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gen_stats: Add gnet_stats_add_queue().

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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>
This commit is contained in:
Sebastian Andrzej Siewior 2021-10-16 10:49:03 +02:00 committed by David S. Miller
parent fbf307c89e
commit 448e163f8b
2 changed files with 35 additions and 0 deletions
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3
include/net/gen_stats.h
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@ -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);

32
net/core/gen_stats.c
View File

@ -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