Add __io_lock() and __io_unlock() functions to lock io functions#67

Open

gwtsivasiva wants to merge 2 commits intompaland:masterfrom

gwtsivasiva:add_lock_functions

Commits on Dec 19, 2019

Add __io_lock() and __io_unlock() functions to lock io functions such as printf in order to avoid collision between multiple threads/cores.
gwtsivasiva
committed
Add flags to enable lock/unlock in printf
gwtsivasiva
committed