On Mon, 2023-03-06 at 22:10 -0500, Joel Fernandes wrote: > On Mon, Mar 6, 2023 at 10:08 PM Joe Perches <joe@xxxxxxxxxxx> wrote: > > > > On Tue, 2023-03-07 at 03:04 +0000, Joel Fernandes (Google) wrote: > > > Single-argument kvfree_rcu() usage is being deprecated [1] [2] as it is > > > error-prone. However, till all users are converted, we would like to introduce > > > checkpatch errors for new patches submitted. > > > > > > This patch adds support for the same. Tested with a trial patch. > > > > > > For now, we are only considering usages that don't have compound > > > nesting, for example ignore: kvfree_rcu( (rcu_head_obj), rcu_head_name). > > > This is sufficient as such usages are unlikely. > > > > > > Once all users are converted and we remove the old API, we can also revert this > > > checkpatch patch then. > > > > I think this should be added to the deprecated_apis hash instead > > > > our %deprecated_apis = ( > > "synchronize_rcu_bh" => "synchronize_rcu", > > "synchronize_rcu_bh_expedited" => "synchronize_rcu_expedited", > > "call_rcu_bh" => "call_rcu", > > "rcu_barrier_bh" => "rcu_barrier", > > "synchronize_sched" => "synchronize_rcu", > > "synchronize_sched_expedited" => "synchronize_rcu_expedited", > > "call_rcu_sched" => "call_rcu", > > "rcu_barrier_sched" => "rcu_barrier", > > "get_state_synchronize_sched" => "get_state_synchronize_rcu", > > "cond_synchronize_sched" => "cond_synchronize_rcu", > > "kmap" => "kmap_local_page", > > "kunmap" => "kunmap_local", > > "kmap_atomic" => "kmap_local_page", > > "kunmap_atomic" => "kunmap_local", > > ); > > This is not an API name change though, it is a "number of arguments" > or argument list change. Is there a different way to do it? Ah, no, not really. btw: I don't see a single use of this call without a comma in the tree.
