coresight: Remove function coresight_vpid_to_pid()
Now that we prevent users from using contextID tracing when PID namespaces
are involved there is no client for function coresight_vpid_to_pid(). As
such simply remove it.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Kim Phillips <kim.phillips@arm.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index c265e04..e5421b8 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -267,24 +267,4 @@
struct device *dev, const 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