Commit Graph

23 Commits

Author SHA1 Message Date
Florian Weimer
78e132b319 Linux: sched_setaffinity syscall number is always available
Due to the built-in tables, __NR_sched_setaffinity is always defined.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2020-03-03 12:12:42 +01:00
Joseph Myers
d614a75396 Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
Paul Eggert
5a82c74822 Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:

sed -ri '
  s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
  s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
  $(find $(git ls-files) -prune -type f \
      ! -name '*.po' \
      ! -name 'ChangeLog*' \
      ! -path COPYING ! -path COPYING.LIB \
      ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
      ! -path manual/texinfo.tex ! -path scripts/config.guess \
      ! -path scripts/config.sub ! -path scripts/install-sh \
      ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
      ! -path INSTALL ! -path  locale/programs/charmap-kw.h \
      ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
      ! '(' -name configure \
            -execdir test -f configure.ac -o -f configure.in ';' ')' \
      ! '(' -name preconfigure \
            -execdir test -f preconfigure.ac ';' ')' \
      -print)

and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:

  chmod a+x sysdeps/unix/sysv/linux/riscv/configure
  # Omit irrelevant whitespace and comment-only changes,
  # perhaps from a slightly-different Autoconf version.
  git checkout -f \
    sysdeps/csky/configure \
    sysdeps/hppa/configure \
    sysdeps/riscv/configure \
    sysdeps/unix/sysv/linux/csky/configure
  # Omit changes that caused a pre-commit check to fail like this:
  # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
  git checkout -f \
    sysdeps/powerpc/powerpc64/ppc-mcount.S \
    sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
  # Omit change that caused a pre-commit check to fail like this:
  # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
  git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 02:43:31 -07:00
Joseph Myers
04277e02d7 Update copyright dates with scripts/update-copyrights.
* All files with FSF copyright notices: Update copyright dates
	using scripts/update-copyrights.
	* locale/programs/charmap-kw.h: Regenerated.
	* locale/programs/locfile-kw.h: Likewise.
2019-01-01 00:11:28 +00:00
Joseph Myers
688903eb3e Update copyright dates with scripts/update-copyrights.
* All files with FSF copyright notices: Update copyright dates
	using scripts/update-copyrights.
	* locale/programs/charmap-kw.h: Regenerated.
	* locale/programs/locfile-kw.h: Likewise.
2018-01-01 00:32:25 +00:00
H.J. Lu
d0a4512bd4 Hide internal __sched_setaffinity_new function [BZ #18822]
Hide internal __sched_setaffinity_new function to allow direct access
within libc.so and libc.a without using GOT nor PLT.

	[BZ #18822]
	* sysdeps/unix/sysv/linux/sched_setaffinity.c
	(__sched_setaffinity_new): Add libc_hidden_proto and
	libc_hidden_def.
2017-10-01 18:03:59 -07:00
Joseph Myers
bfff8b1bec Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Joseph Myers
f7a9f785e5 Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Florian Weimer
2359035ac5 Remove CPU set size checking from affinity functions [BZ #19143]
With current kernel versions, the check does not reliably detect that
unavailable CPUs are requested, for these reasons:

(1) The kernel will silently ignore non-allowed CPUs, that is, CPUs
    which are physically present but disallowed for the thread
    based on system configuration.

(2) Similarly, CPU bits which lack an online CPU (possible CPUs)
    are ignored.

(3) The existing probing code assumes that the CPU mask size is a
    power of two and at least 1024.  Neither has it to be a power
    of two, nor is the minimum possible value 1024, so the value
    determined is often too large.  This means that the CPU set
    size check in glibc accepts CPU bits beyond the actual hard
    system limit.

(4) Future kernel versions may not even have a fixed CPU set size.

After the removal of the probing code, the kernel still returns
EINVAL if no CPU in the requested set remains which can run the
thread after the affinity change.

Applications which care about the exact affinity mask will have
to query it using sched_getaffinity after setting it.  Due to the
effects described above, this commit does not change this.

The new tests supersede tst-getcpu, which is removed.  This
addresses bug 19164 because the new tests allocate CPU sets
dynamically.

	* nptl/check-cpuset.h: Remove.
	* nptl/pthread_attr_setaffinity.c (__pthread_attr_setaffinity_new):
	Remove CPU set size check.
	* nptl/pthread_setattr_default_np.c (pthread_setattr_default_np):
	Likewise.
	* sysdeps/unix/sysv/linux/check-cpuset.h: Remove.
	* sysdeps/unix/sysv/linux/pthread_setaffinity.c
	(__kernel_cpumask_size, __determine_cpumask_size): Remove.
	(__pthread_setaffinity_new): Remove CPU set size check.
	* sysdeps/unix/sysv/linux/sched_setaffinity.c
	(__kernel_cpumask_size): Remove.
	(__sched_setaffinity_new): Remove CPU set size check.
	* manual/threads.texi (Default Thread Attributes): Remove stale
	reference to check_cpuset_attr, determine_cpumask_size in comment.
	* sysdeps/unix/sysv/linux/Makefile [$(subdir) == posix] (tests):
	Remove tst-getcpu.  Add tst-affinity, tst-affinity-pid.
	[$(subdir) == nptl] (tests): Add tst-thread-affinity-pthread,
	tst-thread-affinity-pthread2, tst-thread-affinity-sched.
	* sysdeps/unix/sysv/linux/tst-affinity.c: New file.
	* sysdeps/unix/sysv/linux/tst-affinity-pid.c: New file.
	* sysdeps/unix/sysv/linux/tst-skeleton-affinity.c: New skeleton test file.
	* sysdeps/unix/sysv/linux/tst-thread-affinity-sched.c: New file.
	* sysdeps/unix/sysv/linux/tst-thread-affinity-pthread.c: New file.
	* sysdeps/unix/sysv/linux/tst-thread-affinity-pthread2.c: New file.
	* sysdeps/unix/sysv/linux/tst-thread-skeleton-affinity.c: New
	skeleton test file.
	* sysdeps/unix/sysv/linux/tst-getcpu.c: Remove.  Superseded by
	tst-affinity-pid.
2015-11-24 17:21:01 +01:00
Joseph Myers
b168057aaa Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
Ondřej Bílka
a1ffb40e32 Use glibc_likely instead __builtin_expect. 2014-02-10 15:07:12 +01:00
Allan McRae
d4697bc93d Update copyright notices with scripts/update-copyrights 2014-01-01 22:00:23 +10:00
Joseph Myers
568035b787 Update copyright notices with scripts/update-copyrights. 2013-01-02 19:05:09 +00:00
Paul Eggert
59ba27a63a Replace FSF snail mail address with URLs. 2012-02-09 23:18:22 +00:00
Ulrich Drepper
3771196d1d * sysdeps/unix/sysv/linux/sched_setaffinity.c
(__sched_setaffinity_new): If syscall was successful and
	RESET_VGETCPU_CACHE is defined, use it before returning.
	* sysdeps/unix/sysv/linux/x86_64/sched_setaffinity.c: New file.
2007-05-10 23:38:55 +00:00
Roland McGrath
2826ac7e14 * sysdeps/alpha/fpu/s_cacosf.c: Don't use sysdeps/generic/.
* sysdeps/alpha/fpu/s_cacoshf.c: Likewise.
	* sysdeps/alpha/fpu/s_casinf.c: Likewise.
	* sysdeps/alpha/fpu/s_casinhf.c: Likewise.
	* sysdeps/alpha/fpu/s_catanf.c: Likewise.
	* sysdeps/alpha/fpu/s_catanhf.c: Likewise.
	* sysdeps/alpha/fpu/s_ccosf.c: Likewise.
	* sysdeps/alpha/fpu/s_ccoshf.c: Likewise.
	* sysdeps/alpha/fpu/s_cexpf.c: Likewise.
	* sysdeps/alpha/fpu/s_clog10f.c: Likewise.
	* sysdeps/alpha/fpu/s_clogf.c: Likewise.
	* sysdeps/alpha/fpu/s_cpowf.c: Likewise.
	* sysdeps/alpha/fpu/s_cprojf.c: Likewise.
	* sysdeps/alpha/fpu/s_csinf.c: Likewise.
	* sysdeps/alpha/fpu/s_csinhf.c: Likewise.
	* sysdeps/alpha/fpu/s_csqrtf.c: Likewise.
	* sysdeps/alpha/fpu/s_ctanf.c: Likewise.
	* sysdeps/alpha/fpu/s_ctanhf.c: Likewise.
	* sysdeps/alpha/libc-tls.c: Likewise.
	* sysdeps/gnu/glob64.c: Likewise.
	* sysdeps/gnu/updwtmp.c: Likewise.
	* sysdeps/gnu/utmp_file.c: Likewise.
	* sysdeps/i386/bzero.c: Likewise.
	* sysdeps/i386/ffs.c: Likewise.
	* sysdeps/i386/i686/ffs.c: Likewise.
	* sysdeps/i386/memset.c: Likewise.
	* sysdeps/ia64/fpu/printf_fphex.c: Likewise.
	* sysdeps/ia64/libc-tls.c: Likewise.
	* sysdeps/ieee754/ldbl-128/printf_fphex.c: Likewise.
	* sysdeps/m68k/ffs.c: Likewise.
	* sysdeps/mach/hurd/getdents.c: Likewise.
	* sysdeps/mach/hurd/init-posix.c: Likewise.
	* sysdeps/mach/msync.c: Likewise.
	* sysdeps/mips/libc-tls.c: Likewise.
	* sysdeps/posix/profil.c: Likewise.
	* sysdeps/posix/shm_open.c: Likewise.
	* sysdeps/posix/shm_unlink.c: Likewise.
	* sysdeps/posix/sprofil.c: Likewise.
	* sysdeps/powerpc/ffs.c: Likewise.
	* sysdeps/rs6000/ffs.c: Likewise.
	* sysdeps/s390/libc-tls.c: Likewise.
	* sysdeps/unix/sysv/linux/aio_sigqueue.c: Likewise.
	* sysdeps/unix/sysv/linux/alpha/glob.c: Likewise.
	* sysdeps/unix/sysv/linux/alpha/wordexp.c: Likewise.
	* sysdeps/unix/sysv/linux/ftruncate64.c: Likewise.
	* sysdeps/unix/sysv/linux/gai_sigqueue.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getresgid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getresuid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/lchown.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/putmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/readelflib.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/setresgid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/setresuid.c: Likewise.
	* sysdeps/unix/sysv/linux/ia64/readelflib.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/ftruncate64.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/readelflib.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/truncate64.c: Likewise.
	* sysdeps/unix/sysv/linux/mq_close.c: Likewise.
	* sysdeps/unix/sysv/linux/mq_getattr.c: Likewise.
	* sysdeps/unix/sysv/linux/mq_notify.c: Likewise.
	* sysdeps/unix/sysv/linux/mq_open.c: Likewise.
	* sysdeps/unix/sysv/linux/mq_receive.c: Likewise.
	* sysdeps/unix/sysv/linux/mq_send.c: Likewise.
	* sysdeps/unix/sysv/linux/mq_unlink.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/readelflib.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/readelflib.c: Likewise.
	* sysdeps/unix/sysv/linux/sched_getaffinity.c: Likewise.
	* sysdeps/unix/sysv/linux/sched_setaffinity.c: Likewise.
	* sysdeps/unix/sysv/linux/sigqueue.c: Likewise.
	* sysdeps/unix/sysv/linux/sigstack.c: Likewise.
	* sysdeps/unix/sysv/linux/sigtimedwait.c: Likewise.
	* sysdeps/unix/sysv/linux/sigwaitinfo.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/readelflib.c: Likewise.
	* sysdeps/unix/sysv/linux/truncate64.c: Likewise.
	* sysdeps/unix/sysv/linux/vfork.c: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/readelflib.c: Likewise.
2005-12-15 21:13:14 +00:00
Ulrich Drepper
a334319f65 (CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4. 2004-12-22 20:10:10 +00:00
Jakub Jelinek
0ecb606cb6 2.5-18.1 2007-07-12 18:26:36 +00:00
Ulrich Drepper
7c3164bc66 Update.
2004-06-17  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/pthread/pthread_cond_timedwait.c
	(__pthread_cond_timedwait): Also check for negativ nanoseconds.
	* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S
	(__pthread_cond_timedwait): Check for invalid nanosecond in
	timeout value.
	* sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: Likewise.
	* tst-cond19.c: New file.
	* Makefile: Add rules to build and run tst-cond19.
2004-06-18 04:29:42 +00:00
Ulrich Drepper
8e32efa63f Update.
2004-03-29  Alexandre Oliva  <aoliva@redhat.com>

	* sysdeps/unix/sysv/linux/sched_getaffinity.c: Prepend GLIBC_ to
	version names is SHLIB_COMPAT check.
	* sysdeps/unix/sysv/linux/sched_setaffinity.c: Likewise.
2004-03-29 22:04:09 +00:00
Andreas Jaeger
e4871eb8db Update.
2004-03-20  Andreas Jaeger  <aj@suse.de>

	* sysdeps/unix/sysv/linux/sched_getaffinity.c
	(__sched_getaffinity_old): Fix interface.
	* sysdeps/unix/sysv/linux/sched_setaffinity.c
	(__sched_setaffinity_old): Likewise.

	* sysdeps/unix/sysv/linux/sched_setaffinity.c: Include <alloca.h>.
2004-03-20 06:43:04 +00:00
Ulrich Drepper
439ff07be0 Update.
2004-03-18  Ulrich Drepper  <drepper@redhat.com>

	* posix/sched.h: Change sched_getaffinity and sched_setaffinity
	interfaces: add new second parameter.
	* sysdeps/generic/sched_getaffinity.c: Implement interface change.
	* sysdeps/generic/sched_setaffinity.c: Likewise.
	* sysdeps/unix/sysv/linux/sched_getaffinity.c: Likewise.  Add
	compatibility interface.
	* sysdeps/unix/sysv/linux/sched_setaffinity.c: Likewise.
	* sysdeps/unix/sysv/linux/Versions: Add versions for changed
	interfaces.
2004-03-19 00:14:42 +00:00
Ulrich Drepper
949ec76407 Update.
* posix/sched.h: Change prototypes of sched_getaffinity and
	sched_setaffinity.  Define CPU_SET, CPU_CLR, CPU_ISSET, and CPU_ZERO.
	* sysdeps/generic/sched_getaffinity.c: Adjust definition.
	* sysdeps/generic/sched_setaffinity.c: Likewise.
	* sysdeps/generic/bits/sched.h: Define __CPU_SETSIZE, __NCPUBITS,
	__CPUELT, __CPUMASK, cpu_set_t, __cpu_mask, __CPU_ZERO, __CPU_SET,
	__CPU_CLR, and __CPU_ISSET.
	* sysdeps/unix/sysv/linux/bits/sched.h: Likewise.
	* sysdeps/unix/sysv/linux/sched_getaffinity.c: New file.
	* sysdeps/unix/sysv/linux/sched_setaffinity.c: New file.

	* include/atomic.h (atomic_exchange_acq): Renamed from atomic_exchange.
	(atomic_exchange_rel): New #define.
	* sysdeps/ia64/bits/atomic.h: Likewise.
	* sysdeps/i386/i486/bits/atomic.h (atomic_exchange_acq): Renamed from
	atomic_exchange.
	* sysdeps/m68k/m68020/bits/atomic.h: Likewise.
	* sysdeps/powerpc/bits/atomic.h: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/bits/atomic.h: Likewise.
	* sysdeps/sparc/sparc64/bits/atomic.h: Likewise.
	* sysdeps/x86_64/bits/atomic.h: Likewise.
	* csu/tst-atomic.c: Use atomic_exchange_acq instead of atomic_exchange.
2003-05-10 05:36:37 +00:00