From: Wu Zhangjin Date: Fri, 6 Nov 2009 10:45:06 +0000 (+0800) Subject: MIPS: oprofile: Only do performance counter handling for counter interrupts X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=937893cf5be53203eabc6f4db29f86b1fdeea203;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git MIPS: oprofile: Only do performance counter handling for counter interrupts In Loongson2f IP6 is shared by bonito and perfcounters so we need to avoid do_IRQ for perfcounter when the interrupt is from bonito. Signed-off-by: Wu Zhangjin Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle --- diff --git a/arch/mips/oprofile/op_model_loongson2.c b/arch/mips/oprofile/op_model_loongson2.c index 575cd1473475..475ff46712ab 100644 --- a/arch/mips/oprofile/op_model_loongson2.c +++ b/arch/mips/oprofile/op_model_loongson2.c @@ -1,7 +1,7 @@ /* * Loongson2 performance counter driver for oprofile * - * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology + * Copyright (C) 2009 Lemote Inc. * Author: Yanhua * Author: Wu Zhangjin * @@ -125,6 +125,9 @@ static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id) */ /* Check whether the irq belongs to me */ + enabled = read_c0_perfcnt() & LOONGSON2_PERFCNT_INT_EN; + if (!enabled) + return IRQ_NONE; enabled = reg.cnt1_enabled | reg.cnt2_enabled; if (!enabled) return IRQ_NONE;