[PATCH RFC V9 7/19] x86/pvticketlock: Use callee-save for lock_spinning

x86/pvticketlock: Use callee-save for lock_spinning From: Jeremy Fitzhardinge Although the lock_spinning calls in the spinlock code are on the uncommon path, their presence can cause the compiler to generate many more register save/restores in the function pre/postamble, which is in the fast

[PATCH RFC V9 7/19] x86/pvticketlock: Use callee-save for lock_spinning

x86/pvticketlock: Use callee-save for lock_spinning From: Jeremy Fitzhardinge jeremy.fitzhardi...@citrix.com Although the lock_spinning calls in the spinlock code are on the uncommon path, their presence can cause the compiler to generate many more register save/restores in the function