Re: Scalability of interface creation and deletion
From: Eric Dumazet <hidden>
Date: 2011-05-07 18:39:17
Subsystem:
the rest · Maintainer:
Linus Torvalds
Le samedi 07 mai 2011 à 20:32 +0200, Eric Dumazet a écrit : Also you could patch synchronize_sched() itself instead of synchronize_net()
diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index dd4aea8..4af6e10 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c@@ -1518,6 +1518,7 @@ EXPORT_SYMBOL_GPL(call_rcu_bh); void synchronize_sched(void) { struct rcu_synchronize rcu; + ktime_t time_start = ktime_get(); if (rcu_blocking_is_gp()) return;
@@ -1529,6 +1530,7 @@ void synchronize_sched(void) /* Wait for it. */ wait_for_completion(&rcu.completion); destroy_rcu_head_on_stack(&rcu.head); + pr_err("synchronize_rcu() in %lld us\n", ktime_us_delta(ktime_get(), time_start)); } EXPORT_SYMBOL_GPL(synchronize_sched);