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From: | Paolo Bonzini |
Subject: | Re: [Qemu-devel] [PATCH] rcu: actually register threads that have RCU read-side critical sections |
Date: | Thu, 23 Jul 2015 07:35:48 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.0.1 |
On 23/07/2015 04:56, Wen Congyang wrote: >> > Otherwise, grace periods are detected too early! > We always use qemu_thread_create() in qemu. So I think we can do it like this: > wrapped_fn() > { > rcu_register_thread(); > call thread_fn() here > rcu_unregister_thread(); > } > > So we will never forget to call rcu_register_thread() when creating a new > thread. That's a good idea. Would you like to propose a patch for 2.5? Then we can also use it to run the thread_atexit notifiers and avoid the bug that Peter reported for OS X. Paolo
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