ide-pmac: remove pmac_ide_do_setfeature() (take 2)

[safe/jmp/linux-2.6] / include / linux / percpu_counter.h

diff --git a/include/linux/percpu_counter.h b/include/linux/percpu_counter.h
index 66b5de4..3d9f709 100644 (file)
--- a/include/linux/percpu_counter.h
+++ b/include/linux/percpu_counter.h
@@ -8,15 +8,20 @@
 
 #include <linux/spinlock.h>
 #include <linux/smp.h>
+#include <linux/list.h>
 #include <linux/threads.h>
 #include <linux/percpu.h>
+#include <linux/types.h>
 
 #ifdef CONFIG_SMP
 
 struct percpu_counter {
        spinlock_t lock;
-       long count;
-       long *counters;
+       s64 count;
+#ifdef CONFIG_HOTPLUG_CPU
+       struct list_head list;  /* All percpu_counters are on a list */
+#endif
+       s32 *counters;
 };
 
 #if NR_CPUS >= 16
@@ -25,22 +30,12 @@ struct percpu_counter {
 #define FBC_BATCH      (NR_CPUS*4)
 #endif
 
-static inline void percpu_counter_init(struct percpu_counter *fbc)
-{
-       spin_lock_init(&fbc->lock);
-       fbc->count = 0;
-       fbc->counters = alloc_percpu(long);
-}
+void percpu_counter_init(struct percpu_counter *fbc, s64 amount);
+void percpu_counter_destroy(struct percpu_counter *fbc);
+void percpu_counter_mod(struct percpu_counter *fbc, s32 amount);
+s64 percpu_counter_sum(struct percpu_counter *fbc);
 
-static inline void percpu_counter_destroy(struct percpu_counter *fbc)
-{
-       free_percpu(fbc->counters);
-}
-
-void percpu_counter_mod(struct percpu_counter *fbc, long amount);
-long percpu_counter_sum(struct percpu_counter *fbc);
-
-static inline long percpu_counter_read(struct percpu_counter *fbc)
+static inline s64 percpu_counter_read(struct percpu_counter *fbc)
 {
        return fbc->count;
 }
@@ -48,13 +43,14 @@ static inline long percpu_counter_read(struct percpu_counter *fbc)
 /*
  * It is possible for the percpu_counter_read() to return a small negative
  * number for some counter which should never be negative.
+ *
  */
-static inline long percpu_counter_read_positive(struct percpu_counter *fbc)
+static inline s64 percpu_counter_read_positive(struct percpu_counter *fbc)
 {
-       long ret = fbc->count;
+       s64 ret = fbc->count;
 
        barrier();              /* Prevent reloads of fbc->count */
-       if (ret > 0)
+       if (ret >= 0)
                return ret;
        return 1;
 }
@@ -62,12 +58,12 @@ static inline long percpu_counter_read_positive(struct percpu_counter *fbc)
 #else
 
 struct percpu_counter {
-       long count;
+       s64 count;
 };
 
-static inline void percpu_counter_init(struct percpu_counter *fbc)
+static inline void percpu_counter_init(struct percpu_counter *fbc, s64 amount)
 {
-       fbc->count = 0;
+       fbc->count = amount;
 }
 
 static inline void percpu_counter_destroy(struct percpu_counter *fbc)
@@ -75,24 +71,24 @@ static inline void percpu_counter_destroy(struct percpu_counter *fbc)
 }
 
 static inline void
-percpu_counter_mod(struct percpu_counter *fbc, long amount)
+percpu_counter_mod(struct percpu_counter *fbc, s32 amount)
 {
        preempt_disable();
        fbc->count += amount;
        preempt_enable();
 }
 
-static inline long percpu_counter_read(struct percpu_counter *fbc)
+static inline s64 percpu_counter_read(struct percpu_counter *fbc)
 {
        return fbc->count;
 }
 
-static inline long percpu_counter_read_positive(struct percpu_counter *fbc)
+static inline s64 percpu_counter_read_positive(struct percpu_counter *fbc)
 {
        return fbc->count;
 }
 
-static inline long percpu_counter_sum(struct percpu_counter *fbc)
+static inline s64 percpu_counter_sum(struct percpu_counter *fbc)
 {
        return percpu_counter_read_positive(fbc);
 }