| From 5827f6389a227157958d14a687fb29223cb3a03a Mon Sep 17 00:00:00 2001 |
| From: Mingli Yu <mingli.yu@windriver.com> |
| Date: Wed, 7 Apr 2021 07:48:42 +0000 |
| Subject: [PATCH] xshmfence_futex.h: Define SYS_futex if it does not exist |
| |
| _NR_futex is not defines by newer architectures e.g. riscv32 as |
| they only have 64bit variant of time_t. Glibc defines SYS_futex |
| interface based on __NR_futex, since this is used in applications, |
| such applications start to fail to build for these newer architectures. |
| This patch defines a fallback to alias __NR_futex to __NR_futex_time64 |
| to make SYS_futex keep working. |
| |
| Reference: https://git.openembedded.org/openembedded-core/commit/?id=7a218adf9990f5e18d0b6a33eb34091969f979c7 |
| |
| Upstream-Status: Pending |
| |
| Signed-off-by: Mingli Yu <mingli.yu@windriver.com> |
| --- |
| src/xshmfence_futex.h | 4 ++++ |
| 1 file changed, 4 insertions(+) |
| |
| diff --git a/src/xshmfence_futex.h b/src/xshmfence_futex.h |
| index 673ac0e..a71efa5 100644 |
| --- a/src/xshmfence_futex.h |
| +++ b/src/xshmfence_futex.h |
| @@ -53,6 +53,10 @@ static inline int futex_wait(int32_t *addr, int32_t value) { |
| #include <sys/time.h> |
| #include <sys/syscall.h> |
| |
| +#if !defined(SYS_futex) && defined(SYS_futex_time64) |
| +#define SYS_futex SYS_futex_time64 |
| +#endif |
| + |
| static inline long sys_futex(void *addr1, int op, int val1, struct timespec *timeout, void *addr2, int val3) |
| { |
| return syscall(SYS_futex, addr1, op, val1, timeout, addr2, val3); |
| -- |
| 2.29.2 |
| |