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@@ -0,0 +1,31 @@
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+From 8973e297f2f9b17498b9dc0e37a19481d4bb7df9 Mon Sep 17 00:00:00 2001
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+From: Khem Raj <raj.khem@gmail.com>
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+Date: Fri, 16 Oct 2020 11:03:47 -0700
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+Subject: [PATCH] futex.h: Define __NR_futex if it does not exist
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+
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+__NR_futex is not defines by newer architectures e.g. arc, riscv32 as
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+they only have 64bit variant of time_t. Glibc defines SYS_futex interface based on
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+__NR_futex, since this is used in applications, such applications start
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+to fail to build for these newer architectures. This patch defines a
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+fallback to alias __NR_futex to __NR_futex_tim64 so SYS_futex keeps
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+working
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+
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+Upstream-Status: Pending
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+Signed-off-by: Khem Raj <raj.khem@gmail.com>
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+---
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+ src/util/futex.h | 4 ++++
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+ 1 file changed, 4 insertions(+)
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+
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+--- a/src/util/futex.h
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++++ b/src/util/futex.h
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+@@ -34,6 +34,10 @@
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+ #include <sys/syscall.h>
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+ #include <sys/time.h>
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+
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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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+ static inline long sys_futex(void *addr1, int op, int val1, const struct timespec *timeout, void *addr2, int val3)
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+ {
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+ return syscall(SYS_futex, addr1, op, val1, timeout, addr2, val3);
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