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authorAhmed S. Darwish <a.darwish@linutronix.de>2020-07-20 17:55:17 +0200
committerPeter Zijlstra <peterz@infradead.org>2020-07-29 16:14:25 +0200
commit318ce71f3e3ae4108c1665f3860afa8a2a4c9f02 (patch)
treef14151319fc5982781cbe4dd22a85ca1637437ee /drivers/gpu/drm/amd/amdgpu
parentec8702da570ebb59f38471007bf71359c51b027b (diff)
dma-buf: Remove custom seqcount lockdep class key
Commit 3c3b177a9369 ("reservation: add support for read-only access using rcu") introduced a sequence counter to manage updates to reservations. Back then, the reservation object initializer reservation_object_init() was always inlined. Having the sequence counter initialization inlined meant that each of the call sites would have a different lockdep class key, which would've broken lockdep's deadlock detection. The aforementioned commit thus introduced, and exported, a custom seqcount lockdep class key and name. The commit 8735f16803f00 ("dma-buf: cleanup reservation_object_init...") transformed the reservation object initializer to a normal non-inlined C function. seqcount_init(), which automatically defines the seqcount lockdep class key and must be called non-inlined, can now be safely used. Remove the seqcount custom lockdep class key, name, and export. Use seqcount_init() inside the dma reservation object initializer. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://lkml.kernel.org/r/20200720155530.1173732-12-a.darwish@linutronix.de
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu')
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