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MIPS: Loongson-3: Adjust irq dispatch to speedup processing 

This patch adjust the logic in mach_irq_dispatch(), allow multiple IPs
handled in the same dispatching. This can speedup interrupt processing.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Steven J . Hill <sjhill@realitydiluted.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12891/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Huacai Chen 2016-03-17 20:41:07 +08:00 committed by Ralf Baechle
parent d051472824
commit 24653515e5
1 changed files with 6 additions and 4 deletions
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10
arch/mips/loongson64/loongson-3/irq.c
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@ -24,19 +24,21 @@ static void ht_irqdispatch(void)
}
}
#define UNUSED_IPS (CAUSEF_IP5 | CAUSEF_IP4 | CAUSEF_IP1 | CAUSEF_IP0)
void mach_irq_dispatch(unsigned int pending)
{
if (pending & CAUSEF_IP7)
do_IRQ(LOONGSON_TIMER_IRQ);
#if defined(CONFIG_SMP)
else if (pending & CAUSEF_IP6)
if (pending & CAUSEF_IP6)
loongson3_ipi_interrupt(NULL);
#endif
else if (pending & CAUSEF_IP3)
if (pending & CAUSEF_IP3)
ht_irqdispatch();
else if (pending & CAUSEF_IP2)
if (pending & CAUSEF_IP2)
do_IRQ(LOONGSON_UART_IRQ);
else {
if (pending & UNUSED_IPS) {
pr_err("%s : spurious interrupt\n", __func__);
spurious_interrupt();
}