> Use __this_cpu_try_cmpxchg() instead of > __this_cpu_cmpxchg (*ptr, old, new) == old in > preload_this_cpu_lock(). x86 CMPXCHG instruction returns > success in ZF flag, so this change saves a compare after cmpxchg. > Just a small note. Can you also add a tiny difference in assembly language where it is visible? I mean update a commit message. -- Uladzislau Rezki
