From 59c115798430f644b43123250ae4e1d820c3c18d Mon Sep 17 00:00:00 2001 From: John Crispin Date: Wed, 2 May 2012 12:27:37 +0200 Subject: MIPS: lantiq: enable oprofile support on lantiq targets This patch sets the performance counters irq on Lantiq SoCs. Signed-off-by: John Crispin Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3720/ Signed-off-by: Ralf Baechle --- arch/mips/lantiq/irq.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/mips/lantiq') diff --git a/arch/mips/lantiq/irq.c b/arch/mips/lantiq/irq.c index b6b1c7260c5c..bfd4ad180aac 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 */ @@ -316,6 +319,9 @@ 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 + + /* tell oprofile which irq to use */ + cp0_perfcount_irq = LTQ_PERF_IRQ; } unsigned int __cpuinit get_c0_compare_int(void) -- cgit v1.2.3-59-g8ed1b