A bit off-topic probably
but maybe this should not be in kernel/locking/percpu-rwsem.c but in a
generic percpu location as this construct is present in the core a few times
atleast in:
kernel/irq/irqdesc.c:kstat_irqs
kernel/fork.c:nr_processes
mm/memcontrol.c:mem_cgroup_read_events
mm/memcontrol.c:mem_cgroup_read_stat
> +
> +#define per_cpu_sum(var) \
> +({ \
> + typeof(var) __sum = 0; \
> + int cpu; \
> + for_each_possible_cpu(cpu) \
> + __sum += per_cpu(var, cpu); \
> + __sum; \
> +})
> +
so maybe put it into include/linux/percpu.h ?
thx!
hofrat
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