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powerpc: partly merge iseries do_IRQ

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Hide some of the iseries details in iSeries_get_irq.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
This commit is contained in:
Stephen Rothwell
2005-11-16 18:53:29 +11:00
committed by Paul Mackerras
parent 853f828cfd
commit e199500c62
4 changed files with 45 additions and 66 deletions
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73
arch/powerpc/kernel/irq.c
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@@ -78,10 +78,6 @@ EXPORT_SYMBOL(__irq_offset_value);
static int ppc_spurious_interrupts;
#if defined(CONFIG_PPC_ISERIES) && defined(CONFIG_SMP)
extern void iSeries_smp_message_recv(struct pt_regs *);
#endif
#ifdef CONFIG_PPC32
#define NR_MASK_WORDS ((NR_IRQS + 31) / 32)
@@ -195,49 +191,6 @@ void fixup_irqs(cpumask_t map)
}
#endif
#ifdef CONFIG_PPC_ISERIES
void do_IRQ(struct pt_regs *regs)
{
struct paca_struct *lpaca;
irq_enter();
#ifdef CONFIG_DEBUG_STACKOVERFLOW
/* Debugging check for stack overflow: is there less than 2KB free? */
{
long sp;
sp = __get_SP() & (THREAD_SIZE-1);
if (unlikely(sp < (sizeof(struct thread_info) + 2048))) {
printk("do_IRQ: stack overflow: %ld\n",
sp - sizeof(struct thread_info));
dump_stack();
}
}
#endif
lpaca = get_paca();
#ifdef CONFIG_SMP
if (lpaca->lppaca.int_dword.fields.ipi_cnt) {
lpaca->lppaca.int_dword.fields.ipi_cnt = 0;
iSeries_smp_message_recv(regs);
}
#endif /* CONFIG_SMP */
if (hvlpevent_is_pending())
process_hvlpevents(regs);
irq_exit();
if (lpaca->lppaca.int_dword.fields.decr_int) {
lpaca->lppaca.int_dword.fields.decr_int = 0;
/* Signal a fake decrementer interrupt */
timer_interrupt(regs);
}
}
#else /* CONFIG_PPC_ISERIES */
void do_IRQ(struct pt_regs *regs)
{
int irq;
@@ -286,16 +239,24 @@ void do_IRQ(struct pt_regs *regs)
} else
#endif
__do_IRQ(irq, regs);
} else
#ifdef CONFIG_PPC32
if (irq != -2)
#endif
/* That's not SMP safe ... but who cares ? */
ppc_spurious_interrupts++;
irq_exit();
}
} else if (irq != -2)
/* That's not SMP safe ... but who cares ? */
ppc_spurious_interrupts++;
#endif /* CONFIG_PPC_ISERIES */
irq_exit();
#ifdef CONFIG_PPC_ISERIES
{
struct paca_struct *lpaca = get_paca();
if (lpaca->lppaca.int_dword.fields.decr_int) {
lpaca->lppaca.int_dword.fields.decr_int = 0;
/* Signal a fake decrementer interrupt */
timer_interrupt(regs);
}
}
#endif
}
void __init init_IRQ(void)
{