linux-toradex.git/include/linux/spinlock.h, branch v2.6.33.1

locking: Cleanup the name space completely

2009-12-14T22:55:33+00:00

Make the name space hierarchy of locking functions consistent:
     raw_spin* -> _raw_spin* -> __raw_spin*

No functional change.

Signed-off-by: Thomas Gleixner 
Acked-by: Peter Zijlstra 
Acked-by: Ingo Molnar

locking: Further name space cleanups

2009-12-14T22:55:33+00:00

The name space hierarchy for the internal lock functions is now a bit
backwards. raw_spin* functions map to _spin* which use __spin*, while
we would like to have _raw_spin* and __raw_spin*.

_raw_spin* is already used by lock debugging, so rename those funtions
to do_raw_spin* to free up the _raw_spin* name space.

No functional change.

Signed-off-by: Thomas Gleixner 
Acked-by: Peter Zijlstra 
Acked-by: Ingo Molnar

locking: Implement new raw_spinlock

2009-12-14T22:55:32+00:00

Now that the raw_spin name space is freed up, we can implement
raw_spinlock and the related functions which are used to annotate the
locks which are not converted to sleeping spinlocks in preempt-rt.

A side effect is that only such locks can be used with the low level
lock fsunctions which circumvent lockdep.

For !rt spin_* functions are mapped to the raw_spin* implementations.

Signed-off-by: Thomas Gleixner 
Acked-by: Peter Zijlstra 
Acked-by: Ingo Molnar

locking: Convert raw_rwlock to arch_rwlock

2009-12-14T22:55:32+00:00

Not strictly necessary for -rt as -rt does not have non sleeping
rwlocks, but it's odd to not have a consistent naming convention.

No functional change.

Signed-off-by: Thomas Gleixner 
Acked-by: Peter Zijlstra 
Acked-by: David S. Miller 
Acked-by: Ingo Molnar 
Cc: linux-arch@vger.kernel.org

locking: Convert __raw_spin* functions to arch_spin*

2009-12-14T22:55:32+00:00

Name space cleanup. No functional change.

Signed-off-by: Thomas Gleixner 
Acked-by: Peter Zijlstra 
Acked-by: David S. Miller 
Acked-by: Ingo Molnar 
Cc: linux-arch@vger.kernel.org

locking: Convert raw_spinlock to arch_spinlock

2009-12-14T22:55:32+00:00

The raw_spin* namespace was taken by lockdep for the architecture
specific implementations. raw_spin_* would be the ideal name space for
the spinlocks which are not converted to sleeping locks in preempt-rt.

Linus suggested to convert the raw_ to arch_ locks and cleanup the
name space instead of using an artifical name like core_spin,
atomic_spin or whatever

No functional change.

Signed-off-by: Thomas Gleixner 
Acked-by: Peter Zijlstra 
Acked-by: David S. Miller 
Acked-by: Ingo Molnar 
Cc: linux-arch@vger.kernel.org

locking: Split rwlock from spinlock headers

2009-12-14T22:55:32+00:00

Move the rwlock defines and inlines into separate header files. This
makes the selection for -rt easier.

No functional change.

Signed-off-by: Thomas Gleixner 
Acked-by: Peter Zijlstra 
Acked-by: Ingo Molnar

locking: Use __[SPIN|RW]_LOCK_UNLOCKED in [spin|rw]_lock_init()

2009-11-24T13:41:13+00:00

SPIN_LOCK_UNLOCKED and RW_LOCK_UNLOCKED are deprecated. Replace them
with the __*_LOCK_UNLOCKED variants.

Signed-off-by: Thomas Gleixner

locking: Remove unused prototype

2009-11-24T13:41:12+00:00

commit 910067d1(remove generic__raw_read_trylock()) removed the
implementation but left the prototype around. Remove it.

Signed-off-by: Thomas Gleixner

locking: Simplify spinlock inlining

2009-08-31T16:08:51+00:00

For !DEBUG_SPINLOCK && !PREEMPT && SMP the spin_unlock()
functions were always inlined by using special defines which
would call the __raw* functions.

The out-of-line variants for these functions would be generated
anyway.

Use the new per unlock/locking variant mechanism to force
inlining of the unlock functions like before. This is not a
functional change, we just get rid of one additional way to
force inlining.

Signed-off-by: Heiko Carstens 
Acked-by: Peter Zijlstra 
Cc: Arnd Bergmann 
Cc: Nick Piggin 
Cc: Martin Schwidefsky 
Cc: Horst Hartmann 
Cc: Christian Ehrhardt 
Cc: Andrew Morton 
Cc: Linus Torvalds 
Cc: David Miller 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: Geert Uytterhoeven 
Cc: Roman Zippel 
Cc: 
LKML-Reference: <20090831124418.848735034@de.ibm.com>
Signed-off-by: Ingo Molnar