Messages in this thread | | | Date | Tue, 29 Apr 2014 16:32:40 +0200 | From | Maarten Lankhorst <> | Subject | Re: [RFC PATCH 2/2 with seqcount v3] reservation: add suppport for read-only access using rcu |
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op 23-04-14 13:15, Maarten Lankhorst schreef: > This adds 4 more functions to deal with rcu. > > reservation_object_get_fences_rcu() will obtain the list of shared > and exclusive fences without obtaining the ww_mutex. > > reservation_object_wait_timeout_rcu() will wait on all fences of the > reservation_object, without obtaining the ww_mutex. > > reservation_object_test_signaled_rcu() will test if all fences of the > reservation_object are signaled without using the ww_mutex. > > reservation_object_get_excl() is added because touching the fence_excl > member directly will trigger a sparse warning. > > Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> > --- > Using seqcount and fixing some lockdep bugs. > Changes since v2: > - Fix some crashes, remove some unneeded barriers when provided by seqcount writes > - Fix code to work correctly with sparse's RCU annotations. > - Create a global string for the seqcount lock to make lockdep happy. > > Can I get this version reviewed? If it looks correct I'll mail the full series > because it's intertwined with the TTM conversion to use this code. Ping, can anyone review this?
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