When a thread sends commands to the SMMU, it needs to allocate some
space to write its commands in a ring buffer.
The allocation algorithms works as follows: until enough free spaced is
available in the queue, repeat the following outer loop. First, try to
acquire an exclusive lock to read the
When a thread sends commands to the SMMU, it needs to allocate some
space to write its commands in a ring buffer.
The allocation algorithms works as follows: until enough free spaced is
available in the queue, repeat the following outer loop. First, try to
acquire an exclusive lock to read the
