| From 166811dfcfc61e7646275aa993d7d7f4b02d1f49 Mon Sep 17 00:00:00 2001 |
| From: Khem Raj <raj.khem@gmail.com> |
| Date: Sat, 3 Apr 2021 12:40:14 -0700 |
| Subject: [PATCH] Use SYS_futex for syscall |
| |
| glibc defines SYS_futex and on newer 32bit CPUs like RISCV-32, arc there |
| is no 32bit time_t therefore define SYS_futex in terms of SYS_futex_time64 |
| |
| Upstream-Status: Pending |
| Signed-off-by: Khem Raj <raj.khem@gmail.com> |
| --- |
| storage/innobase/sync/srw_lock.cc | 6 ++++++ |
| 1 file changed, 6 insertions(+) |
| |
| diff --git a/storage/innobase/sync/srw_lock.cc b/storage/innobase/sync/srw_lock.cc |
| index 28b586de..3ee71142 100644 |
| --- a/storage/innobase/sync/srw_lock.cc |
| +++ b/storage/innobase/sync/srw_lock.cc |
| @@ -226,6 +226,12 @@ void ssux_lock_impl<spinloop>::wake() noexcept { WakeByAddressSingle(&readers); |
| # ifdef __linux__ |
| # include <linux/futex.h> |
| # include <sys/syscall.h> |
| +/** Newer 32bit CPUs eg. RISCV-32 are defaulting to 64bit time_t from get go and |
| + therefore do not define __NR_futex */ |
| +# if !defined(SYS_futex) && defined(SYS_futex_time64) |
| +# define SYS_futex SYS_futex_time64 |
| +# endif |
| + |
| # define SRW_FUTEX(a,op,n) \ |
| syscall(SYS_futex, a, FUTEX_ ## op ## _PRIVATE, n, nullptr, nullptr, 0) |
| # elif defined __OpenBSD__ |
