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authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2010-11-16 11:06:22 -0800
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2010-11-16 11:06:22 -0800
commit20b4755e4fbb226eb42951bd40b53fcbce9ef944 (patch)
tree43da70e0b32ee423d3643ecd422821383411ab72 /include/asm-generic/atomic.h
parentxen: fix header export to userspace (diff)
parentLinux 2.6.37-rc2 (diff)
downloadlinux-dev-20b4755e4fbb226eb42951bd40b53fcbce9ef944.tar.xz
linux-dev-20b4755e4fbb226eb42951bd40b53fcbce9ef944.zip
Merge commit 'v2.6.37-rc2' into upstream/xenfs
* commit 'v2.6.37-rc2': (10093 commits) Linux 2.6.37-rc2 capabilities/syslog: open code cap_syslog logic to fix build failure i2c: Sanity checks on adapter registration i2c: Mark i2c_adapter.id as deprecated i2c: Drivers shouldn't include <linux/i2c-id.h> i2c: Delete unused adapter IDs i2c: Remove obsolete cleanup for clientdata include/linux/kernel.h: Move logging bits to include/linux/printk.h Fix gcc 4.5.1 miscompiling drivers/char/i8k.c (again) hwmon: (w83795) Check for BEEP pin availability hwmon: (w83795) Clear intrusion alarm immediately hwmon: (w83795) Read the intrusion state properly hwmon: (w83795) Print the actual temperature channels as sources hwmon: (w83795) List all usable temperature sources hwmon: (w83795) Expose fan control method hwmon: (w83795) Fix fan control mode attributes hwmon: (lm95241) Check validity of input values hwmon: Change mail address of Hans J. Koch PCI: sysfs: fix printk warnings GFS2: Fix inode deallocation race ...
Diffstat (limited to 'include/asm-generic/atomic.h')
-rw-r--r--include/asm-generic/atomic.h39
1 files changed, 20 insertions, 19 deletions
diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h
index e53347fbf1da..e994197f84b7 100644
--- a/include/asm-generic/atomic.h
+++ b/include/asm-generic/atomic.h
@@ -43,6 +43,7 @@
*/
#define atomic_set(v, i) (((v)->counter) = (i))
+#include <linux/irqflags.h>
#include <asm/system.h>
/**
@@ -57,7 +58,7 @@ static inline int atomic_add_return(int i, atomic_t *v)
unsigned long flags;
int temp;
- raw_local_irq_save(flags); /* Don't trace it in a irqsoff handler */
+ raw_local_irq_save(flags); /* Don't trace it in an irqsoff handler */
temp = v->counter;
temp += i;
v->counter = temp;
@@ -78,7 +79,7 @@ static inline int atomic_sub_return(int i, atomic_t *v)
unsigned long flags;
int temp;
- raw_local_irq_save(flags); /* Don't trace it in a irqsoff handler */
+ raw_local_irq_save(flags); /* Don't trace it in an irqsoff handler */
temp = v->counter;
temp -= i;
v->counter = temp;
@@ -119,14 +120,23 @@ static inline void atomic_dec(atomic_t *v)
#define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0)
#define atomic_inc_and_test(v) (atomic_add_return(1, (v)) == 0)
-#define atomic_add_unless(v, a, u) \
-({ \
- int c, old; \
- c = atomic_read(v); \
- while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
- c = old; \
- c != (u); \
-})
+#define atomic_xchg(ptr, v) (xchg(&(ptr)->counter, (v)))
+#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new)))
+
+#define cmpxchg_local(ptr, o, n) \
+ ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\
+ (unsigned long)(n), sizeof(*(ptr))))
+
+#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
+
+static inline int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int c, old;
+ c = atomic_read(v);
+ while (c != u && (old = atomic_cmpxchg(v, c, c + a)) != c)
+ c = old;
+ return c != u;
+}
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
@@ -140,15 +150,6 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
raw_local_irq_restore(flags);
}
-#define atomic_xchg(ptr, v) (xchg(&(ptr)->counter, (v)))
-#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new)))
-
-#define cmpxchg_local(ptr, o, n) \
- ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\
- (unsigned long)(n), sizeof(*(ptr))))
-
-#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
-
/* Assume that atomic operations are already serializing */
#define smp_mb__before_atomic_dec() barrier()
#define smp_mb__after_atomic_dec() barrier()