[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] net: xen-netbank: hash.c: Use built-in RCU list checking
On Wed, Jan 15, 2020 at 07:36:38PM +0530, Madhuparna Bhowmik wrote: [...] > > > The surrounding code makes it pretty clear that the lock is already held > > by the time list_for_each_entry_rcu is called, yet the checking involved > > in lockdep_is_held is not trivial, so I'm afraid I don't consider this a > > strict improvement over the existing code. > > > > Actually, we want to make CONFIG_PROVE_LIST_RCU enabled by default. I think you meant CONFIG_PROVE_RCU_LIST. > And if the cond argument is not passed when the usage of > list_for_each_entry_rcu() > is outside of rcu_read_lock(), it will lead to a false positive. > Therefore, I think this patch is required. Fair enough. Wei. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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