Commit:     5e97b9309baa76b476ec7e0d6e9c097edeb4142c
Parent:     2856f5e31c1413bf6e4f1371e07e17078a5fee5e
Author:     Mathieu Desnoyers <[EMAIL PROTECTED]>
AuthorDate: Tue May 8 00:34:40 2007 -0700
Committer:  Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Tue May 8 11:15:20 2007 -0700

    local_t: architecture independent extension
    This series extena and standardises local_t operations on each architecture,
    allowing a rich set of atomic operations to be done on per-cpu data with
    minimal performance impact.  On architectures where there seems to be no
    difference between the SMP and UP operation (same memory barriers, same
    LOCKing), local.h simply includes asm-generic/local.h, which removes
    duplicated code from the current kernel tree.
    This patch:
    local_t: architecture independent extension
    Signed-off-by: Mathieu Desnoyers <[EMAIL PROTECTED]>
    Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
    Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
 include/asm-generic/local.h |   33 +++++++++++++++++++++++----------
 1 files changed, 23 insertions(+), 10 deletions(-)

diff --git a/include/asm-generic/local.h b/include/asm-generic/local.h
index ab46929..33d7d04 100644
--- a/include/asm-generic/local.h
+++ b/include/asm-generic/local.h
@@ -33,6 +33,19 @@ typedef struct
 #define local_add(i,l) atomic_long_add((i),(&(l)->a))
 #define local_sub(i,l) atomic_long_sub((i),(&(l)->a))
+#define local_sub_and_test(i, l) atomic_long_sub_and_test((i), (&(l)->a))
+#define local_dec_and_test(l) atomic_long_dec_and_test(&(l)->a)
+#define local_inc_and_test(l) atomic_long_inc_and_test(&(l)->a)
+#define local_add_negative(i, l) atomic_long_add_negative((i), (&(l)->a))
+#define local_add_return(i, l) atomic_long_add_return((i), (&(l)->a))
+#define local_sub_return(i, l) atomic_long_sub_return((i), (&(l)->a))
+#define local_inc_return(l) atomic_long_inc_return(&(l)->a)
+#define local_cmpxchg(l, o, n) atomic_long_cmpxchg((&(l)->a), (o), (n))
+#define local_xchg(l, n) atomic_long_xchg((&(l)->a), (n))
+#define local_add_unless(l, a, u) atomic_long_add_unless((&(l)->a), (a), (u))
+#define local_inc_not_zero(l) atomic_long_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 __local_inc(l)         local_set((l), local_read(l) + 1)
@@ -44,19 +57,19 @@ typedef struct
  * much more efficient than these naive implementations.  Note they take
  * a variable (eg., not an address.
-#define cpu_local_read(v)      local_read(&__get_cpu_var(v))
-#define cpu_local_set(v, i)    local_set(&__get_cpu_var(v), (i))
-#define cpu_local_inc(v)       local_inc(&__get_cpu_var(v))
-#define cpu_local_dec(v)       local_dec(&__get_cpu_var(v))
-#define cpu_local_add(i, v)    local_add((i), &__get_cpu_var(v))
-#define cpu_local_sub(i, v)    local_sub((i), &__get_cpu_var(v))
+#define cpu_local_read(l)      local_read(&__get_cpu_var(l))
+#define cpu_local_set(l, i)    local_set(&__get_cpu_var(l), (i))
+#define cpu_local_inc(l)       local_inc(&__get_cpu_var(l))
+#define cpu_local_dec(l)       local_dec(&__get_cpu_var(l))
+#define cpu_local_add(i, l)    local_add((i), &__get_cpu_var(l))
+#define cpu_local_sub(i, l)    local_sub((i), &__get_cpu_var(l))
 /* Non-atomic increments, ie. preemption disabled and won't be touched
  * in interrupt, etc.  Some archs can optimize this case well.
-#define __cpu_local_inc(v)     __local_inc(&__get_cpu_var(v))
-#define __cpu_local_dec(v)     __local_dec(&__get_cpu_var(v))
-#define __cpu_local_add(i, v)  __local_add((i), &__get_cpu_var(v))
-#define __cpu_local_sub(i, v)  __local_sub((i), &__get_cpu_var(v))
+#define __cpu_local_inc(l)     __local_inc(&__get_cpu_var(l))
+#define __cpu_local_dec(l)     __local_dec(&__get_cpu_var(l))
+#define __cpu_local_add(i, l)  __local_add((i), &__get_cpu_var(l))
+#define __cpu_local_sub(i, l)  __local_sub((i), &__get_cpu_var(l))
 #endif /* _ASM_GENERIC_LOCAL_H */
To unsubscribe from this list: send the line "unsubscribe git-commits-head" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at

Reply via email to