These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / include / linux / coresight.h

diff --git a/kernel/include/linux/coresight.h b/kernel/include/linux/coresight.h
index 3486b90..a7cabfa 100644 (file)
--- a/kernel/include/linux/coresight.h
+++ b/kernel/include/linux/coresight.h
@@ -14,6 +14,7 @@
 #define _LINUX_CORESIGHT_H
 
 #include <linux/device.h>
+#include <linux/sched.h>
 
 /* Peripheral id registers (0xFD0-0xFEC) */
 #define CORESIGHT_PERIPHIDR4   0xfd0
@@ -206,7 +207,7 @@ struct coresight_ops_link {
  * Operations available for sources.
  * @trace_id:  returns the value of the component's trace ID as known
                to the HW.
- * @enable:    enables tracing from a source.
+ * @enable:    enables tracing for a source.
  * @disable:   disables tracing for a source.
  */
 struct coresight_ops_source {
@@ -248,4 +249,24 @@ static inline struct coresight_platform_data *of_get_coresight_platform_data(
        struct device *dev, struct device_node *node) { return NULL; }
 #endif
 
+#ifdef CONFIG_PID_NS
+static inline unsigned long
+coresight_vpid_to_pid(unsigned long vpid)
+{
+       struct task_struct *task = NULL;
+       unsigned long pid = 0;
+
+       rcu_read_lock();
+       task = find_task_by_vpid(vpid);
+       if (task)
+               pid = task_pid_nr(task);
+       rcu_read_unlock();
+
+       return pid;
+}
+#else
+static inline unsigned long
+coresight_vpid_to_pid(unsigned long vpid) { return vpid; }
+#endif
+
 #endif