Use SYS_futex for syscall
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glibc defines SYS_futex and on newer 32bit CPUs like RISCV-32, arc there
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is no 32bit time_t therefore define SYS_futex in terms of SYS_futex_time64
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Upstream-Status: Pending
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
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--- a/storage/innobase/sync/srw_lock.cc
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+++ b/storage/innobase/sync/srw_lock.cc
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@@ -210,6 +210,12 @@ void ssux_lock_low::wake() { WakeByAddre
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# ifdef __linux__
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# include <linux/futex.h>
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# include <sys/syscall.h>
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+/** Newer 32bit CPUs eg. RISCV-32 are defaulting to 64bit time_t from get go and
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+ therefore do not define __NR_futex */
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+# if !defined(SYS_futex) && defined(SYS_futex_time64)
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+# define SYS_futex SYS_futex_time64
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+# endif
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+
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# define SRW_FUTEX(a,op,n) \
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syscall(SYS_futex, a, FUTEX_ ## op ## _PRIVATE, n, nullptr, nullptr, 0)
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# elif defined __OpenBSD__
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