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| author | Wu Zhangjin <wuzhangjin@gmail.com> | 2009-11-06 18:45:06 +0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-12-17 01:57:10 +0000 |
| commit | 937893cf5be53203eabc6f4db29f86b1fdeea203 (patch) | |
| tree | f629e3985a8234237c2335cc1e5e06c14a4c763c /arch | |
| parent | a3ed495190ebe918f4584291ed8c76f1c97a84fd (diff) | |
| download | blackbird-op-linux-937893cf5be53203eabc6f4db29f86b1fdeea203.tar.gz blackbird-op-linux-937893cf5be53203eabc6f4db29f86b1fdeea203.zip | |
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 <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/oprofile/op_model_loongson2.c | 5 |
1 files changed, 4 insertions, 1 deletions
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 <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; |
