits.h | 454 +++++++ > tools/testing/selftests/rseq/rseq-ppc.h | 617 +-------- > .../testing/selftests/rseq/rseq-riscv-bits.h | 410 ++++++ > tools/testing/selftests/rseq/rseq-riscv.h | 529 +------- > tools/testing/selftests/rseq/rseq-s390-bits.h | 474 +++++++ > tools/testing/selftests/rseq/rseq-s390.h | 495 +------ > tools/testing/selftests/rseq/rseq-skip.h | 65 - > tools/testing/selftests/rseq/rseq-x86-bits.h | 1036 ++++++++++++++ > tools/testing/selftests/rseq/rseq-x86.h | 1193 +---------------- > tools/testing/selftests/rseq/rseq.c | 86 +- > tools/testing/selftests/rseq/rseq.h | 229 +++- > .../testing/selftests/rseq/run_param_test.sh | 5 + > 48 files changed, 5286 insertions(+), 4692 deletions(-) > create mode 100644 tools/testing/selftests/rseq/basic_numa_test.c > create mode 100644 tools/testing/selftests/rseq/rseq-arm-bits.h > create mode 100644 tools/testing/selftests/rseq/rseq-arm64-bits.h > create mode 100644 tools/testing/selftests/rseq/rseq-bits-reset.h > create mode 100644 tools/testing/selftests/rseq/rseq-bits-template.h > create mode 100644 tools/testing/selftests/rseq/rseq-mips-bits.h > create mode 100644 tools/testing/selftests/rseq/rseq-ppc-bits.h > create mode 100644 tools/testing/selftests/rseq/rseq-riscv-bits.h > create mode 100644 tools/testing/selftests/rseq/rseq-s390-bits.h > delete mode 100644 tools/testing/selftests/rseq/rseq-skip.h > create mode 100644 tools/testing/selftests/rseq/rseq-x86-bits.h >
-- Mathieu Desnoyers EfficiOS Inc. https://www.efficios.com
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