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Clean up whitespace in lock elision patches.

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Signed-off-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Dominik Vogt 2013-07-19 05:16:28 +00:00 committed by Carlos O'Donell
parent d3d3ce982a
commit 075b9322c9
15 changed files with 52 additions and 31 deletions
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15
nptl/ChangeLog
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@ -1,5 +1,20 @@
2013-07-19 Dominik Vogt <vogt@de.ibm.com>
* pthread_mutex_lock.c: Fix whitespace.
* pthread_mutex_trylock.c: Likewise.
* sysdeps/unix/sysv/linux/x86/bits/pthreadtypes.h: Likewise.
* sysdeps/unix/sysv/linux/x86/elision-conf.c: Likewise.
* sysdeps/unix/sysv/linux/x86/elision-conf.h: Likewise.
* sysdeps/unix/sysv/linux/x86/elision-lock.c: Likewise.
* sysdeps/unix/sysv/linux/x86/elision-timed.c: Likewise.
* sysdeps/unix/sysv/linux/x86/elision-trylock.c: Likewise.
* sysdeps/unix/sysv/linux/x86/force-elision.h: Likewise.
* sysdeps/unix/sysv/linux/x86/hle.h: Likewise.
* sysdeps/unix/sysv/linux/x86/pthread_mutex_cond_lock.c: Likewise.
* sysdeps/unix/sysv/linux/x86/pthread_mutex_lock.c: Likewise.
* sysdeps/unix/sysv/linux/x86/pthread_mutex_timedlock.c: Likewise.
* sysdeps/unix/sysv/linux/x86/pthread_mutex_trylock.c: Likewise.
* sysdeps/unix/sysv/linux/x86/elision-conf.c:
Remove __rwlock_rtm_enabled and __rwlock_rtm_read_retries.
(elision_init): Don't set __rwlock_rtm_enabled.

2
nptl/pthread_mutex_lock.c
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@ -86,7 +86,7 @@ __pthread_mutex_lock (mutex)
/* This case can never happen on a system without elision,
as the mutex type initialization functions will not
allow to set the elision flags. */
/* Don't record owner or users for elision case. This is a
/* Don't record owner or users for elision case. This is a
tail call. */
return LLL_MUTEX_LOCK_ELISION (mutex);
}

4
nptl/pthread_mutex_trylock.c
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@ -31,7 +31,7 @@
#endif
/* We don't force elision in trylock, because this can lead to inconsistent
lock state if the lock was actually busy. */
lock state if the lock was actually busy. */
int
__pthread_mutex_trylock (mutex)
@ -73,7 +73,7 @@ __pthread_mutex_trylock (mutex)
if (lll_trylock_elision (mutex->__data.__lock,
mutex->__data.__elision) != 0)
break;
/* Don't record the ownership. */
/* Don't record the ownership. */
return 0;
case PTHREAD_MUTEX_TIMED_NP:

2
nptl/sysdeps/unix/sysv/linux/x86/bits/pthreadtypes.h
View File

@ -112,7 +112,7 @@ typedef union
{
struct
{
short __espins;
short __espins;
short __elision;
# define __spins d.__espins
# define __elision d.__elision

11
nptl/sysdeps/unix/sysv/linux/x86/elision-conf.c
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@ -14,7 +14,7 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include <pthreadP.h>
@ -32,7 +32,7 @@ struct elision_config __elision_aconf =
acquisition attempts. */
.skip_lock_busy = 3,
/* How often to not attempt to use elision if a transaction aborted due
to reasons other than other threads' memory accesses. Expressed in
to reasons other than other threads' memory accesses. Expressed in
number of lock acquisition attempts. */
.skip_lock_internal_abort = 3,
/* How often we retry using elision if there is chance for the transaction
@ -43,13 +43,14 @@ struct elision_config __elision_aconf =
.skip_trylock_internal_abort = 3,
};
/* Set when the CPU supports elision. When false elision is never attempted. */
/* Set when the CPU supports elision. When false elision is never attempted.
*/
int __elision_available attribute_hidden;
/* Force elision for all new locks. This is used to decide whether existing
/* Force elision for all new locks. This is used to decide whether existing
DEFAULT locks should be automatically upgraded to elision in
pthread_mutex_lock(). Disabled for suid programs. Only used when elision
pthread_mutex_lock(). Disabled for suid programs. Only used when elision
is available. */
int __pthread_force_elision attribute_hidden;

2
nptl/sysdeps/unix/sysv/linux/x86/elision-conf.h
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@ -14,7 +14,7 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
<http://www.gnu.org/licenses/>. */
#ifndef _ELISION_CONF_H
#define _ELISION_CONF_H 1

10
nptl/sysdeps/unix/sysv/linux/x86/elision-lock.c
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@ -14,7 +14,7 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
<http://www.gnu.org/licenses/>. */
#include <pthread.h>
#include "pthreadP.h"
@ -58,7 +58,7 @@ __lll_lock_elision (int *futex, short *adapt_count, EXTRAARG int private)
if (*futex == 0)
return 0;
/* Lock was busy. Fall back to normal locking.
/* Lock was busy. Fall back to normal locking.
Could also _xend here but xabort with 0xff code
is more visible in the profiler. */
_xabort (_ABORT_LOCK_BUSY);
@ -69,12 +69,12 @@ __lll_lock_elision (int *futex, short *adapt_count, EXTRAARG int private)
if ((status & _XABORT_EXPLICIT)
&& _XABORT_CODE (status) == _ABORT_LOCK_BUSY)
{
/* Right now we skip here. Better would be to wait a bit
and retry. This likely needs some spinning. */
/* Right now we skip here. Better would be to wait a bit
and retry. This likely needs some spinning. */
if (*adapt_count != aconf.skip_lock_busy)
*adapt_count = aconf.skip_lock_busy;
}
/* Internal abort. There is no chance for retry.
/* Internal abort. There is no chance for retry.
Use the normal locking and next time use lock.
Be careful to avoid writing to the lock. */
else if (*adapt_count != aconf.skip_lock_internal_abort)

2
nptl/sysdeps/unix/sysv/linux/x86/elision-timed.c
View File

@ -14,7 +14,7 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
<http://www.gnu.org/licenses/>. */
#include <time.h>
#include <elision-conf.h>

14
nptl/sysdeps/unix/sysv/linux/x86/elision-trylock.c
View File

@ -14,7 +14,7 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
<http://www.gnu.org/licenses/>. */
#include <pthread.h>
#include <pthreadP.h>
@ -24,14 +24,14 @@
#define aconf __elision_aconf
/* Try to elide a futex trylock. FUTEX is the futex variable. ADAPT_COUNT is the
adaptation counter in the mutex. */
/* Try to elide a futex trylock. FUTEX is the futex variable. ADAPT_COUNT is
the adaptation counter in the mutex. */
int
__lll_trylock_elision (int *futex, short *adapt_count)
{
/* Implement POSIX semantics by forbiding nesting
trylock. Sorry. After the abort the code is re-executed
trylock. Sorry. After the abort the code is re-executed
non transactional and if the lock was already locked
return an error. */
_xabort (_ABORT_NESTED_TRYLOCK);
@ -46,7 +46,7 @@ __lll_trylock_elision (int *futex, short *adapt_count)
if (*futex == 0)
return 0;
/* Lock was busy. Fall back to normal locking.
/* Lock was busy. Fall back to normal locking.
Could also _xend here but xabort with 0xff code
is more visible in the profiler. */
_xabort (_ABORT_LOCK_BUSY);
@ -54,12 +54,12 @@ __lll_trylock_elision (int *futex, short *adapt_count)
if (!(status & _XABORT_RETRY))
{
/* Internal abort. No chance for retry. For future
/* Internal abort. No chance for retry. For future
locks don't try speculation for some time. */
if (*adapt_count != aconf.skip_trylock_internal_abort)
*adapt_count = aconf.skip_trylock_internal_abort;
}
/* Could do some retries here. */
/* Could do some retries here. */
}
else
{

2
nptl/sysdeps/unix/sysv/linux/x86/force-elision.h
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@ -14,7 +14,7 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
<http://www.gnu.org/licenses/>. */
/* Check for elision on this lock without upgrading. */
#define DO_ELISION(m) \

6
nptl/sysdeps/unix/sysv/linux/x86/hle.h
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@ -1,5 +1,5 @@
/* Shared RTM header. Emulate TSX intrinsics for compilers and assemblers
that do not support the intrinsics and instructions yet. */
/* Shared RTM header. Emulate TSX intrinsics for compilers and assemblers
that do not support the intrinsics and instructions yet. */
#ifndef _HLE_H
#define _HLE_H 1
@ -28,7 +28,7 @@
/* Official RTM intrinsics interface matching gcc/icc, but works
on older gcc compatible compilers and binutils.
We should somehow detect if the compiler supports it, because
it may be able to generate slightly better code. */
it may be able to generate slightly better code. */
#define _XBEGIN_STARTED (~0u)
#define _XABORT_EXPLICIT (1 << 0)

3
nptl/sysdeps/unix/sysv/linux/x86/pthread_mutex_cond_lock.c
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@ -13,9 +13,10 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
<http://www.gnu.org/licenses/>. */
/* The cond lock is not actually elided yet, but we still need to handle
already elided locks. */
#include <elision-conf.h>
#include "sysdeps/unix/sysv/linux/pthread_mutex_cond_lock.c"

3
nptl/sysdeps/unix/sysv/linux/x86/pthread_mutex_lock.c
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@ -14,7 +14,8 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
<http://www.gnu.org/licenses/>. */
#include <elision-conf.h>
#include "force-elision.h"

4
nptl/sysdeps/unix/sysv/linux/x86/pthread_mutex_timedlock.c
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@ -14,7 +14,9 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
<http://www.gnu.org/licenses/>. */
#include <elision-conf.h>
#include "force-elision.h"
#include "nptl/pthread_mutex_timedlock.c"

3
nptl/sysdeps/unix/sysv/linux/x86/pthread_mutex_trylock.c
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@ -14,7 +14,8 @@
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
<http://www.gnu.org/licenses/>. */
#include <elision-conf.h>
#include "force-elision.h"