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linux-user: Do not define struct sched_attr if libc headers do

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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, to avoid
a compilation failure.

Define sched_attr conditionally only when SCHED_ATTR_SIZE_VER0 is
not defined.

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

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2799
Cc: qemu-stable@nongnu.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Khem Raj 2025-02-07 16:09:20 +00:00 • committed by Peter Maydell
parent 751002e74a
commit 27a8d899c7
1 changed files with 3 additions and 1 deletions
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4
linux-user/syscall.c
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@ -360,7 +360,8 @@ _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;
@ -373,6 +374,7 @@ 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);