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-rw-r--r--arch/arm/kernel/etm.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/kernel/etm.c b/arch/arm/kernel/etm.c
index 33c7077..11db628 100644
--- a/arch/arm/kernel/etm.c
+++ b/arch/arm/kernel/etm.c
@@ -30,6 +30,21 @@
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Alexander Shishkin");
+/*
+ * ETM tracer state
+ */
+struct tracectx {
+ unsigned int etb_bufsz;
+ void __iomem *etb_regs;
+ void __iomem *etm_regs;
+ unsigned long flags;
+ int ncmppairs;
+ int etm_portsz;
+ struct device *dev;
+ struct clk *emu_clk;
+ struct mutex mutex;
+};
+
static struct tracectx tracer;
static inline bool trace_isrunning(struct tracectx *t)
@@ -314,6 +329,7 @@ static const struct file_operations etb_fops = {
.read = etb_read,
.open = etb_open,
.release = etb_release,
+ .llseek = no_llseek,
};
static struct miscdevice etb_miscdev = {
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