This patch adds the CLONE_PIDFD constant from Linux 5.2 to glibc's
bits/sched.h.
Tested for x86_64.
* sysdeps/unix/sysv/linux/bits/sched.h [__USE_GNU] (CLONE_PIDFD):
New macro.
* bits/sched.h: Include <bits/types/struct_sched_param.h> and move struct
sched_param definition to it.
* sysdeps/unix/sysv/linux/bits/sched.h: Likewise.
* bits/types/struct_sched_param.h: New file.
* sysdeps/htl/bits/types/struct___pthread_attr.h: Include
<bits/types/struct_sched_param.h> instead of <sched.h>.
* posix/Makefile (headers): Add bits/types/struct_sched_param.h.
bits/sched.h has logic to expose only an impl-namespace variant of
struct sched_param (i.e. struct __sched_param), but nothing uses it,
and the only header that includes bits/sched.h is sched.h. The
__need_schedparam logic can therefore be removed.
bits/sched.h also has a great deal of code relating to cpu_set_t
objects that was *almost* the same between the two versions of
bits/sched.h in the tree; a little spelunking indicated that this is
because some bug fixes got applied to the Linux-specific bits/sched.h
but not the generic one. Introduce a new header, bits/cpu-set.h,
containing the version of that code with the bugfixes, have sched.h
include it directly, and delete all of the code from both versions of
bits/sched.h.
Also remove the unnecessary name mangling in the definition of struct
sched_param -- POSIX specifies a field 'sched_priority', so there is
no reason to define it as '__sched_priority' and then paper over that
with a macro. (Just in case someone was using the internal name,
'sched_priority' remains a macro defined to expand to itself, and
'__sched_priority' now expands to 'sched_priority'.)
Finally, as long as I'm touching these files anyway, merge new
constants from linux/sched.h into the Linux bits/sched.h.
* bits/sched.h: Remove __need_schedparam logic and replace with a
normal multiple-include guard. Change field name in struct
sched_param from __sched_priority to sched_priority. Delete
everything under #ifndef __cpu_set_t_defined.
* sysdeps/unix/sysv/linux/bits/sched.h: Likewise. Also sync with
kernel sched.h, adding SCHED_ISO and SCHED_DEADLINE constants.
* posix/sched.h: Include bits/cpu-set.h as well as bits/sched.h.
For compatibility, #define sched_priority to itself, and #define
__sched_priority as sched_priority.
* posix/bits/cpu-set.h: New file containing, verbatim, the code
that was under #ifndef __cpu_set_t_defined in
sysdeps/unix/sysv/linux/bits/sched.h.
* include/bits/cpu-set.h: New wrapper.
* posix/Makefile: Install bits/cpu-set.h.
This patch adds CLONE_NEWCGROUP, new in Linux 4.6, to
sysdeps/unix/sysv/linux/bits/sched.h.
Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).
* sysdeps/unix/sysv/linux/bits/sched.h [__USE_GNU]
(CLONE_NEWCGROUP): New macro.
Since x86-64 and x32 use the same set of sched_XXX system call interface:
[hjl@gnu-6 linux-stable]$ grep sched_
arch/x86/entry/syscalls/syscall_64.tbl
24 common sched_yield sys_sched_yield
142 common sched_setparam sys_sched_setparam
143 common sched_getparam sys_sched_getparam
144 common sched_setscheduler sys_sched_setscheduler
145 common sched_getscheduler sys_sched_getscheduler
146 common sched_get_priority_max sys_sched_get_priority_max
147 common sched_get_priority_min sys_sched_get_priority_min
148 common sched_rr_get_interval sys_sched_rr_get_interval
203 common sched_setaffinity sys_sched_setaffinity
204 common sched_getaffinity sys_sched_getaffinity
314 common sched_setattr sys_sched_setattr
315 common sched_getattr sys_sched_getattr
[hjl@gnu-6 linux-stable]$
__cpu_mask should be unsigned long long, instead of unsigned long, for
x32. This patch adds __CPU_MASK_TYPE so that each architecture can
define the proper type for __cpu_mask.
[BZ #19313]
* bits/typesizes.h (__CPU_MASK_TYPE): New.
* sysdeps/mach/hurd/bits/typesizes.h (__CPU_MASK_TYPE): Likewise.
* sysdeps/nacl/bits/typesizes.h (__CPU_MASK_TYPE): Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/typesizes.h (__CPU_MASK_TYPE):
Likewise.
* sysdeps/unix/sysv/linux/generic/bits/typesizes.h (__CPU_MASK_TYPE):
Likewise.
* sysdeps/unix/sysv/linux/s390/bits/typesizes.h (__CPU_MASK_TYPE):
Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/typesizes.h (__CPU_MASK_TYPE):
Likewise.
* sysdeps/unix/sysv/linux/x86/bits/typesizes.h (__CPU_MASK_TYPE):
* sysdeps/unix/sysv/linux/bits/sched.h (__cpu_mask): Replace
unsigned long int with __CPU_MASK_TYPE.
2008-11-13 Ulrich Drepper <drepper@redhat.com>
[BZ #7029]
* sysdeps/unix/sysv/linux/bits/sched.h (__CPU_ALLOC_SIZE):
Multiply with sizeof of __cpu_mask, not 8 unconditionally after
all the rounding.
* sysdeps/unix/sysv/linux/sched_getcpu.c: New file.
* sysdeps/unix/sysv/linux/x86_64/sched_getcpu.S: New file.
* sysdeps/unix/sysv/linux/Versions: Export sched_getcpu for
GLIBC_2.6.
* sysdeps/unix/sysv/linux/Versions [libc, GLIBC_2.4]: Export
unshare.
* sysdeps/unix/sysv/linux/syscalls.list: Add unshare syscall.
* sysdeps/unix/Makefile ($(objpfx)stub-syscalls.c): Add some
preprocessor magic so that the compiler won't see the prototypes
for the functions we are defining as stubs.
2003-07-20 Ulrich Drepper <drepper@redhat.com>
* Makefile (libpthread-routines): Add pthread_attr_getaffinity and
pthread_attr_setaffinity.
* Versions [libpthread] (GLIBC_2.3.3): Likewise.
* sysdeps/unix/sysv/linux/pthread_attr_getaffinity.c: New file.
* sysdeps/unix/sysv/linux/pthread_attr_setaffinity.c: New file.
* pthread_attr_destroy.c: Free cpuset element if allocated.
* pthread_create.c: Pass iattr as additional parameter to
create_thread.
* sysdeps/pthread/createthread.c: If attribute is provided and
a new thread is created with affinity set or scheduling parameters,
start thread with CLONE_STOPPED.
* sysdeps/pthread/pthread.h: Declare pthread_attr_getaffinity and
pthread_attr_setaffinity.
* sysdeps/unix/sysv/linux/internaltypes.h (struct pthread_attr): Add
cpuset element.
2003-05-10 Ulrich Drepper <drepper@redhat.com>
* sysdeps/generic/bits/sched.h: Define cpu_set_t only if not
already defined and when really needed.
* sysdeps/unix/sysv/linux/bits/sched.h: Likewise.
2001-07-06 Paul Eggert <eggert@twinsun.com>
* manual/argp.texi: Remove ignored LGPL copyright notice; it's
not appropriate for documentation anyway.
* manual/libc-texinfo.sh: "Library General Public License" ->
"Lesser General Public License".
2001-07-06 Andreas Jaeger <aj@suse.de>
* All files under GPL/LGPL version 2: Place under LGPL version
2.1.
