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authorRusty Russell <rusty@rustcorp.com.au>2009-10-29 22:34:15 +0900
committerTejun Heo <tj@kernel.org>2009-10-29 22:34:15 +0900
commitdd17c8f72993f9461e9c19250e3f155d6d99df22 (patch)
treec33eedf0cf2862e9feeb796e94d49a2ccdce0149 /include
parent390dfd95c5df1ab3921dd388d11b2aee332c3f2c (diff)
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percpu: remove per_cpu__ prefix.
Now that the return from alloc_percpu is compatible with the address of per-cpu vars, it makes sense to hand around the address of per-cpu variables. To make this sane, we remove the per_cpu__ prefix we used created to stop people accidentally using these vars directly. Now we have sparse, we can use that (next patch). tj: * Updated to convert stuff which were missed by or added after the original patch. * Kill per_cpu_var() macro. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/asm-generic/percpu.h12
-rw-r--r--include/linux/percpu-defs.h18
-rw-r--r--include/linux/percpu.h5
-rw-r--r--include/linux/vmstat.h8
4 files changed, 18 insertions, 25 deletions
diff --git a/include/asm-generic/percpu.h b/include/asm-generic/percpu.h
index 8087b90d4673..ca6f0491412b 100644
--- a/include/asm-generic/percpu.h
+++ b/include/asm-generic/percpu.h
@@ -50,11 +50,11 @@ extern unsigned long __per_cpu_offset[NR_CPUS];
* offset.
*/
#define per_cpu(var, cpu) \
- (*SHIFT_PERCPU_PTR(&per_cpu_var(var), per_cpu_offset(cpu)))
+ (*SHIFT_PERCPU_PTR(&(var), per_cpu_offset(cpu)))
#define __get_cpu_var(var) \
- (*SHIFT_PERCPU_PTR(&per_cpu_var(var), my_cpu_offset))
+ (*SHIFT_PERCPU_PTR(&(var), my_cpu_offset))
#define __raw_get_cpu_var(var) \
- (*SHIFT_PERCPU_PTR(&per_cpu_var(var), __my_cpu_offset))
+ (*SHIFT_PERCPU_PTR(&(var), __my_cpu_offset))
#define this_cpu_ptr(ptr) SHIFT_PERCPU_PTR(ptr, my_cpu_offset)
#define __this_cpu_ptr(ptr) SHIFT_PERCPU_PTR(ptr, __my_cpu_offset)
@@ -66,9 +66,9 @@ extern void setup_per_cpu_areas(void);
#else /* ! SMP */
-#define per_cpu(var, cpu) (*((void)(cpu), &per_cpu_var(var)))
-#define __get_cpu_var(var) per_cpu_var(var)
-#define __raw_get_cpu_var(var) per_cpu_var(var)
+#define per_cpu(var, cpu) (*((void)(cpu), &(var)))
+#define __get_cpu_var(var) (var)
+#define __raw_get_cpu_var(var) (var)
#define this_cpu_ptr(ptr) per_cpu_ptr(ptr, 0)
#define __this_cpu_ptr(ptr) this_cpu_ptr(ptr)
diff --git a/include/linux/percpu-defs.h b/include/linux/percpu-defs.h
index 5a5d6ce4bd55..ee99f6c2cdcd 100644
--- a/include/linux/percpu-defs.h
+++ b/include/linux/percpu-defs.h
@@ -2,12 +2,6 @@
#define _LINUX_PERCPU_DEFS_H
/*
- * Determine the real variable name from the name visible in the
- * kernel sources.
- */
-#define per_cpu_var(var) per_cpu__##var
-
-/*
* Base implementations of per-CPU variable declarations and definitions, where
* the section in which the variable is to be placed is provided by the
* 'sec' argument. This may be used to affect the parameters governing the
@@ -56,24 +50,24 @@
*/
#define DECLARE_PER_CPU_SECTION(type, name, sec) \
extern __PCPU_DUMMY_ATTRS char __pcpu_scope_##name; \
- extern __PCPU_ATTRS(sec) __typeof__(type) per_cpu__##name
+ extern __PCPU_ATTRS(sec) __typeof__(type) name
#define DEFINE_PER_CPU_SECTION(type, name, sec) \
__PCPU_DUMMY_ATTRS char __pcpu_scope_##name; \
extern __PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
__PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
__PCPU_ATTRS(sec) PER_CPU_DEF_ATTRIBUTES __weak \
- __typeof__(type) per_cpu__##name
+ __typeof__(type) name
#else
/*
* Normal declaration and definition macros.
*/
#define DECLARE_PER_CPU_SECTION(type, name, sec) \
- extern __PCPU_ATTRS(sec) __typeof__(type) per_cpu__##name
+ extern __PCPU_ATTRS(sec) __typeof__(type) name
#define DEFINE_PER_CPU_SECTION(type, name, sec) \
__PCPU_ATTRS(sec) PER_CPU_DEF_ATTRIBUTES \
- __typeof__(type) per_cpu__##name
+ __typeof__(type) name
#endif
/*
@@ -137,8 +131,8 @@
/*
* Intermodule exports for per-CPU variables.
*/
-#define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var)
-#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var)
+#define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(var)
+#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(var)
#endif /* _LINUX_PERCPU_DEFS_H */
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index 522f421ec213..e12410e55e05 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -182,7 +182,7 @@ static inline void *pcpu_lpage_remapped(void *kaddr)
#ifndef percpu_read
# define percpu_read(var) \
({ \
- typeof(per_cpu_var(var)) __tmp_var__; \
+ typeof(var) __tmp_var__; \
__tmp_var__ = get_cpu_var(var); \
put_cpu_var(var); \
__tmp_var__; \
@@ -253,8 +253,7 @@ do { \
/*
* Optimized manipulation for memory allocated through the per cpu
- * allocator or for addresses of per cpu variables (can be determined
- * using per_cpu_var(xx).
+ * allocator or for addresses of per cpu variables.
*
* These operation guarantee exclusivity of access for other operations
* on the *same* processor. The assumption is that per cpu data is only
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index d85889710f9b..3e489fda11a1 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -76,22 +76,22 @@ DECLARE_PER_CPU(struct vm_event_state, vm_event_states);
static inline void __count_vm_event(enum vm_event_item item)
{
- __this_cpu_inc(per_cpu_var(vm_event_states).event[item]);
+ __this_cpu_inc(vm_event_states.event[item]);
}
static inline void count_vm_event(enum vm_event_item item)
{
- this_cpu_inc(per_cpu_var(vm_event_states).event[item]);
+ this_cpu_inc(vm_event_states.event[item]);
}
static inline void __count_vm_events(enum vm_event_item item, long delta)
{
- __this_cpu_add(per_cpu_var(vm_event_states).event[item], delta);
+ __this_cpu_add(vm_event_states.event[item], delta);
}
static inline void count_vm_events(enum vm_event_item item, long delta)
{
- this_cpu_add(per_cpu_var(vm_event_states).event[item], delta);
+ this_cpu_add(vm_event_states.event[item], delta);
}
extern void all_vm_events(unsigned long *);