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