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Commit 937893cf authored by Wu Zhangjin's avatar Wu Zhangjin Committed by Ralf Baechle
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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: default avatarWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent a3ed4951

arch/mips/oprofile/op_model_loongson2.c

+4 −1
Original line number Diff line number Diff line 
/*

 * Loongson2 performance counter driver for oprofile

 *

 * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology

 * Copyright (C) 2009 Lemote Inc.

 * Author: Yanhua <yanh@lemote.com>

 * Author: Wu Zhangjin <wuzj@lemote.com>

 *
@@ -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;