linux-toradex.git/include/asm-generic/atomic.h, branch v3.2-rc5

asm-generic/atomic.h: allow SMP peeps to leverage this

2011-07-26T23:49:48+00:00

Only a few core funcs need to be implemented for SMP systems, so allow the
arches to override them while getting the rest for free.

At least, this is enough to allow the Blackfin SMP port to use things.

Signed-off-by: Mike Frysinger 
Cc: Arun Sharma 
Cc: Arnd Bergmann 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

asm-generic/atomic.h: add atomic_set_mask() helper

2011-07-26T23:49:48+00:00

Since arches are expected to implement this guy, add a common version for
people the same way as atomic_clear_mask is handled.

Signed-off-by: Mike Frysinger 
Cc: Arun Sharma 
Cc: Arnd Bergmann 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

asm-generic/atomic.h: fix type used in atomic_clear_mask

2011-07-26T23:49:47+00:00

The atomic helpers are supposed to take an atomic_t pointer, not a random
unsigned long pointer.  So convert atomic_clear_mask over.

While we're here, also add some nice documentation to the func.

Signed-off-by: Mike Frysinger 
Cc: Arun Sharma 
Cc: Arnd Bergmann 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

asm-generic/atomic.h: simplify inc/dec test helpers

2011-07-26T23:49:47+00:00

We already declared inc/dec helpers, so we don't need to call the
atomic_{add,sub}_return funcs directly.

Signed-off-by: Mike Frysinger 
Cc: Arun Sharma 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

atomic: Update comments in atomic.h

2011-07-26T23:49:47+00:00

This clarifies the differences between  and


Signed-off-by: Arun Sharma 
Suggested-by: Mike Frysinger 
Cc: Eric Dumazet 
Cc: Ingo Molnar 
Cc: David Miller 
Acked-by: Mike Frysinger 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

atomic: cleanup asm-generic atomic*.h inclusion

2011-07-26T23:49:47+00:00

After changing all consumers of atomics to include , we
ran into some compile time errors due to this dependency chain:

linux/atomic.h
  -> asm/atomic.h
    -> asm-generic/atomic-long.h

where atomic-long.h could use funcs defined later in linux/atomic.h
without a prototype.  This patches moves the code that includes
asm-generic/atomic*.h to linux/atomic.h.

Archs that need  need to select
CONFIG_GENERIC_ATOMIC64 from now on (some of them used to include it
unconditionally).

Compile tested on i386 and x86_64 with allnoconfig.

Signed-off-by: Arun Sharma 
Cc: Eric Dumazet 
Cc: Ingo Molnar 
Cc: David Miller 
Acked-by: Mike Frysinger 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

atomic: move atomic_add_unless to generic code

2011-07-26T23:49:47+00:00

This is in preparation for more generic atomic primitives based on
__atomic_add_unless.

Signed-off-by: Arun Sharma 
Signed-off-by: Hans-Christian Egtvedt 
Reviewed-by: Eric Dumazet 
Cc: Ingo Molnar 
Cc: David Miller 
Acked-by: Mike Frysinger 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

atomic: use

2011-07-26T23:49:47+00:00

This allows us to move duplicated code in 
(atomic_inc_not_zero() for now) to 

Signed-off-by: Arun Sharma 
Reviewed-by: Eric Dumazet 
Cc: Ingo Molnar 
Cc: David Miller 
Cc: Eric Dumazet 
Acked-by: Mike Frysinger 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

2010-10-22T18:17:06+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic/io.h: allow people to override individual funcs
  bitops: remove duplicated extern declarations
  bitops: make asm-generic/bitops/find.h more generic
  asm-generic: kdebug.h: Checkpatch cleanup
  asm-generic: fcntl: make exported headers use strict posix types
  asm-generic: cmpxchg does not handle non-long arguments
  asm-generic: make atomic_add_unless a function

asm-generic: make atomic_add_unless a function

2010-10-09T19:36:35+00:00

atomic_add_unless is a macro so, bad things happen if the caller defines
a local variable named c, just like like the local variable c defined by
the macro. Thus, convert atomic_add_unless to a function. (bug triggered
by net/ipv4/netfilter/ipt_CLUSTERIP.c: clusterip_config_find_get calls
atomic_inc_not_zero)

Signed-off-by: Mathieu Lacage 
Signed-off-by: Arnd Bergmann