diff options
Diffstat (limited to 'lib/pcounter.c')
-rw-r--r-- | lib/pcounter.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/pcounter.c b/lib/pcounter.c new file mode 100644 index 000000000000..93feea598251 --- /dev/null +++ b/lib/pcounter.c @@ -0,0 +1,26 @@ +/* + * 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); |