glibc 2.41+ has added [1] definitions for sched_setattr and sched_getattr functions
and struct sched_attr. Therefore, it needs to be checked for here as well before
defining sched_attr

Define sched_attr conditionally on SCHED_ATTR_SIZE_VER0

Fixes builds with glibc/trunk

[1] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=21571ca0d70302909cf72707b2a7736cf12190a0;hp=298bc488fdc047da37482f4003023cb9adef78f8

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Laurent Vivier <laurent@vivier.eu>
Cc: Paolo Bonzini <pbonzini@redhat.com>
---
v2: Use SCHED_ATTR_SIZE_VER0 instead of glibc version check

 linux-user/syscall.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 1354e75694..caecbb765d 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -359,7 +359,8 @@ _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity
 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len,
           unsigned long *, user_mask_ptr);
-/* sched_attr is not defined in glibc */
+/* sched_attr is not defined in glibc < 2.41 */
+#ifndef SCHED_ATTR_SIZE_VER0
 struct sched_attr {
     uint32_t size;
     uint32_t sched_policy;
@@ -372,6 +373,7 @@ struct sched_attr {
     uint32_t sched_util_min;
     uint32_t sched_util_max;
 };
+#endif
 #define __NR_sys_sched_getattr __NR_sched_getattr
 _syscall4(int, sys_sched_getattr, pid_t, pid, struct sched_attr *, attr,
           unsigned int, size, unsigned int, flags);