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| author | Torvald Riegel <triegel@redhat.com> | 2015-06-23 15:22:25 +0200 |
|---|---|---|
| committer | Torvald Riegel <triegel@redhat.com> | 2015-06-30 15:57:15 +0200 |
| commit | 4eb984d3ab5641ce7992204756ac15a61f5f7181 (patch) | |
| tree | 12603bae9d2582033a3186174d1379121e1ea642 /ChangeLog | |
| parent | e02920bc029019443326eecaa7b267b78ff2892e (diff) | |
| download | glibc-4eb984d3ab5641ce7992204756ac15a61f5f7181.tar.gz glibc-4eb984d3ab5641ce7992204756ac15a61f5f7181.tar.xz glibc-4eb984d3ab5641ce7992204756ac15a61f5f7181.zip | |
Clean up BUSY_WAIT_NOP and atomic_delay.
This patch combines BUSY_WAIT_NOP and atomic_delay into a new atomic_spin_nop function and adjusts all clients. The new function is put into atomic.h because what is best done in a spin loop is architecture-specific, and atomics must be used for spinning. The function name is meant to tell users that this has no effect on synchronization semantics but is a performance aid for spinning.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 41176b5fc8..0e22a702e9 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,26 @@ +2015-06-30 Torvald Riegel <triegel@redhat.com> + + * sysdeps/unix/sysv/linux/i386/lowlevellock.h (BUSY_WAIT_NOP): Remove. + * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h (BUSY_WAIT_NOP): + Likewise. + * sysdeps/i386/i486/bits/atomic.h (atomic_delay): Rename to + atomic_spin_nop. + * sysdeps/x86_64/bits/atomic.h: Likewise. + * sysdeps/unix/sysv/linux/sparc/lowlevellock.h (BUSY_WAIT_NOP): Rename + to atomic_spin_nop and move ... + * sysdeps/sparc/sparc32/sparcv9/bits/atomic.h (atomic_spin_nop): + ... here and ... + * sysdeps/sparc/sparc64/bits/atomic.h: ... here. + * nptl/pthread_mutex_lock.c (__pthread_mutex_lock): Use + atomic_spin_nop instead of BUSY_WAIT_NOP. + * nptl/pthread_mutex_timedlock.c (__pthread_mutex_timedlock): + Likewise. + * sysdeps/nacl/lll_timedwait_tid.c (__lll_timedwait_tid): Likewise. + * sysdeps/nacl/lowlevellock.h (BUSY_WAIT_NOP): Remove. + (lll_wait_tid): Use atomic_spin_nop instead of BUSY_WAIT_NOP. + * nscd/nscd-client.h (__nscd_acquire_maplock): Use atomic_spin_nop + instead of atomic_delay. + 2015-06-29 Joseph Myers <joseph@codesourcery.com> [BZ #18613] |