On 2018年10月22日 16:34, Chris Wilson wrote:
Quoting Chunming Zhou (2018-10-21 12:14:24)
v2:
add a mutex between sync_cb execution and free.
The result would appear to be that syncobj->lock is relegated to
protecting the pt_list and the mutex would only be needed for the
syncobj->cb_list.
The patch looks correct for resolving the deadlock and avoiding
introducing any new fails, but I do wonder if
spinlock_t pt_lock;
struct mutex cb_mutex;
and clearly separating the roles would not be a better approach.
good idea, thanks,
-David
-Chris
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