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author | Maarten Lankhorst <m.b.lankhorst@gmail.com> | 2013-06-27 13:48:16 +0200 |
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committer | Dave Airlie <airlied@redhat.com> | 2013-06-28 12:02:15 +1000 |
commit | 786d7257e537da0674c02e16e3b30a44665d1cee (patch) | |
tree | 005686710f85aa8e5626c0849f7a539a18875779 /sound/oss/sequencer.c | |
parent | 8ade2b8281d58a8336a1742a44ceffd9d07d6629 (diff) | |
download | linux-786d7257e537da0674c02e16e3b30a44665d1cee.tar.gz |
reservation: cross-device reservation support, v4
This adds support for a generic reservations framework that can be hooked up to ttm and dma-buf and allows easy sharing of reservations across devices. The idea is that a dma-buf and ttm object both will get a pointer to a struct reservation_object, which has to be reserved before anything is done with the contents of the dma-buf. Changes since v1: - Fix locking issue in ticket_reserve, which could cause mutex_unlock to be called too many times. Changes since v2: - All fence related calls and members have been taken out for now, what's left is the bare minimum to be useful for ttm locking conversion. Changes since v3: - Removed helper functions too. The documentation has an example implementation for locking. With the move to ww_mutex there is no need to have much logic any more. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'sound/oss/sequencer.c')
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