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Diffstat (limited to 'arch/mips/oprofile')
-rw-r--r--arch/mips/oprofile/op_model_mipsxx.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/arch/mips/oprofile/op_model_mipsxx.c b/arch/mips/oprofile/op_model_mipsxx.c
index 42821ae2d77e..01f721a85c5b 100644
--- a/arch/mips/oprofile/op_model_mipsxx.c
+++ b/arch/mips/oprofile/op_model_mipsxx.c
@@ -11,6 +11,7 @@
#include <linux/interrupt.h>
#include <linux/smp.h>
#include <asm/irq_regs.h>
+#include <asm/time.h>
#include "op_impl.h"
@@ -35,6 +36,7 @@
#define M_PERFCTL_COUNT_ALL_THREADS (1UL << 13)
static int (*save_perf_irq)(void);
+static int perfcount_irq;
/*
* XLR has only one set of counters per core. Designate the
@@ -431,8 +433,16 @@ static int __init mipsxx_init(void)
save_perf_irq = perf_irq;
perf_irq = mipsxx_perfcount_handler;
- if ((cp0_perfcount_irq >= 0) && (cp0_compare_irq != cp0_perfcount_irq))
- return request_irq(cp0_perfcount_irq, mipsxx_perfcount_int,
+ if (get_c0_perfcount_int)
+ perfcount_irq = get_c0_perfcount_int();
+ else if ((cp0_perfcount_irq >= 0) &&
+ (cp0_compare_irq != cp0_perfcount_irq))
+ perfcount_irq = MIPS_CPU_IRQ_BASE + cp0_perfcount_irq;
+ else
+ perfcount_irq = -1;
+
+ if (perfcount_irq >= 0)
+ return request_irq(perfcount_irq, mipsxx_perfcount_int,
0, "Perfcounter", save_perf_irq);
return 0;
@@ -442,8 +452,8 @@ static void mipsxx_exit(void)
{
int counters = op_model_mipsxx_ops.num_counters;
- if ((cp0_perfcount_irq >= 0) && (cp0_compare_irq != cp0_perfcount_irq))
- free_irq(cp0_perfcount_irq, save_perf_irq);
+ if (perfcount_irq >= 0)
+ free_irq(perfcount_irq, save_perf_irq);
counters = counters_per_cpu_to_total(counters);
on_each_cpu(reset_counters, (void *)(long)counters, 1);