Messages in this thread | | | Date | Sat, 15 Apr 2006 00:34:57 -0700 (PDT) | Subject | Re: [patch] ipv4: initialize arp_tbl rw lock | From | "David S. Miller" <> |
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From: Heiko Carstens <heiko.carstens@de.ibm.com> Date: Sat, 15 Apr 2006 09:27:45 +0200
> Tried to figure out what is causing the delays I experienced when I replaced > module_init() in af_inet.c with fs_initcall(). After all it turned out that > synchronize_net() which is basicically nothing else than synchronize_rcu() > sometimes takes several seconds to complete?! No idea why that is... > > callchain: inet_init() -> inet_register_protosw() -> synchronize_net()
The problem can't be rcu_init(), that gets done very early in init/main.c
Maybe it's some timer or something else specific to s390?
It could also be that there's perhaps nothing to context switch to, thus the RCU takes forever to "happen". - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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