#ifndef _ASM_GENERIC_LOCAL64_H
#define _ASM_GENERIC_LOCAL64_H

#include <linux/percpu.h>
#include <asm/types.h>

/*
 * A signed long type for operations which are atomic for a single CPU.
 * Usually used in combination with per-cpu variables.
 *
 * This is the default implementation, which uses atomic64_t.  Which is
 * rather pointless.  The whole point behind local64_t is that some processors
 * can perform atomic adds and subtracts in a manner which is atomic wrt IRQs
 * running on this CPU.  local64_t allows exploitation of such capabilities.
 */

/* Implement in terms of atomics. */

#if BITS_PER_LONG == 64

#include <asm/local.h>

typedef struct {
	local_t a;
} local64_t;

#define LOCAL64_INIT(i)	{ LOCAL_INIT(i) }

#define local64_read(l)		local_read(&(l)->a)
#define local64_set(l,i)	local_set((&(l)->a),(i))
#define local64_inc(l)		local_inc(&(l)->a)
#define local64_dec(l)		local_dec(&(l)->a)
#define local64_add(i,l)	local_add((i),(&(l)->a))
#define local64_sub(i,l)	local_sub((i),(&(l)->a))

#define local64_sub_and_test(i, l) local_sub_and_test((i), (&(l)->a))
#define local64_dec_and_test(l) local_dec_and_test(&(l)->a)
#define local64_inc_and_test(l) local_inc_and_test(&(l)->a)
#define local64_add_negative(i, l) local_add_negative((i), (&(l)->a))
#define local64_add_return(i, l) local_add_return((i), (&(l)->a))
#define local64_sub_return(i, l) local_sub_return((i), (&(l)->a))
#define local64_inc_return(l)	local_inc_return(&(l)->a)

#define local64_cmpxchg(l, o, n) local_cmpxchg((&(l)->a), (o), (n))
#define local64_xchg(l, n)	local_xchg((&(l)->a), (n))
#define local64_add_unless(l, _a, u) local_add_unless((&(l)->a), (_a), (u))
#define local64_inc_not_zero(l)	local_inc_not_zero(&(l)->a)

/* Non-atomic variants, ie. preemption disabled and won't be touched
 * in interrupt, etc.  Some archs can optimize this case well. */
#define __local64_inc(l)	local64_set((l), local64_read(l) + 1)
#define __local64_dec(l)	local64_set((l), local64_read(l) - 1)
#define __local64_add(i,l)	local64_set((l), local64_read(l) + (i))
#define __local64_sub(i,l)	local64_set((l), local64_read(l) - (i))

#else /* BITS_PER_LONG != 64 */

#include <linux/atomic.h>

/* Don't use typedef: don't want them to be mixed with atomic_t's. */
typedef struct {
	atomic64_t a;
} local64_t;

#define LOCAL64_INIT(i)	{ ATOMIC_LONG_INIT(i) }

#define local64_read(l)		atomic64_read(&(l)->a)
#define local64_set(l,i)	atomic64_set((&(l)->a),(i))
#define local64_inc(l)		atomic64_inc(&(l)->a)
#define local64_dec(l)		atomic64_dec(&(l)->a)
#define local64_add(i,l)	atomic64_add((i),(&(l)->a))
#define local64_sub(i,l)	atomic64_sub((i),(&(l)->a))

#define local64_sub_and_test(i, l) atomic64_sub_and_test((i), (&(l)->a))
#define local64_dec_and_test(l) atomic64_dec_and_test(&(l)->a)
#define local64_inc_and_test(l) atomic64_inc_and_test(&(l)->a)
#define local64_add_negative(i, l) atomic64_add_negative((i), (&(l)->a))
#define local64_add_return(i, l) atomic64_add_return((i), (&(l)->a))
#define local64_sub_return(i, l) atomic64_sub_return((i), (&(l)->a))
#define local64_inc_return(l)	atomic64_inc_return(&(l)->a)

#define local64_cmpxchg(l, o, n) atomic64_cmpxchg((&(l)->a), (o), (n))
#define local64_xchg(l, n)	atomic64_xchg((&(l)->a), (n))
#define local64_add_unless(l, _a, u) atomic64_add_unless((&(l)->a), (_a), (u))
#define local64_inc_not_zero(l)	atomic64_inc_not_zero(&(l)->a)

/* Non-atomic variants, ie. preemption disabled and won't be touched
 * in interrupt, etc.  Some archs can optimize this case well. */
#define __local64_inc(l)	local64_set((l), local64_read(l) + 1)
#define __local64_dec(l)	local64_set((l), local64_read(l) - 1)
#define __local64_add(i,l)	local64_set((l), local64_read(l) + (i))
#define __local64_sub(i,l)	local64_set((l), local64_read(l) - (i))

#endif /* BITS_PER_LONG != 64 */

#endif /* _ASM_GENERIC_LOCAL64_H */
tion value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-01 12:27:05 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-01 12:27:05 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/irda?id=4759d386d55fef452d692bf101167914437e848e'>4759d386d55fef452d692bf101167914437e848e</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/net/irda?id=4759d386d55fef452d692bf101167914437e848e'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=4759d386d55fef452d692bf101167914437e848e'>e7109c192ec589fcea2a98f9702aa3c0e4009581</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/net/irda?id=4759d386d55fef452d692bf101167914437e848e'>include/net/irda</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/irda?id=238d1d0f79f619d75c2cc741d6770fb0986aef24'>238d1d0f79f619d75c2cc741d6770fb0986aef24</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/irda?id=4759d386d55fef452d692bf101167914437e848e&amp;id2=238d1d0f79f619d75c2cc741d6770fb0986aef24'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/irda?id=1db175428ee374489448361213e9c3b749d14900'>1db175428ee374489448361213e9c3b749d14900</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/irda?id=4759d386d55fef452d692bf101167914437e848e&amp;id2=1db175428ee374489448361213e9c3b749d14900'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm</div><div class='commit-msg'>Pull DAX updates from Dan Williams:
 "The completion of Jan's DAX work for 4.10.

  As I mentioned in the libnvdimm-for-4.10 pull request, these are some
  final fixes for the DAX dirty-cacheline-tracking invalidation work
  that was merged through the -mm, ext4, and xfs trees in -rc1. These
  patches were prepared prior to the merge window, but we waited for
  4.10-rc1 to have a stable merge base after all the prerequisites were
  merged.

  Quoting Jan on the overall changes in these patches:

     "So I'd like all these 6 patches to go for rc2. The first three
      patches fix invalidation of exceptional DAX entries (a bug which
      is there for a long time) - without these patches data loss can
      occur on power failure even though user called fsync(2). The other
      three patches change locking of DAX faults so that -&gt;iomap_begin()
      is called in a more relaxed locking context and we are safe to
      start a transaction there for ext4"

  These have received a build success notification from the kbuild
  robot, and pass the latest libnvdimm unit tests. There have not been
  any -next releases since -rc1, so they have not appeared there"

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  ext4: Simplify DAX fault path
  dax: Call -&gt;iomap_begin without entry lock during dax fault
  dax: Finish fault completely when loading holes
  dax: Avoid page invalidation races and unnecessary radix tree traversals
  mm: Invalidate DAX radix tree entries only if appropriate
  ext2: Return BH_New buffers for zeroed blocks
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=4759d386d55fef452d692bf101167914437e848e'>Diffstat</a> (limited to 'include/net/irda')</div><table summary='diffstat' class='diffstat'>