force_sig(SIGFPE, tsk);
}
-BUILD_TRAP_HANDLER(fpu_state_restore)
+void fpu_state_restore(struct pt_regs *regs)
{
struct task_struct *tsk = current;
- TRAP_HANDLER_DECL;
grab_fpu(regs);
- if (!user_mode(regs)) {
+ if (unlikely(!user_mode(regs))) {
printk(KERN_ERR "BUG: FPU is used in kernel mode.\n");
+ BUG();
return;
}
- if (used_math()) {
+ if (likely(used_math())) {
/* Using the FPU again. */
restore_fpu(tsk);
} else {
set_used_math();
}
set_tsk_thread_flag(tsk, TIF_USEDFPU);
+ tsk->fpu_counter++;
+}
+
+BUILD_TRAP_HANDLER(fpu_state_restore)
+{
+ TRAP_HANDLER_DECL;
+
+ fpu_state_restore(regs);
}