TIF_FOREIGN_FPSTATE
#define _TIF_FOREIGN_FPSTATE (1 << TIF_FOREIGN_FPSTATE)
if (!test_thread_flag(TIF_FOREIGN_FPSTATE)) {
if (!test_thread_flag(TIF_FOREIGN_FPSTATE)) {
set_thread_flag(TIF_FOREIGN_FPSTATE);
update_tsk_thread_flag(next, TIF_FOREIGN_FPSTATE,
clear_thread_flag(TIF_FOREIGN_FPSTATE);
if (test_and_clear_thread_flag(TIF_FOREIGN_FPSTATE)) {
set_tsk_thread_flag(t, TIF_FOREIGN_FPSTATE);
if (test_thread_flag(TIF_FOREIGN_FPSTATE))
clear_thread_flag(TIF_FOREIGN_FPSTATE);
if (test_thread_flag(TIF_FOREIGN_FPSTATE))