2009/10/26 Wu Zhangjin <wuzhangjin@xxxxxxxxx>:
> ooh, Sorry, only this patch added(I stopped after fixing the compiling
> errors, no more check! so lazy a guy!).
>
> Just checked the source code of MIPS, the do_IRQ() is defined as a
> macro, so, I must move the macro to a C file, and also, there is a
> irq_enter...irq_exit block in a "big" function, I need to split it out.
>
> [...]
> /*
> * do_IRQ handles all normal device IRQ's (the special
> * SMP cross-CPU interrupts have their own specific
> * handlers).
> *
> * Ideally there should be away to get this into kernel/irq/handle.c to
> * avoid the overhead of a call for just a tiny function ...
> */
> #define do_IRQ(irq)
> \
> do {
> \
> irq_enter();
> \
> __DO_IRQ_SMTC_HOOK(irq);
> \
> generic_handle_irq(irq);
> \
> irq_exit();
> \
> } while (0)
> [...]
>
> But The comment told us: do not make this tiny function be a standalone
> function, so???
I can't check that currently. But may be the caller of this m
>
> the same to do_IRQ_no_affinity.
>
> and, about the following function, I need to split the
> irq_enter()...irq_exit() block out.
>
> void ipi_decode(struct smtc_ipi *pipi)
> {
> [...]
> switch (type_copy) {
> case SMTC_CLOCK_TICK:
> irq_enter();
> kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq));
> cd = &per_cpu(mips_clockevent_device, cpu);
> cd->event_handler(cd);
> irq_exit();
> break;
>
> case LINUX_SMP_IPI:
> switch ((int)arg_copy) {
> case SMP_RESCHEDULE_YOURSELF:
> ipi_resched_interrupt();
> break;
> case SMP_CALL_FUNCTION:
> ipi_call_interrupt();
> break;
> [...]
>
> Regards,
> Wu Zhangjin
>
>
