| Age | Commit message (Collapse) | Author |
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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
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* 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.
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Since __ASSUME_PRIVATE_FUTEX is always defined, this patch removes the
!__ASSUME_PRIVATE_FUTEX paths.
Tested with build-many-glibcs.py.
* nptl/allocatestack.c (allocate_stack): Remove the
!__ASSUME_PRIVATE_FUTEX paths.
* nptl/descr.h (header): Remove the !__ASSUME_PRIVATE_FUTEX path.
* nptl/nptl-init.c (__pthread_initialize_minimal_internal):
Likewise.
* sysdeps/i386/nptl/tcb-offsets.sym (PRIVATE_FUTEX): Removed.
* sysdeps/powerpc/nptl/tcb-offsets.sym (PRIVATE_FUTEX): Likewise.
* sysdeps/sh/nptl/tcb-offsets.sym (PRIVATE_FUTEX): Likewise.
* sysdeps/x86_64/nptl/tcb-offsets.sym (PRIVATE_FUTEX): Likewise.
* sysdeps/i386/nptl/tls.h: (tcbhead_t): Remve the
!__ASSUME_PRIVATE_FUTEX path.
* sysdeps/s390/nptl/tls.h (tcbhead_t): Likewise.
* sysdeps/sparc/nptl/tls.h (tcbhead_t): Likewise.
* sysdeps/x86_64/nptl/tls.h (tcbhead_t): Likewise.
* sysdeps/unix/sysv/linux/i386/lowlevellock.S: Remove the
!__ASSUME_PRIVATE_FUTEX macros.
* sysdeps/unix/sysv/linux/lowlevellock-futex.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/cancellation.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Likewise.
* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_PRIVATE_FUTEX): Removed.
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* elf/dl-support.c [!THREAD_GSCOPE_IN_TCB] (_dl_thread_gscope_count):
Define variable.
* sysdeps/generic/ldsodefs.h [!THREAD_GSCOPE_IN_TCB] (struct
rtld_global): Add _dl_thread_gscope_count member.
* sysdeps/mach/hurd/tls.h: Include <atomic.h>.
[!defined __ASSEMBLER__] (THREAD_GSCOPE_GLOBAL, THREAD_GSCOPE_SET_FLAG,
THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_WAIT): Define macros.
* sysdeps/generic/tls.h: Document THREAD_GSCOPE_IN_TCB.
* sysdeps/aarch64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/alpha/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/arm/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/hppa/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/i386/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/ia64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/m68k/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/microblaze/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/mips/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/nios2/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/powerpc/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/riscv/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/s390/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/sh/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/sparc/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/tile/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/x86_64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
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* 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.
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This patch adds several new tunables to control the behavior of
elision on supported platforms[1]. Since elision now depends
on tunables, we should always *compile* with elision enabled,
and leave the code disabled, but available for runtime
selection. This gives us *much* better compile-time testing of
the existing code to avoid bit-rot[2].
Tested on ppc, ppc64, ppc64le, s390x and x86_64.
[1] This part of the patch was initially proposed by
Paul Murphy but was "staled" because the framework have changed
since the patch was originally proposed:
https://patchwork.sourceware.org/patch/10342/
[2] This part of the patch was inititally proposed as a RFC by
Carlos O'Donnell. Make sense to me integrate this on the patch:
https://sourceware.org/ml/libc-alpha/2017-05/msg00335.html
* elf/dl-tunables.list: Add elision parameters.
* manual/tunables.texi: Add entries about elision tunable.
* sysdeps/unix/sysv/linux/powerpc/elision-conf.c:
Add callback functions to dynamically enable/disable elision.
Add multiple callbacks functions to set elision parameters.
Deleted __libc_enable_secure check.
* sysdeps/unix/sysv/linux/s390/elision-conf.c: Likewise.
* sysdeps/unix/sysv/linux/x86/elision-conf.c: Likewise.
* configure: Regenerated.
* configure.ac: Option enable_lock_elision was deleted.
* config.h.in: ENABLE_LOCK_ELISION flag was deleted.
* config.make.in: Remove references to enable_lock_elision.
* manual/install.texi: Elision configure option was removed.
* INSTALL: Regenerated to remove enable_lock_elision.
* nptl/Makefile:
Disable elision so it can verify error case for destroying a mutex.
* sysdeps/powerpc/nptl/elide.h:
Cleanup ENABLE_LOCK_ELISION check.
Deleted macros for the case when ENABLE_LOCK_ELISION was not defined.
* sysdeps/s390/configure: Regenerated.
* sysdeps/s390/configure.ac: Remove references to enable_lock_elision..
* nptl/tst-mutex8.c:
Deleted all #ifndef ENABLE_LOCK_ELISION from the test.
* sysdeps/powerpc/powerpc32/sysdep.h:
Deleted all ENABLE_LOCK_ELISION checks.
* sysdeps/powerpc/powerpc64/sysdep.h: Likewise.
* sysdeps/powerpc/sysdep.h: Likewise.
* sysdeps/s390/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/force-elision.h: Likewise.
* sysdeps/unix/sysv/linux/s390/elision-conf.h: Likewise.
* sysdeps/unix/sysv/linux/s390/force-elision.h: Likewise.
* sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise.
* sysdeps/unix/sysv/linux/s390/Makefile: Remove references to
enable-lock-elision.
Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
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This patch adds two new internal defines to set the internal
pthread_mutex_t layout required by the supported ABIS:
1. __PTHREAD_MUTEX_NUSERS_AFTER_KIND which control whether to define
__nusers fields before or after __kind. The preferred value for
is 0 for new ports and it sets __nusers before __kind.
2. __PTHREAD_MUTEX_USE_UNION which control whether internal __spins and
__list members will be place inside an union for linuxthreads
compatibility. The preferred value is 0 for ports and it sets
to not use an union to define both fields.
It fixes the wrong offsets value for __kind value on x86_64-linux-gnu-x32.
Checked with a make check run-built-tests=no on all afected ABIs.
[BZ #22298]
* nptl/allocatestack.c (allocate_stack): Check if
__PTHREAD_MUTEX_HAVE_PREV is non-zero, instead if
__PTHREAD_MUTEX_HAVE_PREV is defined.
* nptl/descr.h (pthread): Likewise.
* nptl/nptl-init.c (__pthread_initialize_minimal_internal):
Likewise.
* nptl/pthread_create.c (START_THREAD_DEFN): Likewise.
* sysdeps/nptl/fork.c (__libc_fork): Likewise.
* sysdeps/nptl/pthread.h (PTHREAD_MUTEX_INITIALIZER): Likewise.
* sysdeps/nptl/bits/thread-shared-types.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): New
defines.
(__pthread_internal_list): Check __PTHREAD_MUTEX_USE_UNION instead
of __WORDSIZE for internal layout.
(__pthread_mutex_s): Check __PTHREAD_MUTEX_NUSERS_AFTER_KIND instead
of __WORDSIZE for internal __nusers layout and __PTHREAD_MUTEX_USE_UNION
instead of __WORDSIZE whether to use an union for __spins and __list
fields.
(__PTHREAD_MUTEX_HAVE_PREV): Define also for __PTHREAD_MUTEX_USE_UNION
case.
* sysdeps/aarch64/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): New
defines.
* sysdeps/alpha/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/arm/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/hppa/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/ia64/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/m68k/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/microblaze/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/mips/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/nios2/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/powerpc/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/s390/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/sh/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/sparc/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/tile/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/x86/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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This patch adds a new build test to check for internal fields
offsets for user visible internal field. Although currently
the only field which is statically initialized to a non zero value
is pthread_mutex_t.__data.__kind value, the tests also check the
offset of __kind, __spins, __elision (if supported), and __list
internal member. A internal header (pthread-offset.h) is added
to each major ABI with the reference value.
Checked on x86_64-linux-gnu and with a build check for all affected
ABIs (aarch64-linux-gnu, alpha-linux-gnu, arm-linux-gnueabihf,
hppa-linux-gnu, i686-linux-gnu, ia64-linux-gnu, m68k-linux-gnu,
microblaze-linux-gnu, mips64-linux-gnu, mips64-n32-linux-gnu,
mips-linux-gnu, powerpc64le-linux-gnu, powerpc-linux-gnu,
s390-linux-gnu, s390x-linux-gnu, sh4-linux-gnu, sparc64-linux-gnu,
sparcv9-linux-gnu, tilegx-linux-gnu, tilegx-linux-gnu-x32,
tilepro-linux-gnu, x86_64-linux-gnu, and x86_64-linux-x32).
* nptl/pthreadP.h (ASSERT_PTHREAD_STRING,
ASSERT_PTHREAD_INTERNAL_OFFSET): New macro.
* nptl/pthread_mutex_init.c (__pthread_mutex_init): Add build time
checks for internal pthread_mutex_t offsets.
* sysdeps/aarch64/nptl/pthread-offsets.h
(__PTHREAD_MUTEX_NUSERS_OFFSET, __PTHREAD_MUTEX_KIND_OFFSET,
__PTHREAD_MUTEX_SPINS_OFFSET, __PTHREAD_MUTEX_ELISION_OFFSET,
__PTHREAD_MUTEX_LIST_OFFSET): New macro.
* sysdeps/alpha/nptl/pthread-offsets.h: Likewise.
* sysdeps/arm/nptl/pthread-offsets.h: Likewise.
* sysdeps/hppa/nptl/pthread-offsets.h: Likewise.
* sysdeps/i386/nptl/pthread-offsets.h: Likewise.
* sysdeps/ia64/nptl/pthread-offsets.h: Likewise.
* sysdeps/m68k/nptl/pthread-offsets.h: Likewise.
* sysdeps/microblaze/nptl/pthread-offsets.h: Likewise.
* sysdeps/mips/nptl/pthread-offsets.h: Likewise.
* sysdeps/nios2/nptl/pthread-offsets.h: Likewise.
* sysdeps/powerpc/nptl/pthread-offsets.h: Likewise.
* sysdeps/s390/nptl/pthread-offsets.h: Likewise.
* sysdeps/sh/nptl/pthread-offsets.h: Likewise.
* sysdeps/sparc/nptl/pthread-offsets.h: Likewise.
* sysdeps/tile/nptl/pthread-offsets.h: Likewise.
* sysdeps/x86_64/nptl/pthread-offsets.h: Likewise.
Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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This patch removes the s390 specific implementation of spinlock code
and is now using the generic one.
ChangeLog:
* sysdeps/s390/nptl/pthread_spin_init.c: Delete File.
* sysdeps/s390/nptl/pthread_spin_lock.c: Likewise.
* sysdeps/s390/nptl/pthread_spin_trylock.c: Likewise.
* sysdeps/s390/nptl/pthread_spin_unlock.c: Likewise.
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This patch removes all the replicated pthread definition accross the
architectures and consolidates it on shared headers. The new
organization is as follow:
* Architecture specific definition (such as pthread types sizes) are
place in the new pthreadtypes-arch.h header in arch specific path.
* All shared structure definition are moved to a common NPTL header
at sysdeps/nptl/bits/pthreadtypes.h (with now includes the arch
specific one for internal definitions).
* Also, for C11 future thread support, both mutex and condition
definition are placed in a common header at
sysdeps/nptl/bits/thread-shared-types.h.
It is also a refactor patch without expected functional changes.
Checked with a build for all major ABI (aarch64-linux-gnu, alpha-linux-gnu,
arm-linux-gnueabi, i386-linux-gnu, ia64-linux-gnu,
m68k-linux-gnu, microblaze-linux-gnu, mips{64}-linux-gnu, nios2-linux-gnu,
powerpc{64le}-linux-gnu, s390{x}-linux-gnu, sparc{64}-linux-gnu,
tile{pro,gx}-linux-gnu, and x86_64-linux-gnu).
* posix/Makefile (headers): Add pthreadtypes-arch.h and
thread-shared-types.h.
* sysdeps/aarch64/nptl/bits/pthreadtypes-arch.h: New file: arch
specific thread definition.
* sysdeps/alpha/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/arm/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/hppa/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/ia64/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/m68k/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/microblaze/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/mips/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/nios2/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/powerpc/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/s390/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/sh/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/sparc/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/tile/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/x86/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/nptl/bits/thread-shared-types.h: New file: shared
thread definition between POSIX and C11.
* sysdeps/aarch64/nptl/bits/pthreadtypes.h.: Remove file.
* sysdeps/alpha/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/arm/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/hppa/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/m68k/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/microblaze/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/mips/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/nios2/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/ia64/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/powerpc/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/s390/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/sh/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/sparc/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/tile/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/x86/nptl/bits/pthreadtypes.h: Likewise.
* sysdeps/nptl/bits/pthreadtypes.h: New file: common thread
definitions shared across all architectures.
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This replaces the pthread rwlock with a new implementation that uses a
more scalable algorithm (primarily through not using a critical section
anymore to make state changes). The fast path for rdlock acquisition and
release is now basically a single atomic read-modify write or CAS and a few
branches. See nptl/pthread_rwlock_common.c for details.
* nptl/DESIGN-rwlock.txt: Remove.
* nptl/lowlevelrwlock.sym: Remove.
* nptl/Makefile: Add new tests.
* nptl/pthread_rwlock_common.c: New file. Contains the new rwlock.
* nptl/pthreadP.h (PTHREAD_RWLOCK_PREFER_READER_P): Remove.
(PTHREAD_RWLOCK_WRPHASE, PTHREAD_RWLOCK_WRLOCKED,
PTHREAD_RWLOCK_RWAITING, PTHREAD_RWLOCK_READER_SHIFT,
PTHREAD_RWLOCK_READER_OVERFLOW, PTHREAD_RWLOCK_WRHANDOVER,
PTHREAD_RWLOCK_FUTEX_USED): New.
* nptl/pthread_rwlock_init.c (__pthread_rwlock_init): Adapt to new
implementation.
* nptl/pthread_rwlock_rdlock.c (__pthread_rwlock_rdlock_slow): Remove.
(__pthread_rwlock_rdlock): Adapt.
* nptl/pthread_rwlock_timedrdlock.c
(pthread_rwlock_timedrdlock): Adapt.
* nptl/pthread_rwlock_timedwrlock.c
(pthread_rwlock_timedwrlock): Adapt.
* nptl/pthread_rwlock_trywrlock.c (pthread_rwlock_trywrlock): Adapt.
* nptl/pthread_rwlock_tryrdlock.c (pthread_rwlock_tryrdlock): Adapt.
* nptl/pthread_rwlock_unlock.c (pthread_rwlock_unlock): Adapt.
* nptl/pthread_rwlock_wrlock.c (__pthread_rwlock_wrlock_slow): Remove.
(__pthread_rwlock_wrlock): Adapt.
* nptl/tst-rwlock10.c: Adapt.
* nptl/tst-rwlock11.c: Adapt.
* nptl/tst-rwlock17.c: New file.
* nptl/tst-rwlock18.c: New file.
* nptl/tst-rwlock19.c: New file.
* nptl/tst-rwlock2b.c: New file.
* nptl/tst-rwlock8.c: Adapt.
* nptl/tst-rwlock9.c: Adapt.
* sysdeps/aarch64/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt.
* sysdeps/arm/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt.
* sysdeps/hppa/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt.
* sysdeps/ia64/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt.
* sysdeps/m68k/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt.
* sysdeps/microblaze/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt.
* sysdeps/mips/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt.
* sysdeps/nios2/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt.
* sysdeps/s390/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt.
* sysdeps/sh/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt.
* sysdeps/sparc/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt.
* sysdeps/tile/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt.
* sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h
(pthread_rwlock_t): Adapt.
* sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h
(pthread_rwlock_t): Adapt.
* sysdeps/x86/bits/pthreadtypes.h (pthread_rwlock_t): Adapt.
* nptl/nptl-printers.py (): Adapt.
* nptl/nptl_lock_constants.pysym: Adapt.
* nptl/test-rwlock-printers.py: Adapt.
* nptl/test-rwlockattr-printers.c: Adapt.
* nptl/test-rwlockattr-printers.py: Adapt.
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This is a new implementation for condition variables, required
after http://austingroupbugs.net/view.php?id=609 to fix bug 13165. In
essence, we need to be stricter in which waiters a signal or broadcast
is required to wake up; this couldn't be solved using the old algorithm.
ISO C++ made a similar clarification, so this also fixes a bug in
current libstdc++, for example.
We can't use the old algorithm anymore because futexes do not guarantee
to wake in FIFO order. Thus, when we wake, we can't simply let any
waiter grab a signal, but we need to ensure that one of the waiters
happening before the signal is woken up. This is something the previous
algorithm violated (see bug 13165).
There's another issue specific to condvars: ABA issues on the underlying
futexes. Unlike mutexes that have just three states, or semaphores that
have no tokens or a limited number of them, the state of a condvar is
the *order* of the waiters. A waiter on a semaphore can grab a token
whenever one is available; a condvar waiter must only consume a signal
if it is eligible to do so as determined by the relative order of the
waiter and the signal.
Therefore, this new algorithm maintains two groups of waiters: Those
eligible to consume signals (G1), and those that have to wait until
previous waiters have consumed signals (G2). Once G1 is empty, G2
becomes the new G1. 64b counters are used to avoid ABA issues.
This condvar doesn't yet use a requeue optimization (ie, on a broadcast,
waking just one thread and requeueing all others on the futex of the
mutex supplied by the program). I don't think doing the requeue is
necessarily the right approach (but I haven't done real measurements
yet):
* If a program expects to wake many threads at the same time and make
that scalable, a condvar isn't great anyway because of how it requires
waiters to operate mutually exclusive (due to the mutex usage). Thus, a
thundering herd problem is a scalability problem with or without the
optimization. Using something like a semaphore might be more
appropriate in such a case.
* The scalability problem is actually at the mutex side; the condvar
could help (and it tries to with the requeue optimization), but it
should be the mutex who decides how that is done, and whether it is done
at all.
* Forcing all but one waiter into the kernel-side wait queue of the
mutex prevents/avoids the use of lock elision on the mutex. Thus, it
prevents the only cure against the underlying scalability problem
inherent to condvars.
* If condvars use short critical sections (ie, hold the mutex just to
check a binary flag or such), which they should do ideally, then forcing
all those waiter to proceed serially with kernel-based hand-off (ie,
futex ops in the mutex' contended state, via the futex wait queues) will
be less efficient than just letting a scalable mutex implementation take
care of it. Our current mutex impl doesn't employ spinning at all, but
if critical sections are short, spinning can be much better.
* Doing the requeue stuff requires all waiters to always drive the mutex
into the contended state. This leads to each waiter having to call
futex_wake after lock release, even if this wouldn't be necessary.
[BZ #13165]
* nptl/pthread_cond_broadcast.c (__pthread_cond_broadcast): Rewrite to
use new algorithm.
* nptl/pthread_cond_destroy.c (__pthread_cond_destroy): Likewise.
* nptl/pthread_cond_init.c (__pthread_cond_init): Likewise.
* nptl/pthread_cond_signal.c (__pthread_cond_signal): Likewise.
* nptl/pthread_cond_wait.c (__pthread_cond_wait): Likewise.
(__pthread_cond_timedwait): Move here from pthread_cond_timedwait.c.
(__condvar_confirm_wakeup, __condvar_cancel_waiting,
__condvar_cleanup_waiting, __condvar_dec_grefs,
__pthread_cond_wait_common): New.
(__condvar_cleanup): Remove.
* npt/pthread_condattr_getclock.c (pthread_condattr_getclock): Adapt.
* npt/pthread_condattr_setclock.c (pthread_condattr_setclock):
Likewise.
* npt/pthread_condattr_getpshared.c (pthread_condattr_getpshared):
Likewise.
* npt/pthread_condattr_init.c (pthread_condattr_init): Likewise.
* nptl/tst-cond1.c: Add comment.
* nptl/tst-cond20.c (do_test): Adapt.
* nptl/tst-cond22.c (do_test): Likewise.
* sysdeps/aarch64/nptl/bits/pthreadtypes.h (pthread_cond_t): Adapt
structure.
* sysdeps/arm/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/ia64/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/m68k/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/microblaze/nptl/bits/pthreadtypes.h (pthread_cond_t):
Likewise.
* sysdeps/mips/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/nios2/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/s390/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/sh/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/tile/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h (pthread_cond_t):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h (pthread_cond_t):
Likewise.
* sysdeps/x86/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/nptl/internaltypes.h (COND_NWAITERS_SHIFT): Remove.
(COND_CLOCK_BITS): Adapt.
* sysdeps/nptl/pthread.h (PTHREAD_COND_INITIALIZER): Adapt.
* nptl/pthreadP.h (__PTHREAD_COND_CLOCK_MONOTONIC_MASK,
__PTHREAD_COND_SHARED_MASK): New.
* nptl/nptl-printers.py (CLOCK_IDS): Remove.
(ConditionVariablePrinter, ConditionVariableAttributesPrinter): Adapt.
* nptl/nptl_lock_constants.pysym: Adapt.
* nptl/test-cond-printers.py: Adapt.
* sysdeps/unix/sysv/linux/hppa/internaltypes.h (cond_compat_clear,
cond_compat_check_and_clear): Adapt.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_timedwait.c: Remove file ...
* sysdeps/unix/sysv/linux/hppa/pthread_cond_wait.c
(__pthread_cond_timedwait): ... and move here.
* nptl/DESIGN-condvar.txt: Remove file.
* nptl/lowlevelcond.sym: Likewise.
* nptl/pthread_cond_timedwait.c: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i586/pthread_cond_broadcast.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i586/pthread_cond_signal.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i586/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i586/pthread_cond_wait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i686/pthread_cond_broadcast.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i686/pthread_cond_signal.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i686/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i686/pthread_cond_wait.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_broadcast.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise.
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This patch remove the PID cache and usage in current GLIBC code. Current
usage is mainly used a performance optimization to avoid the syscall,
however it adds some issues:
- The exposed clone syscall will try to set pid/tid to make the new
thread somewhat compatible with current GLIBC assumptions. This cause
a set of issue with new workloads and usecases (such as BZ#17214 and
[1]) as well for new internal usage of clone to optimize other algorithms
(such as clone plus CLONE_VM for posix_spawn, BZ#19957).
- The caching complexity also added some bugs in the past [2] [3] and
requires more effort of each port to handle such requirements (for
both clone and vfork implementation).
- Caching performance gain in mainly on getpid and some specific
code paths. The getpid performance leverage is questionable [4],
either by the idea of getpid being a hotspot as for the getpid
implementation itself (if it is indeed a justifiable hotspot a
vDSO symbol could let to a much more simpler solution).
Other usage is mainly for non usual code paths, such as pthread
cancellation signal and handling.
For thread creation (on stack allocation) the code simplification in fact
adds some performance gain due the no need of transverse the stack cache
and invalidate each element pid.
Other thread usages will require a direct getpid syscall, such as
cancellation/setxid signal, thread cancellation, thread fail path (at
create_thread), and thread signal (pthread_kill and pthread_sigqueue).
However these are hardly usual hotspots and I think adding a syscall is
justifiable.
It also simplifies both the clone and vfork arch-specific implementation.
And by review each fork implementation there are some discrepancies that
this patch also solves:
- microblaze clone/vfork does not set/reset the pid/tid field
- hppa uses the default vfork implementation that fallback to fork.
Since vfork is deprecated I do not think we should bother with it.
The patch also removes the TID caching in clone. My understanding for
such semantic is try provide some pthread usage after a user program
issue clone directly (as done by thread creation with CLONE_PARENT_SETTID
and pthread tid member). However, as stated before in multiple discussions
threads, GLIBC provides clone syscalls without further supporting all this
semantics.
I ran a full make check on x86_64, x32, i686, armhf, aarch64, and powerpc64le.
For sparc32, sparc64, and mips I ran the basic fork and vfork tests from
posix/ folder (on a qemu system). So it would require further testing
on alpha, hppa, ia64, m68k, nios2, s390, sh, and tile (I excluded microblaze
because it is already implementing the patch semantic regarding clone/vfork).
[1] https://codereview.chromium.org/800183004/
[2] https://sourceware.org/ml/libc-alpha/2006-07/msg00123.html
[3] https://sourceware.org/bugzilla/show_bug.cgi?id=15368
[4] http://yarchive.net/comp/linux/getpid_caching.html
* sysdeps/nptl/fork.c (__libc_fork): Remove pid cache setting.
* nptl/allocatestack.c (allocate_stack): Likewise.
(__reclaim_stacks): Likewise.
(setxid_signal_thread): Obtain pid through syscall.
* nptl/nptl-init.c (sigcancel_handler): Likewise.
(sighandle_setxid): Likewise.
* nptl/pthread_cancel.c (pthread_cancel): Likewise.
* sysdeps/unix/sysv/linux/pthread_kill.c (__pthread_kill): Likewise.
* sysdeps/unix/sysv/linux/pthread_sigqueue.c (pthread_sigqueue):
Likewise.
* sysdeps/unix/sysv/linux/createthread.c (create_thread): Likewise.
* sysdeps/unix/sysv/linux/getpid.c: Remove file.
* nptl/descr.h (struct pthread): Change comment about pid value.
* nptl/pthread_getattr_np.c (pthread_getattr_np): Remove thread
pid assert.
* sysdeps/unix/sysv/linux/pthread-pids.h (__pthread_initialize_pids):
Do not set pid value.
* nptl_db/td_ta_thr_iter.c (iterate_thread_list): Remove thread
pid cache check.
* nptl_db/td_thr_validate.c (td_thr_validate): Likewise.
* sysdeps/aarch64/nptl/tcb-offsets.sym: Remove pid offset.
* sysdeps/alpha/nptl/tcb-offsets.sym: Likewise.
* sysdeps/arm/nptl/tcb-offsets.sym: Likewise.
* sysdeps/hppa/nptl/tcb-offsets.sym: Likewise.
* sysdeps/i386/nptl/tcb-offsets.sym: Likewise.
* sysdeps/ia64/nptl/tcb-offsets.sym: Likewise.
* sysdeps/m68k/nptl/tcb-offsets.sym: Likewise.
* sysdeps/microblaze/nptl/tcb-offsets.sym: Likewise.
* sysdeps/mips/nptl/tcb-offsets.sym: Likewise.
* sysdeps/nios2/nptl/tcb-offsets.sym: Likewise.
* sysdeps/powerpc/nptl/tcb-offsets.sym: Likewise.
* sysdeps/s390/nptl/tcb-offsets.sym: Likewise.
* sysdeps/sh/nptl/tcb-offsets.sym: Likewise.
* sysdeps/sparc/nptl/tcb-offsets.sym: Likewise.
* sysdeps/tile/nptl/tcb-offsets.sym: Likewise.
* sysdeps/x86_64/nptl/tcb-offsets.sym: Likewise.
* sysdeps/unix/sysv/linux/aarch64/clone.S: Remove pid and tid caching.
* sysdeps/unix/sysv/linux/alpha/clone.S: Likewise.
* sysdeps/unix/sysv/linux/arm/clone.S: Likewise.
* sysdeps/unix/sysv/linux/hppa/clone.S: Likewise.
* sysdeps/unix/sysv/linux/i386/clone.S: Likewise.
* sysdeps/unix/sysv/linux/ia64/clone2.S: Likewise.
* sysdeps/unix/sysv/linux/mips/clone.S: Likewise.
* sysdeps/unix/sysv/linux/nios2/clone.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/clone.S: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/clone.S: Likewise.
* sysdeps/unix/sysv/linux/sh/clone.S: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/clone.S: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S: Likewise.
* sysdeps/unix/sysv/linux/tile/clone.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/clone.S: Likewise.
* sysdeps/unix/sysv/linux/aarch64/vfork.S: Remove pid set and reset.
* sysdeps/unix/sysv/linux/alpha/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/arm/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/i386/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/ia64/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/m68k/clone.S: Likewise.
* sysdeps/unix/sysv/linux/m68k/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/mips/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/nios2/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/sh/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/tile/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/tst-clone2.c (f): Remove direct pthread
struct access.
(clone_test): Remove function.
(do_test): Rewrite to take in consideration pid is not cached anymore.
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Nothing depends on the PTW macro anymore, so the mechanism to define
PTW for recompliations of libc routines is no longer needed. The
source files are still recompiled for the nptl directory, just without
the “ptw-” prefix.
(Reducing the number of pattern rules in sysd-rules is critical for
improving make performance.)
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With this change, we no longer add sysdep.o and similar objects which
are present in libc.a to other static libraries.
|
|
Identical definitions of dtv_t and TLS_DTV_UNALLOCATED were
repeated for all architectures using DTVs.
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Preparation for gcc -fsplit-stack support (gcc bug #68191). The new
field is basically identical to the one on x86. Its TCB offset needs
to be constant, as it'll be hardcoded in gcc.
ChangeLog:
* sysdeps/s390/nptl/tls.h (struct tcbhead_t): Add __private_ss field.
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* sysdeps/s390/fpu/bits/mathinline.h:
Use __asm__ [__volatile__] instead of asm [volatile].
* sysdeps/s390/abort-instr.h: Likewise.
* sysdeps/s390/atomic-machine.h: Likewise.
* sysdeps/s390/bits/string.h: Likewise.
* sysdeps/s390/dl-tls.h: Likewise.
* sysdeps/s390/fpu/e_sqrt.c: Likewise.
* sysdeps/s390/fpu/e_sqrtf.c: Likewise.
* sysdeps/s390/fpu/e_sqrtl.c: Likewise.
* sysdeps/s390/fpu/fesetround.c: Likewise.
* sysdeps/s390/fpu/fpu_control.h: Likewise.
* sysdeps/s390/fpu/s_fma.c: Likewise.
* sysdeps/s390/fpu/s_fmaf.c: Likewise.
* sysdeps/s390/memusage.h: Likewise.
* sysdeps/s390/multiarch/ifunc-resolve.h: Likewise.
* sysdeps/s390/nptl/pthread_spin_lock.c: Likewise.
* sysdeps/s390/nptl/pthread_spin_trylock.c: Likewise.
* sysdeps/s390/nptl/pthread_spin_unlock.c: Likewise.
* sysdeps/s390/nptl/tls.h: Likewise.
* sysdeps/s390/s390-32/__longjmp.c: Likewise.
* sysdeps/s390/s390-32/backtrace.c: Likewise.
* sysdeps/s390/s390-32/dl-machine.h: Likewise.
* sysdeps/s390/s390-32/multiarch/memcmp.c: Likewise.
* sysdeps/s390/s390-32/stackguard-macros.h: Likewise.
* sysdeps/s390/s390-32/tls-macros.h: Likewise.
* sysdeps/s390/s390-64/__longjmp.c: Likewise.
* sysdeps/s390/s390-64/backtrace.c: Likewise.
* sysdeps/s390/s390-64/dl-machine.h: Likewise.
* sysdeps/s390/s390-64/iso-8859-1_cp037_z900.c: Likewise.
* sysdeps/s390/s390-64/multiarch/memcmp.c: Likewise.
* sysdeps/s390/s390-64/stackguard-macros.h: Likewise.
* sysdeps/s390/s390-64/tls-macros.h: Likewise.
* sysdeps/s390/s390-64/utf16-utf32-z9.c: Likewise.
* sysdeps/s390/s390-64/utf8-utf16-z9.c: Likewise.
* sysdeps/s390/s390-64/utf8-utf32-z9.c: Likewise.
* sysdeps/unix/sysv/linux/s390/brk.c: Likewise.
* sysdeps/unix/sysv/linux/s390/elision-trylock.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/____longjmp_chk.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/____longjmp_chk.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/s390/sysconf.c: Likewise.
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This mostly automatically-generated patch converts 231 sysdeps
function definitions in glibc from old-style K&R to prototype-style.
For __aio_sigqueue and __gai_sigqueue I had to add internal_function
to the definitions as noted by Florian in
<https://sourceware.org/ml/libc-alpha/2015-10/msg00595.html> to keep
the functions compiling on x86 after conversion to prototype
definitions. Otherwise, the patch is automatically generated with all
the same exclusions and caveats as in
<https://sourceware.org/ml/libc-alpha/2015-10/msg00594.html> except
that it's a patch for sysdeps files.
Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch). Also tested for arm,
mips64 and powerpc32 that installed stripped shared libraries are
unchanged by the patch.
* sysdeps/arm/backtrace.c (__backtrace): Convert to
prototype-style function definition.
* sysdeps/i386/backtrace.c (__backtrace): Likewise.
* sysdeps/i386/ffs.c (__ffs): Likewise.
* sysdeps/i386/i686/ffs.c (__ffs): Likewise.
* sysdeps/ia64/nptl/pthread_spin_lock.c (pthread_spin_lock):
Likewise.
* sysdeps/ia64/nptl/pthread_spin_trylock.c (pthread_spin_trylock):
Likewise.
* sysdeps/ieee754/ldbl-128/e_log2l.c (__ieee754_log2l): Likewise.
* sysdeps/ieee754/ldbl-128ibm/e_log2l.c (__ieee754_log2l):
Likewise.
* sysdeps/m68k/ffs.c (__ffs): Likewise.
* sysdeps/m68k/m680x0/fpu/e_acos.c (FUNC): Likewise.
* sysdeps/m68k/m680x0/fpu/e_fmod.c (FUNC): Likewise.
* sysdeps/mach/adjtime.c (__adjtime): Likewise.
* sysdeps/mach/gettimeofday.c (__gettimeofday): Likewise.
* sysdeps/mach/hurd/_exit.c (_exit): Likewise.
* sysdeps/mach/hurd/access.c (__access): Likewise.
* sysdeps/mach/hurd/adjtime.c (__adjtime): Likewise.
* sysdeps/mach/hurd/chdir.c (__chdir): Likewise.
* sysdeps/mach/hurd/chmod.c (__chmod): Likewise.
* sysdeps/mach/hurd/chown.c (__chown): Likewise.
* sysdeps/mach/hurd/cthreads.c (cthread_keycreate): Likewise.
(cthread_getspecific): Likewise.
(cthread_setspecific): Likewise.
(__libc_getspecific): Likewise.
* sysdeps/mach/hurd/euidaccess.c (__euidaccess): Likewise.
* sysdeps/mach/hurd/faccessat.c (faccessat): Likewise.
* sysdeps/mach/hurd/fchdir.c (__fchdir): Likewise.
* sysdeps/mach/hurd/fchmod.c (__fchmod): Likewise.
* sysdeps/mach/hurd/fchmodat.c (fchmodat): Likewise.
* sysdeps/mach/hurd/fchown.c (__fchown): Likewise.
* sysdeps/mach/hurd/fchownat.c (fchownat): Likewise.
* sysdeps/mach/hurd/flock.c (__flock): Likewise.
* sysdeps/mach/hurd/fsync.c (fsync): Likewise.
* sysdeps/mach/hurd/ftruncate.c (__ftruncate): Likewise.
* sysdeps/mach/hurd/getgroups.c (__getgroups): Likewise.
* sysdeps/mach/hurd/gethostname.c (__gethostname): Likewise.
* sysdeps/mach/hurd/getitimer.c (__getitimer): Likewise.
* sysdeps/mach/hurd/getlogin_r.c (__getlogin_r): Likewise.
* sysdeps/mach/hurd/getpgid.c (__getpgid): Likewise.
* sysdeps/mach/hurd/getrusage.c (__getrusage): Likewise.
* sysdeps/mach/hurd/getsockname.c (__getsockname): Likewise.
* sysdeps/mach/hurd/group_member.c (__group_member): Likewise.
* sysdeps/mach/hurd/isatty.c (__isatty): Likewise.
* sysdeps/mach/hurd/lchown.c (__lchown): Likewise.
* sysdeps/mach/hurd/link.c (__link): Likewise.
* sysdeps/mach/hurd/linkat.c (linkat): Likewise.
* sysdeps/mach/hurd/listen.c (__listen): Likewise.
* sysdeps/mach/hurd/mkdir.c (__mkdir): Likewise.
* sysdeps/mach/hurd/mkdirat.c (mkdirat): Likewise.
* sysdeps/mach/hurd/openat.c (__openat): Likewise.
* sysdeps/mach/hurd/poll.c (__poll): Likewise.
* sysdeps/mach/hurd/readlink.c (__readlink): Likewise.
* sysdeps/mach/hurd/readlinkat.c (readlinkat): Likewise.
* sysdeps/mach/hurd/recv.c (__recv): Likewise.
* sysdeps/mach/hurd/rename.c (rename): Likewise.
* sysdeps/mach/hurd/renameat.c (renameat): Likewise.
* sysdeps/mach/hurd/revoke.c (revoke): Likewise.
* sysdeps/mach/hurd/rewinddir.c (__rewinddir): Likewise.
* sysdeps/mach/hurd/rmdir.c (__rmdir): Likewise.
* sysdeps/mach/hurd/seekdir.c (seekdir): Likewise.
* sysdeps/mach/hurd/send.c (__send): Likewise.
* sysdeps/mach/hurd/setdomain.c (setdomainname): Likewise.
* sysdeps/mach/hurd/setegid.c (setegid): Likewise.
* sysdeps/mach/hurd/seteuid.c (seteuid): Likewise.
* sysdeps/mach/hurd/setgid.c (__setgid): Likewise.
* sysdeps/mach/hurd/setgroups.c (setgroups): Likewise.
* sysdeps/mach/hurd/sethostid.c (sethostid): Likewise.
* sysdeps/mach/hurd/sethostname.c (sethostname): Likewise.
* sysdeps/mach/hurd/setlogin.c (setlogin): Likewise.
* sysdeps/mach/hurd/setpgid.c (__setpgid): Likewise.
* sysdeps/mach/hurd/setregid.c (__setregid): Likewise.
* sysdeps/mach/hurd/setreuid.c (__setreuid): Likewise.
* sysdeps/mach/hurd/settimeofday.c (__settimeofday): Likewise.
* sysdeps/mach/hurd/setuid.c (__setuid): Likewise.
* sysdeps/mach/hurd/shutdown.c (shutdown): Likewise.
* sysdeps/mach/hurd/sigaction.c (__sigaction): Likewise.
* sysdeps/mach/hurd/sigaltstack.c (__sigaltstack): Likewise.
* sysdeps/mach/hurd/sigpending.c (sigpending): Likewise.
* sysdeps/mach/hurd/sigprocmask.c (__sigprocmask): Likewise.
* sysdeps/mach/hurd/sigsuspend.c (__sigsuspend): Likewise.
* sysdeps/mach/hurd/socket.c (__socket): Likewise.
* sysdeps/mach/hurd/symlink.c (__symlink): Likewise.
* sysdeps/mach/hurd/symlinkat.c (symlinkat): Likewise.
* sysdeps/mach/hurd/telldir.c (telldir): Likewise.
* sysdeps/mach/hurd/truncate.c (__truncate): Likewise.
* sysdeps/mach/hurd/umask.c (__umask): Likewise.
* sysdeps/mach/hurd/unlink.c (__unlink): Likewise.
* sysdeps/mach/hurd/unlinkat.c (unlinkat): Likewise.
* sysdeps/mips/mips64/__longjmp.c (__longjmp): Likewise.
* sysdeps/posix/alarm.c (alarm): Likewise.
* sysdeps/posix/cuserid.c (cuserid): Likewise.
* sysdeps/posix/dirfd.c (dirfd): Likewise.
* sysdeps/posix/dup.c (__dup): Likewise.
* sysdeps/posix/dup2.c (__dup2): Likewise.
* sysdeps/posix/euidaccess.c (euidaccess): Likewise.
(main): Likewise.
* sysdeps/posix/flock.c (__flock): Likewise.
* sysdeps/posix/fpathconf.c (__fpathconf): Likewise.
* sysdeps/posix/getcwd.c (__getcwd): Likewise.
* sysdeps/posix/gethostname.c (__gethostname): Likewise.
* sysdeps/posix/gettimeofday.c (__gettimeofday): Likewise.
* sysdeps/posix/isatty.c (__isatty): Likewise.
* sysdeps/posix/killpg.c (killpg): Likewise.
* sysdeps/posix/libc_fatal.c (__libc_fatal): Likewise.
* sysdeps/posix/mkfifoat.c (mkfifoat): Likewise.
* sysdeps/posix/raise.c (raise): Likewise.
* sysdeps/posix/remove.c (remove): Likewise.
* sysdeps/posix/rename.c (rename): Likewise.
* sysdeps/posix/rewinddir.c (__rewinddir): Likewise.
* sysdeps/posix/seekdir.c (seekdir): Likewise.
* sysdeps/posix/sigblock.c (__sigblock): Likewise.
* sysdeps/posix/sigignore.c (sigignore): Likewise.
* sysdeps/posix/sigintr.c (siginterrupt): Likewise.
* sysdeps/posix/signal.c (__bsd_signal): Likewise.
* sysdeps/posix/sigset.c (sigset): Likewise.
* sysdeps/posix/sigsuspend.c (__sigsuspend): Likewise.
* sysdeps/posix/sysconf.c (__sysconf): Likewise.
* sysdeps/posix/sysv_signal.c (__sysv_signal): Likewise.
* sysdeps/posix/time.c (time): Likewise.
* sysdeps/posix/ttyname.c (getttyname): Likewise.
(ttyname): Likewise.
* sysdeps/posix/ttyname_r.c (__ttyname_r): Likewise.
* sysdeps/posix/utime.c (utime): Likewise.
* sysdeps/powerpc/fpu/s_isnan.c (__isnan): Likewise.
* sysdeps/powerpc/nptl/pthread_spin_lock.c (pthread_spin_lock):
Likewise.
* sysdeps/powerpc/nptl/pthread_spin_trylock.c
(pthread_spin_trylock): Likewise.
* sysdeps/pthread/aio_error.c (aio_error): Likewise.
* sysdeps/pthread/aio_read.c (aio_read): Likewise.
* sysdeps/pthread/aio_read64.c (aio_read64): Likewise.
* sysdeps/pthread/aio_write.c (aio_write): Likewise.
* sysdeps/pthread/aio_write64.c (aio_write64): Likewise.
* sysdeps/pthread/flockfile.c (__flockfile): Likewise.
* sysdeps/pthread/ftrylockfile.c (__ftrylockfile): Likewise.
* sysdeps/pthread/funlockfile.c (__funlockfile): Likewise.
* sysdeps/pthread/timer_create.c (timer_create): Likewise.
* sysdeps/pthread/timer_getoverr.c (timer_getoverrun): Likewise.
* sysdeps/pthread/timer_gettime.c (timer_gettime): Likewise.
* sysdeps/s390/ffs.c (__ffs): Likewise.
* sysdeps/s390/nptl/pthread_spin_lock.c (pthread_spin_lock):
Likewise.
* sysdeps/s390/nptl/pthread_spin_trylock.c (pthread_spin_trylock):
Likewise.
* sysdeps/sh/nptl/pthread_spin_lock.c (pthread_spin_lock):
Likewise.
* sysdeps/sparc/nptl/pthread_barrier_destroy.c
(pthread_barrier_destroy): Likewise.
* sysdeps/sparc/nptl/pthread_barrier_wait.c
(__pthread_barrier_wait): Likewise.
* sysdeps/sparc/sparc32/e_sqrt.c (__ieee754_sqrt): Likewise.
* sysdeps/sparc/sparc32/pthread_barrier_wait.c
(__pthread_barrier_wait): Likewise.
* sysdeps/sparc/sparc32/sem_init.c (__old_sem_init): Likewise.
* sysdeps/tile/memcmp.c (memcmp_common_alignment): Likewise.
(memcmp_not_common_alignment): Likewise.
(MEMCMP): Likewise.
* sysdeps/tile/wordcopy.c (_wordcopy_fwd_aligned): Likewise.
(_wordcopy_fwd_dest_aligned): Likewise.
(_wordcopy_bwd_aligned): Likewise.
(_wordcopy_bwd_dest_aligned): Likewise.
* sysdeps/unix/bsd/ftime.c (ftime): Likewise.
* sysdeps/unix/bsd/gtty.c (gtty): Likewise.
* sysdeps/unix/bsd/stty.c (stty): Likewise.
* sysdeps/unix/bsd/tcflow.c (tcflow): Likewise.
* sysdeps/unix/bsd/tcflush.c (tcflush): Likewise.
* sysdeps/unix/bsd/tcgetattr.c (__tcgetattr): Likewise.
* sysdeps/unix/bsd/tcgetpgrp.c (tcgetpgrp): Likewise.
* sysdeps/unix/bsd/tcsendbrk.c (tcsendbreak): Likewise.
* sysdeps/unix/bsd/tcsetattr.c (tcsetattr): Likewise.
* sysdeps/unix/bsd/tcsetpgrp.c (tcsetpgrp): Likewise.
* sysdeps/unix/bsd/ualarm.c (ualarm): Likewise.
* sysdeps/unix/bsd/wait3.c (__wait3): Likewise.
* sysdeps/unix/getlogin_r.c (__getlogin_r): Likewise.
* sysdeps/unix/sockatmark.c (sockatmark): Likewise.
* sysdeps/unix/stime.c (stime): Likewise.
* sysdeps/unix/sysv/linux/_exit.c (_exit): Likewise.
* sysdeps/unix/sysv/linux/aio_sigqueue.c (__aio_sigqueue):
Likewise. Use internal_function.
* sysdeps/unix/sysv/linux/arm/sigaction.c (__libc_sigaction):
Convert to prototype-style function definition.
* sysdeps/unix/sysv/linux/faccessat.c (faccessat): Likewise.
* sysdeps/unix/sysv/linux/fchmodat.c (fchmodat): Likewise.
* sysdeps/unix/sysv/linux/fpathconf.c (__fpathconf): Likewise.
* sysdeps/unix/sysv/linux/gai_sigqueue.c (__gai_sigqueue):
Likewise. Use internal_function.
* sysdeps/unix/sysv/linux/gethostid.c (sethostid): Convert to
prototype-style function definition
* sysdeps/unix/sysv/linux/getlogin_r.c (__getlogin_r_loginuid):
Likewise.
(__getlogin_r): Likewise.
* sysdeps/unix/sysv/linux/getpt.c (__posix_openpt): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_broadcast.c
(__pthread_cond_broadcast): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_destroy.c
(__pthread_cond_destroy): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_init.c
(__pthread_cond_init): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_signal.c
(__pthread_cond_signal): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_wait.c
(__pthread_cond_wait): Likewise.
* sysdeps/unix/sysv/linux/i386/getmsg.c (getmsg): Likewise.
* sysdeps/unix/sysv/linux/i386/setegid.c (setegid): Likewise.
* sysdeps/unix/sysv/linux/ia64/sigaction.c (__libc_sigaction):
Likewise.
* sysdeps/unix/sysv/linux/ia64/sigpending.c (sigpending):
Likewise.
* sysdeps/unix/sysv/linux/ia64/sigprocmask.c (__sigprocmask):
Likewise.
* sysdeps/unix/sysv/linux/mips/sigaction.c (__libc_sigaction):
Likewise.
* sysdeps/unix/sysv/linux/msgget.c (msgget): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c
(__ftruncate64): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c
(truncate64): Likewise.
* sysdeps/unix/sysv/linux/pt-raise.c (raise): Likewise.
* sysdeps/unix/sysv/linux/pthread_getcpuclockid.c
(pthread_getcpuclockid): Likewise.
* sysdeps/unix/sysv/linux/pthread_getname.c (pthread_getname_np):
Likewise.
* sysdeps/unix/sysv/linux/pthread_setname.c (pthread_setname_np):
Likewise.
* sysdeps/unix/sysv/linux/pthread_sigmask.c (pthread_sigmask):
Likewise.
* sysdeps/unix/sysv/linux/pthread_sigqueue.c (pthread_sigqueue):
Likewise.
* sysdeps/unix/sysv/linux/raise.c (raise): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sigaction.c
(__libc_sigaction): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sigpending.c (sigpending):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sigprocmask.c
(__sigprocmask): Likewise.
* sysdeps/unix/sysv/linux/semget.c (semget): Likewise.
* sysdeps/unix/sysv/linux/semop.c (semop): Likewise.
* sysdeps/unix/sysv/linux/setrlimit64.c (setrlimit64): Likewise.
* sysdeps/unix/sysv/linux/shmat.c (shmat): Likewise.
* sysdeps/unix/sysv/linux/shmdt.c (shmdt): Likewise.
* sysdeps/unix/sysv/linux/shmget.c (shmget): Likewise.
* sysdeps/unix/sysv/linux/sigaction.c (__libc_sigaction):
Likewise.
* sysdeps/unix/sysv/linux/sigpending.c (sigpending): Likewise.
* sysdeps/unix/sysv/linux/sigprocmask.c (__sigprocmask): Likewise.
* sysdeps/unix/sysv/linux/sigqueue.c (__sigqueue): Likewise.
* sysdeps/unix/sysv/linux/sigstack.c (sigstack): Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigpending.c (sigpending):
Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigprocmask.c
(__sigprocmask): Likewise.
* sysdeps/unix/sysv/linux/speed.c (cfgetospeed): Likewise.
(cfgetispeed): Likewise.
(cfsetospeed): Likewise.
(cfsetispeed): Likewise.
* sysdeps/unix/sysv/linux/tcflow.c (tcflow): Likewise.
* sysdeps/unix/sysv/linux/tcflush.c (tcflush): Likewise.
* sysdeps/unix/sysv/linux/tcgetattr.c (__tcgetattr): Likewise.
* sysdeps/unix/sysv/linux/tcsetattr.c (tcsetattr): Likewise.
* sysdeps/unix/sysv/linux/time.c (time): Likewise.
* sysdeps/unix/sysv/linux/timer_create.c (timer_create): Likewise.
* sysdeps/unix/sysv/linux/timer_delete.c (timer_delete): Likewise.
* sysdeps/unix/sysv/linux/timer_getoverr.c (timer_getoverrun):
Likewise.
* sysdeps/unix/sysv/linux/timer_gettime.c (timer_gettime):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/sigpending.c (sigpending):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/sigprocmask.c (__sigprocmask):
Likewise.
* sysdeps/x86_64/backtrace.c (__backtrace): Likewise.
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