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Linux: Add the sched_setattr and sched_getattr functions

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And struct sched_attr.

In sysdeps/unix/sysv/linux/bits/sched.h, the hack that defines
sched_param around the inclusion of <linux/sched/types.h> is quite
ugly, but the definition of struct sched_param has already been
dropped by the kernel, so there is nothing else we can do and maintain
compatibility of <sched.h> with a wide range of kernel header
versions.  (An alternative would involve introducing a separate header
for this functionality, but this seems unnecessary.)

The existing sched_* functions that change scheduler parameters
are already incompatible with PTHREAD_PRIO_PROTECT mutexes, so
there is no harm in adding more functionality in this area.

The documentation mostly defers to the Linux manual pages.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Florian Weimer
2024-09-11 10:05:08 +02:00
parent 298bc488fd
commit 21571ca0d7
41 changed files with 391 additions and 2 deletions
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2
sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
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@ -3157,6 +3157,8 @@ GLIBC_2.4 wcstold F
GLIBC_2.4 wcstold_l F
GLIBC_2.4 wprintf F
GLIBC_2.4 wscanf F
GLIBC_2.41 sched_getattr F
GLIBC_2.41 sched_setattr F
GLIBC_2.5 __readlinkat_chk F
GLIBC_2.5 inet6_opt_append F
GLIBC_2.5 inet6_opt_find F

2
sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
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@ -2793,6 +2793,8 @@ GLIBC_2.4 sys_errlist D 0x430
GLIBC_2.4 sys_nerr D 0x4
GLIBC_2.4 unlinkat F
GLIBC_2.4 unshare F
GLIBC_2.41 sched_getattr F
GLIBC_2.41 sched_setattr F
GLIBC_2.5 __readlinkat_chk F
GLIBC_2.5 inet6_opt_append F
GLIBC_2.5 inet6_opt_find F