commit b96514926b8ec7d98c36c4943df452b73bcc04a4
author Jens Wiklander <jens.wiklander@linaro.org> Mon Nov 11 10:11:45 2019 +0100
committer Jérôme Forissier <jerome@forissier.org> Thu Nov 14 15:18:21 2019 +0100
tree b426f545502480decd8b1c3a6b30d47c35cdb2f7
parent 8800b01d9f13a104b1c042de0c2106dedac38547

core: reference count struct mobj

The mobj interface is changed to use reference counting of mobjs, the
direct mobj_free() call is replaced by mobj_put(). As expected a
mobj_get() is also added to handle multiple references to the same mobj.

This also changes already present reference counting in struct
mobj_reg_shm to use the reference counting mechanism now available in
struct mobj.

The VM_FLAG_EXCLUSIVE_MOBJ flag is removed since the referenced mobj is
put instead when a struct vm_region is removed.

Tested-by: Jerome Forissier <jerome@forissier.org> (HiKey960)
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>