gen_stats: Add gnet_stats_add_queue().
This function will replace __gnet_stats_copy_queue(). It reads all arguments and adds them into the passed gnet_stats_queue argument. In contrast to __gnet_stats_copy_queue() it also copies the qlen member. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -62,6 +62,9 @@ int gnet_stats_copy_queue(struct gnet_dump *d,
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void __gnet_stats_copy_queue(struct gnet_stats_queue *qstats,
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const struct gnet_stats_queue __percpu *cpu_q,
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const struct gnet_stats_queue *q, __u32 qlen);
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void gnet_stats_add_queue(struct gnet_stats_queue *qstats,
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const struct gnet_stats_queue __percpu *cpu_q,
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const struct gnet_stats_queue *q);
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int gnet_stats_copy_app(struct gnet_dump *d, void *st, int len);
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int gnet_stats_finish_copy(struct gnet_dump *d);
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@ -321,6 +321,38 @@ void __gnet_stats_copy_queue(struct gnet_stats_queue *qstats,
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}
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EXPORT_SYMBOL(__gnet_stats_copy_queue);
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static void gnet_stats_add_queue_cpu(struct gnet_stats_queue *qstats,
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const struct gnet_stats_queue __percpu *q)
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{
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int i;
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for_each_possible_cpu(i) {
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const struct gnet_stats_queue *qcpu = per_cpu_ptr(q, i);
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qstats->qlen += qcpu->backlog;
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qstats->backlog += qcpu->backlog;
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qstats->drops += qcpu->drops;
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qstats->requeues += qcpu->requeues;
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qstats->overlimits += qcpu->overlimits;
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}
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}
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void gnet_stats_add_queue(struct gnet_stats_queue *qstats,
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const struct gnet_stats_queue __percpu *cpu,
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const struct gnet_stats_queue *q)
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{
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if (cpu) {
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gnet_stats_add_queue_cpu(qstats, cpu);
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} else {
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qstats->qlen += q->qlen;
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qstats->backlog += q->backlog;
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qstats->drops += q->drops;
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qstats->requeues += q->requeues;
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qstats->overlimits += q->overlimits;
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}
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}
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EXPORT_SYMBOL(gnet_stats_add_queue);
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/**
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* gnet_stats_copy_queue - copy queue statistics into statistics TLV
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* @d: dumping handle
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