Commit 448e163f authored by Sebastian Andrzej Siewior's avatar Sebastian Andrzej Siewior Committed by David S. Miller
Browse files

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: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent fbf307c8

include/net/gen_stats.h

+3 −0
Original line number Diff line number Diff line
@@ -62,6 +62,9 @@ int gnet_stats_copy_queue(struct gnet_dump *d, 
void __gnet_stats_copy_queue(struct gnet_stats_queue *qstats,

			     const struct gnet_stats_queue __percpu *cpu_q,

			     const struct gnet_stats_queue *q, __u32 qlen);

void gnet_stats_add_queue(struct gnet_stats_queue *qstats,

			  const struct gnet_stats_queue __percpu *cpu_q,

			  const struct gnet_stats_queue *q);

int gnet_stats_copy_app(struct gnet_dump *d, void *st, int len);



int gnet_stats_finish_copy(struct gnet_dump *d);

net/core/gen_stats.c

+32 −0
Original line number Diff line number Diff line
@@ -321,6 +321,38 @@ void __gnet_stats_copy_queue(struct gnet_stats_queue *qstats, 
}

EXPORT_SYMBOL(__gnet_stats_copy_queue);



static void gnet_stats_add_queue_cpu(struct gnet_stats_queue *qstats,

				     const struct gnet_stats_queue __percpu *q)

{

	int i;



	for_each_possible_cpu(i) {

		const struct gnet_stats_queue *qcpu = per_cpu_ptr(q, i);



		qstats->qlen += qcpu->backlog;

		qstats->backlog += qcpu->backlog;

		qstats->drops += qcpu->drops;

		qstats->requeues += qcpu->requeues;

		qstats->overlimits += qcpu->overlimits;

	}

}



void gnet_stats_add_queue(struct gnet_stats_queue *qstats,

			  const struct gnet_stats_queue __percpu *cpu,

			  const struct gnet_stats_queue *q)

{

	if (cpu) {

		gnet_stats_add_queue_cpu(qstats, cpu);

	} else {

		qstats->qlen += q->qlen;

		qstats->backlog += q->backlog;

		qstats->drops += q->drops;

		qstats->requeues += q->requeues;

		qstats->overlimits += q->overlimits;

	}

}

EXPORT_SYMBOL(gnet_stats_add_queue);



/**

 * gnet_stats_copy_queue - copy queue statistics into statistics TLV

 * @d: dumping handle