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Diffstat (limited to 'target/linux/generic/patches-3.3/307-mips_oprofile_fix.patch')
-rw-r--r--target/linux/generic/patches-3.3/307-mips_oprofile_fix.patch35
1 files changed, 35 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.3/307-mips_oprofile_fix.patch b/target/linux/generic/patches-3.3/307-mips_oprofile_fix.patch
new file mode 100644
index 0000000..f83c96b
--- /dev/null
+++ b/target/linux/generic/patches-3.3/307-mips_oprofile_fix.patch
@@ -0,0 +1,35 @@
+--- a/arch/mips/oprofile/op_model_mipsxx.c
++++ b/arch/mips/oprofile/op_model_mipsxx.c
+@@ -298,6 +298,11 @@ static void reset_counters(void *arg)
+ }
+ }
+
++static irqreturn_t mipsxx_perfcount_int(int irq, void *dev_id)
++{
++ return mipsxx_perfcount_handler();
++}
++
+ static int __init mipsxx_init(void)
+ {
+ int counters;
+@@ -374,6 +379,10 @@ static int __init mipsxx_init(void)
+ save_perf_irq = perf_irq;
+ perf_irq = mipsxx_perfcount_handler;
+
++ if (cp0_perfcount_irq >= 0)
++ return request_irq(cp0_perfcount_irq, mipsxx_perfcount_int,
++ IRQF_SHARED, "Perfcounter", save_perf_irq);
++
+ return 0;
+ }
+
+@@ -381,6 +390,9 @@ static void mipsxx_exit(void)
+ {
+ int counters = op_model_mipsxx_ops.num_counters;
+
++ if (cp0_perfcount_irq >= 0)
++ free_irq(cp0_perfcount_irq, save_perf_irq);
++
+ counters = counters_per_cpu_to_total(counters);
+ on_each_cpu(reset_counters, (void *)(long)counters, 1);
+