Hi,
I'm sending this series for feedback. There appears to be a lot of
interest in the virtual cpu id feature for use in user-space memory
allocators (e.g. glibc malloc), so I am sending this out as RFC.
The most interesting patch in here is "sched: Introduce per memory space
current virtual cpu id". So if you want to jump to the meat, go
immediately to that patch.
This series is based on the tip tree core/sched branch [1] at commit
ed3b362d54f0 ("sched/isolation: Split housekeeping cpumask per isolation
features").
Feedback is welcome!
Thanks,
Mathieu
[1] https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/
Mathieu Desnoyers (11):
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: Implement rseq vm_vcpu_id field support
fs/binfmt_elf.c | 5 +
fs/exec.c | 4 +
include/linux/cpumask.h | 94 ++++++
include/linux/find.h | 123 +++++++-
include/linux/mm.h | 25 ++
include/linux/mm_types.h | 111 +++++++
include/linux/sched.h | 9 +
include/trace/events/rseq.h | 4 +-
include/uapi/linux/auxvec.h | 2 +
include/uapi/linux/rseq.h | 22 ++
init/Kconfig | 4 +
kernel/fork.c | 15 +-
kernel/ptrace.c | 2 +-
kernel/rseq.c | 60 +++-
kernel/sched/core.c | 82 +++++
kernel/sched/deadline.c | 3 +
kernel/sched/debug.c | 13 +
kernel/sched/fair.c | 1 +
kernel/sched/rt.c | 2 +
kernel/sched/sched.h | 364 ++++++++++++++++++++++
kernel/sched/stats.c | 16 +-
lib/find_bit.c | 17 +-
tools/include/linux/find.h | 9 +-
tools/lib/find_bit.c | 17 +-
tools/testing/selftests/rseq/basic_test.c | 5 +
tools/testing/selftests/rseq/rseq-abi.h | 22 ++
tools/testing/selftests/rseq/rseq.c | 86 ++++-
tools/testing/selftests/rseq/rseq.h | 46 ++-
28 files changed, 1106 insertions(+), 57 deletions(-)
--
2.17.1
