The example code he provides doesn't even compile: real_test.c: In function ‘main’: real_test.c:14:10: error: too many arguments to function ‘spin_al

The example code he provides doesn't even compile: real_test.c: In function ‘main’: real_test.c:14:10: error: too many arguments to function ‘spin_allocate’ spin-lock.h:20:32: note: declared here real_test.c:16:3: error: too few arguments to function ‘spin_lock’ spin-lock.h:19:13: note: declared here Easy to fix, just annoying.