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Diffstat (limited to 'arch/blackfin/kernel/irqchip.c')
-rw-r--r--arch/blackfin/kernel/irqchip.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/irqchip.c b/arch/blackfin/kernel/irqchip.c
index 1fc001c7abd..462ae41144c 100644
--- a/arch/blackfin/kernel/irqchip.c
+++ b/arch/blackfin/kernel/irqchip.c
@@ -34,6 +34,7 @@
#include <linux/kallsyms.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
+#include <asm/trace.h>
static unsigned long irq_err_count;
static spinlock_t irq_controller_lock;
@@ -144,4 +145,12 @@ void __init init_IRQ(void)
}
init_arch_irq();
+
+#ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND
+ /* Now that evt_ivhw is set up, turn this on */
+ trace_buff_offset = 0;
+ bfin_write_TBUFCTL(BFIN_TRACE_ON);
+ printk(KERN_INFO "Hardware Trace expanded to %ik\n",
+ 1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN);
+#endif
}