[PATCH 0/6] Fixup perf tests for 32-bit systems with 64-bit time_t

From: Alistair Francis
Date: Fri Oct 28 2022 - 05:58:03 EST


From: Alistair Francis <alistair.francis@xxxxxxx>

This series aims to fix perf for 32-bit systems with a 64-bit time_t
(like RV32).

This series also adds a public futex waitv syscall that userspace
can use to avoid this complexity.

This series hasn't addressed the build failure pointed out in:
https://patchwork.kernel.org/project/linux-riscv/patch/20211209235857.423773-1-alistair.francis@xxxxxxxxxxxxxxxxxx/
as I'm unable to reproduce it and unclear on how it can be fixed.

v6:
- No change

Alistair Francis (6):
perf bench futex: Add support for 32-bit systems with 64-bit time_t
selftests: futex: Call the futex syscall from a function
uapi: futex: Add a futex syscall
selftests: futex: Add support for 32-bit systems with 64-bit time_t
uapi: futex: Add a futex waitv syscall
selftests: futex: Use futex_waitv helper function

include/uapi/linux/futex_syscall.h | 119 ++++++++++++++++++
tools/perf/bench/futex.h | 52 +++++++-
.../futex/functional/futex_requeue_pi.c | 2 +-
.../selftests/futex/include/futex2test.h | 3 +-
.../selftests/futex/include/futextest.h | 60 +++++----
5 files changed, 206 insertions(+), 30 deletions(-)
create mode 100644 include/uapi/linux/futex_syscall.h

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2.37.3