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From cc4b9cdff8665a414ae51101d3a0ca6ed7444a27 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Wed, 24 Aug 2011 13:28:55 +0200
Subject: [PATCH 10/24] MIPS: enable oprofile support on lantiq targets
This patch sets the performance counters irq and HAVE_OPROFILE flag.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
---
arch/mips/Kconfig | 1 +
arch/mips/lantiq/irq.c | 5 +++++
2 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index b122adc..0cf5bbd 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -230,6 +230,7 @@ config LANTIQ
select SWAP_IO_SPACE
select BOOT_RAW
select HAVE_CLK
+ select HAVE_OPROFILE
select MIPS_MACHINE
config LASAT
diff --git a/arch/mips/lantiq/irq.c b/arch/mips/lantiq/irq.c
index 17c057f..0b2ed87 100644
--- a/arch/mips/lantiq/irq.c
+++ b/arch/mips/lantiq/irq.c
@@ -40,6 +40,9 @@
#define MAX_EIU 6
+/* the performance counter */
+#define LTQ_PERF_IRQ (INT_NUM_IM4_IRL0 + 31)
+
/* irqs generated by device attached to the EBU need to be acked in
* a special manner
*/
@@ -318,6 +321,8 @@ void __init arch_init_irq(void)
set_c0_status(IE_SW0 | IE_SW1 | IE_IRQ0 | IE_IRQ1 |
IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5);
#endif
+
+ cp0_perfcount_irq = LTQ_PERF_IRQ;
}
unsigned int __cpuinit get_c0_compare_int(void)
--
1.7.5.4
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