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authorEric Dumazet <edumazet@google.com>2020-03-16 19:12:49 -0700
committerDavid S. Miller <davem@davemloft.net>2020-03-17 21:16:34 -0700
commitefe074c2cc1c67021481f56ba87cc61d1ab03e33 (patch)
treea97d0f4458701cf87a11d2d1403369d1cf30eb7c /net/sched/sch_api.c
parent24ee86511b01f73a1ef1dd8a8a2e685e5ec03bfe (diff)
downloadlinux-efe074c2cc1c67021481f56ba87cc61d1ab03e33.tar.bz2
net_sched: add qdisc_watchdog_schedule_range_ns()
Some packet schedulers might want to add a slack when programming hrtimers. This can reduce number of interrupts and increase batch sizes and thus give good xmit_more savings. This commit adds qdisc_watchdog_schedule_range_ns() helper, with an extra delta_ns parameter. Legacy qdisc_watchdog_schedule_n() becomes an inline passing a zero slack. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_api.c')
-rw-r--r--net/sched/sch_api.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 50794125bf02..83984be04f57 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -618,7 +618,8 @@ void qdisc_watchdog_init(struct qdisc_watchdog *wd, struct Qdisc *qdisc)
}
EXPORT_SYMBOL(qdisc_watchdog_init);
-void qdisc_watchdog_schedule_ns(struct qdisc_watchdog *wd, u64 expires)
+void qdisc_watchdog_schedule_range_ns(struct qdisc_watchdog *wd, u64 expires,
+ u64 delta_ns)
{
if (test_bit(__QDISC_STATE_DEACTIVATED,
&qdisc_root_sleeping(wd->qdisc)->state))
@@ -628,11 +629,12 @@ void qdisc_watchdog_schedule_ns(struct qdisc_watchdog *wd, u64 expires)
return;
wd->last_expires = expires;
- hrtimer_start(&wd->timer,
- ns_to_ktime(expires),
- HRTIMER_MODE_ABS_PINNED);
+ hrtimer_start_range_ns(&wd->timer,
+ ns_to_ktime(expires),
+ delta_ns,
+ HRTIMER_MODE_ABS_PINNED);
}
-EXPORT_SYMBOL(qdisc_watchdog_schedule_ns);
+EXPORT_SYMBOL(qdisc_watchdog_schedule_range_ns);
void qdisc_watchdog_cancel(struct qdisc_watchdog *wd)
{