Jen Remus suggested some updates from v15: https://lore.kernel.org/linux-trace-kernel/20250725185512.673587297@xxxxxxxxxx/ Those were: - Make fp_frame into a constant - Removed useless initializing ra variable to zero git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git unwind/core Head SHA1: cf079f0176cc16e937f0fd868f0ec2d649ad53dd Josh Poimboeuf (3): unwind_user: Add user space unwinding API with frame pointer support unwind_user/deferred: Add unwind cache unwind_user/deferred: Add deferred unwinding interface Steven Rostedt (7): unwind_user/deferred: Add unwind_user_faultable() unwind_user/deferred: Make unwind deferral requests NMI-safe unwind deferred: Use bitmask to determine which callbacks to call unwind deferred: Add unwind_completed mask to stop spurious callbacks unwind: Add USED bit to only have one conditional on way back to user space unwind deferred: Use SRCU unwind_deferred_task_work() unwind: Finish up unwind when a task exits ---- MAINTAINERS | 8 + arch/Kconfig | 7 + include/asm-generic/Kbuild | 1 + include/asm-generic/unwind_user.h | 5 + include/linux/entry-common.h | 2 + include/linux/sched.h | 5 + include/linux/unwind_deferred.h | 81 ++++++++ include/linux/unwind_deferred_types.h | 39 ++++ include/linux/unwind_user.h | 14 ++ include/linux/unwind_user_types.h | 44 +++++ kernel/Makefile | 1 + kernel/exit.c | 2 + kernel/fork.c | 4 + kernel/unwind/Makefile | 1 + kernel/unwind/deferred.c | 362 ++++++++++++++++++++++++++++++++++ kernel/unwind/user.c | 128 ++++++++++++ 16 files changed, 704 insertions(+) create mode 100644 include/asm-generic/unwind_user.h create mode 100644 include/linux/unwind_deferred.h create mode 100644 include/linux/unwind_deferred_types.h create mode 100644 include/linux/unwind_user.h create mode 100644 include/linux/unwind_user_types.h create mode 100644 kernel/unwind/Makefile create mode 100644 kernel/unwind/deferred.c create mode 100644 kernel/unwind/user.c
