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c50e1c263e
glibc/sysdeps/nptl
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Adhemerval Zanella c50e1c263e x86: Remove arch-specific low level lock implementation 
This patch removes the arch-specific x86 assembly implementation for
low level locking and consolidate both 64 bits and 32 bits in a
single implementation.

Different than other architectures, x86 lll_trylock, lll_lock, and
lll_unlock implements a single-thread optimization to avoid atomic
operation, using cmpxchgl instead.  This patch implements by using
the new single-thread.h definitions in a generic way, although using
the previous semantic.

The lll_cond_trylock, lll_cond_lock, and lll_timedlock just use
atomic operations plus calls to lll_lock_wait*.

For __lll_lock_wait_private and __lll_lock_wait the generic implemtation
there is no indication that assembly implementation is required
performance-wise.

Checked on x86_64-linux-gnu and i686-linux-gnu.

	* sysdeps/nptl/lowlevellock.h (__lll_trylock): New macro.
	(lll_trylock): Call __lll_trylock.
	* sysdeps/unix/sysv/linux/i386/libc-lowlevellock.S: Remove file.
	* sysdeps/unix/sysv/linux/i386/lll_timedlock_wait.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/libc-lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lll_timedlock_wait.c: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/x86/lowlevellock.h: New file.
	* sysdeps/unix/sysv/linux/x86_64/cancellation.S: Include
	lowlevellock-futex.h.
2019-05-14 08:48:02 -03:00
..
bits Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
sys Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
aio_misc.h nptl: Cleanup cancellation macros 2019-01-03 18:38:16 -02:00
allocrtsig.c Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
dl-tunables.list Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
fork.c nptl: Remove pthread_clock_gettime pthread_clock_settime 2019-03-22 15:37:43 -03:00
fork.h nptl: Avoid fork handler lock for async-signal-safe fork [BZ #24161] 2019-02-08 12:46:19 +01:00
futex-internal.h Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
gai_misc.h nptl: Cleanup cancellation macros 2019-01-03 18:38:16 -02:00
Implies Get rid of nptl/sysdeps/pthread/ subdirectory 2014-06-12 13:48:47 -07:00
internaltypes.h Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
jmp-unwind.c Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
libc-lock.h Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
libc-lockP.h Assume LLL_LOCK_INITIALIZER is 0 2019-05-14 08:44:03 -03:00
librt-cancellation.c Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
lowlevellock-futex.h nptl: Assume __ASSUME_FUTEX_CLOCK_REALTIME support 2019-03-05 16:28:20 -03:00
lowlevellock.h x86: Remove arch-specific low level lock implementation 2019-05-14 08:48:02 -03:00
Makeconfig Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
Makefile Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
malloc-machine.h Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
proc_service.h Move remaining nptl_db headers to sysdeps/nptl 2019-02-16 08:25:16 +01:00
pthread-functions.h Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
pthread.h Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
setxid.h Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
shm-directory.h Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
stdio-lock.h Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
Subdirs Get rid of nptl/sysdeps/pthread/ subdirectory 2014-06-12 13:48:47 -07:00
tcb-offsets.h Get rid of nptl/sysdeps/pthread/ subdirectory 2014-06-12 13:48:47 -07:00
thread_db.h Move remaining nptl_db headers to sysdeps/nptl 2019-02-16 08:25:16 +01:00
threads.h Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
timer_routines.h Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
tst-mqueue8x.c Get rid of nptl/sysdeps/pthread/ subdirectory 2014-06-12 13:48:47 -07:00
unwind-forcedunwind.c Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00