linux/lib/pcounter.c

27 lines
624 B
C

/*
* Define default pcounter functions
* Note that often used pcounters use dedicated functions to get a speed increase.
* (see DEFINE_PCOUNTER/REF_PCOUNTER_MEMBER)
*/
#include <linux/module.h>
#include <linux/pcounter.h>
#include <linux/smp.h>
void pcounter_def_add(struct pcounter *self, int inc)
{
per_cpu_ptr(self->per_cpu_values, smp_processor_id())[0] += inc;
}
EXPORT_SYMBOL_GPL(pcounter_def_add);
int pcounter_def_getval(const struct pcounter *self)
{
int res = 0, cpu;
for_each_possible_cpu(cpu)
res += per_cpu_ptr(self->per_cpu_values, cpu)[0];
return res;
}
EXPORT_SYMBOL_GPL(pcounter_def_getval);