1 /* defines for inline arch setup functions */
3 #include <asm/fixmap.h>
6 static inline void do_timer_interrupt_hook(struct pt_regs *regs)
8 /* Clear the interrupt */
9 co_cpu_write(CO_CPU_STAT,co_cpu_read(CO_CPU_STAT) & ~CO_STAT_TIMEINTR);
13 update_process_times(user_mode(regs));
16 * In the SMP case we use the local APIC timer interrupt to do the
17 * profiling, except when we simulate SMP mode on a uniprocessor
18 * system, in that case we have to call the local interrupt handler.
20 #ifndef CONFIG_X86_LOCAL_APIC
21 profile_tick(CPU_PROFILING, regs);
23 if (!using_apic_timer)
24 smp_local_timer_interrupt(regs);
28 static inline int do_timer_overflow(int count)
32 spin_lock(&i8259A_lock);
34 * This is tricky when I/O APICs are used;
35 * see do_timer_interrupt().
38 spin_unlock(&i8259A_lock);
40 /* assumption about timer being IRQ0 */
43 * We cannot detect lost timer interrupts ...
44 * well, that's why we call them lost, don't we? :)
45 * [hmm, on the Pentium and Alpha we can ... sort of]
49 printk("do_slow_gettimeoffset(): hardware timer problem?\n");