From: Maarten Lankhorst Date: Thu, 27 Jun 2013 11:48:16 +0000 (+0200) Subject: reservation: cross-device reservation support, v4 X-Git-Tag: v3.11-rc1~65^2~50 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=786d7257e537da0674c02e16e3b30a44665d1cee;p=pandora-kernel.git 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 Reviewed-by: Jerome Glisse Signed-off-by: Dave Airlie --- Reading git-diff-tree failed