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-rw-r--r--include/linux/pcounter.h74
1 files changed, 0 insertions, 74 deletions
diff --git a/include/linux/pcounter.h b/include/linux/pcounter.h
deleted file mode 100644
index a82d9f2628ca..000000000000
--- a/include/linux/pcounter.h
+++ /dev/null
@@ -1,74 +0,0 @@
-#ifndef __LINUX_PCOUNTER_H
-#define __LINUX_PCOUNTER_H
-/*
- * Using a dynamic percpu 'int' variable has a cost :
- * 1) Extra dereference
- * Current per_cpu_ptr() implementation uses an array per 'percpu variable'.
- * 2) memory cost of NR_CPUS*(32+sizeof(void *)) instead of num_possible_cpus()*4
- *
- * This pcounter implementation is an abstraction to be able to use
- * either a static or a dynamic per cpu variable.
- * One dynamic per cpu variable gets a fast & cheap implementation, we can
- * change pcounter implementation too.
- */
-struct pcounter {
-#ifdef CONFIG_SMP
- void (*add)(struct pcounter *self, int inc);
- int (*getval)(const struct pcounter *self, int cpu);
- int *per_cpu_values;
-#else
- int val;
-#endif
-};
-
-#ifdef CONFIG_SMP
-#include <linux/percpu.h>
-
-#define DEFINE_PCOUNTER(NAME) \
-static DEFINE_PER_CPU(int, NAME##_pcounter_values); \
-static void NAME##_pcounter_add(struct pcounter *self, int val) \
-{ \
- __get_cpu_var(NAME##_pcounter_values) += val; \
-} \
-static int NAME##_pcounter_getval(const struct pcounter *self, int cpu) \
-{ \
- return per_cpu(NAME##_pcounter_values, cpu); \
-} \
-
-#define PCOUNTER_MEMBER_INITIALIZER(NAME, MEMBER) \
- MEMBER = { \
- .add = NAME##_pcounter_add, \
- .getval = NAME##_pcounter_getval, \
- }
-
-
-static inline void pcounter_add(struct pcounter *self, int inc)
-{
- self->add(self, inc);
-}
-
-extern int pcounter_getval(const struct pcounter *self);
-extern int pcounter_alloc(struct pcounter *self);
-extern void pcounter_free(struct pcounter *self);
-
-
-#else /* CONFIG_SMP */
-
-static inline void pcounter_add(struct pcounter *self, int inc)
-{
- self->val += inc;
-}
-
-static inline int pcounter_getval(const struct pcounter *self)
-{
- return self->val;
-}
-
-#define DEFINE_PCOUNTER(NAME)
-#define PCOUNTER_MEMBER_INITIALIZER(NAME, MEMBER)
-#define pcounter_alloc(self) 0
-#define pcounter_free(self)
-
-#endif /* CONFIG_SMP */
-
-#endif /* __LINUX_PCOUNTER_H */