[RFC PATCH for 4.15 00/24] Restartable sequences and CPU op vector v11
From: Mathieu Desnoyers
Date: Tue Nov 14 2017 - 15:04:42 EST
Here is the last RFC round of the updated rseq patchset containing:
- Restartable sequences system call (x86 32/64, powerpc 32/64, arm 32),
- CPU operation vector system call (x86 32/64, powerpc 32/64, arm 32),
- membarrier shared expedited, and private expedited core serializing
commands.
This is *not* yet a PR. I'm submitting the patchset as RFC one last
time given that I did a few small fixes, and reordered the patchset,
since the last time I sent it as RFC.
You can alternatively find this patchset as a git branch at this
location:
https://git.kernel.org/pub/scm/linux/kernel/git/rseq/linux-rseq.git
branch: v4.14-rseq-20171114
Orion Hodson is currently testing the private expedited core
serializing membarrier command on Android, where they have a
context synchronization issue reproducer on arm 64. We should know
more about this shortly.
Thanks,
Mathieu
Boqun Feng (2):
Restartable sequences: powerpc architecture support
Restartable sequences: Wire up powerpc system call
Mathieu Desnoyers (22):
Restartable sequences system call (v11)
Restartable sequences: ARM 32 architecture support
Restartable sequences: wire up ARM 32 system call
Restartable sequences: x86 32/64 architecture support
Restartable sequences: wire up x86 32/64 system call
Provide cpu_opv system call (v3)
cpu_opv: Wire up x86 32/64 system call
cpu_opv: Wire up powerpc system call
cpu_opv: Wire up ARM32 system call
cpu_opv: Implement selftests (v2)
Restartable sequences: Provide self-tests (v2)
Restartable sequences selftests: arm: workaround gcc asm size guess
membarrier: selftest: Test private expedited cmd (v2)
membarrier: powerpc: Skip memory barrier in switch_mm() (v7)
membarrier: Document scheduler barrier requirements (v5)
membarrier: provide SHARED_EXPEDITED command
membarrier: selftest: Test shared expedited cmd
membarrier: Provide core serializing command
x86: Introduce sync_core_before_usermode (v2)
membarrier: x86: Provide core serializing command (v2)
membarrier: selftest: Test private expedited sync core cmd
membarrier: arm64: Provide core serializing command
MAINTAINERS | 21 +
arch/Kconfig | 7 +
arch/arm/Kconfig | 1 +
arch/arm/kernel/signal.c | 7 +
arch/arm/tools/syscall.tbl | 2 +
arch/arm64/Kconfig | 1 +
arch/arm64/kernel/entry.S | 4 +
arch/powerpc/Kconfig | 2 +
arch/powerpc/include/asm/membarrier.h | 26 +
arch/powerpc/include/asm/systbl.h | 2 +
arch/powerpc/include/asm/unistd.h | 2 +-
arch/powerpc/include/uapi/asm/unistd.h | 2 +
arch/powerpc/kernel/signal.c | 3 +
arch/powerpc/mm/mmu_context.c | 7 +
arch/x86/Kconfig | 3 +
arch/x86/entry/common.c | 1 +
arch/x86/entry/entry_32.S | 5 +
arch/x86/entry/entry_64.S | 8 +
arch/x86/entry/syscalls/syscall_32.tbl | 2 +
arch/x86/entry/syscalls/syscall_64.tbl | 2 +
arch/x86/include/asm/processor.h | 10 +
arch/x86/kernel/signal.c | 6 +
arch/x86/mm/tlb.c | 6 +
fs/exec.c | 1 +
include/linux/processor.h | 6 +
include/linux/sched.h | 89 ++
include/linux/sched/mm.h | 39 +-
include/trace/events/rseq.h | 60 +
include/uapi/linux/cpu_opv.h | 117 ++
include/uapi/linux/membarrier.h | 66 +-
include/uapi/linux/rseq.h | 138 +++
init/Kconfig | 37 +
kernel/Makefile | 2 +
kernel/cpu_opv.c | 968 +++++++++++++++
kernel/fork.c | 2 +
kernel/rseq.c | 328 +++++
kernel/sched/core.c | 95 +-
kernel/sched/membarrier.c | 169 ++-
kernel/sched/sched.h | 2 +
kernel/sys_ni.c | 4 +
tools/testing/selftests/Makefile | 2 +
tools/testing/selftests/cpu-opv/.gitignore | 1 +
tools/testing/selftests/cpu-opv/Makefile | 17 +
.../testing/selftests/cpu-opv/basic_cpu_opv_test.c | 1157 ++++++++++++++++++
tools/testing/selftests/cpu-opv/cpu-op.c | 348 ++++++
tools/testing/selftests/cpu-opv/cpu-op.h | 68 ++
tools/testing/selftests/lib.mk | 4 +
.../testing/selftests/membarrier/membarrier_test.c | 235 +++-
tools/testing/selftests/rseq/.gitignore | 4 +
tools/testing/selftests/rseq/Makefile | 23 +
.../testing/selftests/rseq/basic_percpu_ops_test.c | 333 +++++
tools/testing/selftests/rseq/basic_test.c | 55 +
tools/testing/selftests/rseq/param_test.c | 1285 ++++++++++++++++++++
tools/testing/selftests/rseq/rseq-arm.h | 568 +++++++++
tools/testing/selftests/rseq/rseq-ppc.h | 567 +++++++++
tools/testing/selftests/rseq/rseq-x86.h | 898 ++++++++++++++
tools/testing/selftests/rseq/rseq.c | 116 ++
tools/testing/selftests/rseq/rseq.h | 154 +++
tools/testing/selftests/rseq/run_param_test.sh | 124 ++
59 files changed, 8149 insertions(+), 63 deletions(-)
create mode 100644 arch/powerpc/include/asm/membarrier.h
create mode 100644 include/trace/events/rseq.h
create mode 100644 include/uapi/linux/cpu_opv.h
create mode 100644 include/uapi/linux/rseq.h
create mode 100644 kernel/cpu_opv.c
create mode 100644 kernel/rseq.c
create mode 100644 tools/testing/selftests/cpu-opv/.gitignore
create mode 100644 tools/testing/selftests/cpu-opv/Makefile
create mode 100644 tools/testing/selftests/cpu-opv/basic_cpu_opv_test.c
create mode 100644 tools/testing/selftests/cpu-opv/cpu-op.c
create mode 100644 tools/testing/selftests/cpu-opv/cpu-op.h
create mode 100644 tools/testing/selftests/rseq/.gitignore
create mode 100644 tools/testing/selftests/rseq/Makefile
create mode 100644 tools/testing/selftests/rseq/basic_percpu_ops_test.c
create mode 100644 tools/testing/selftests/rseq/basic_test.c
create mode 100644 tools/testing/selftests/rseq/param_test.c
create mode 100644 tools/testing/selftests/rseq/rseq-arm.h
create mode 100644 tools/testing/selftests/rseq/rseq-ppc.h
create mode 100644 tools/testing/selftests/rseq/rseq-x86.h
create mode 100644 tools/testing/selftests/rseq/rseq.c
create mode 100644 tools/testing/selftests/rseq/rseq.h
create mode 100755 tools/testing/selftests/rseq/run_param_test.sh
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2.11.0