On Mon, Apr 30, 2018 at 06:44:21PM -0400, Mathieu Desnoyers wrote: > Expose a new system call allowing each thread to register one userspace > memory area to be used as an ABI between kernel and user-space for two > purposes: user-space restartable sequences and quick access to read the > current CPU number value from user-space.
> --- > MAINTAINERS | 11 ++ > arch/Kconfig | 7 + > fs/exec.c | 1 + > include/linux/sched.h | 134 +++++++++++++++++ > include/linux/syscalls.h | 4 +- > include/trace/events/rseq.h | 57 +++++++ > include/uapi/linux/rseq.h | 133 +++++++++++++++++ > init/Kconfig | 23 +++ > kernel/Makefile | 1 + > kernel/fork.c | 2 + > kernel/rseq.c | 357 > ++++++++++++++++++++++++++++++++++++++++++++ > kernel/sched/core.c | 2 + > kernel/sys_ni.c | 3 + > 13 files changed, 734 insertions(+), 1 deletion(-) > create mode 100644 include/trace/events/rseq.h > create mode 100644 include/uapi/linux/rseq.h > create mode 100644 kernel/rseq.c > Acked-by: Peter Zijlstra (Intel) <[email protected]>
