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-rw-r--r--kernel/rcu/tree_stall.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/kernel/rcu/tree_stall.h b/kernel/rcu/tree_stall.h
index c0b8c458d8a6..f18adaf3bf39 100644
--- a/kernel/rcu/tree_stall.h
+++ b/kernel/rcu/tree_stall.h
@@ -279,6 +279,28 @@ static void print_cpu_stall_fast_no_hz(char *cp, int cpu)
#endif /* #else #ifdef CONFIG_RCU_FAST_NO_HZ */
+static const char * const gp_state_names[] = {
+ [RCU_GP_IDLE] = "RCU_GP_IDLE",
+ [RCU_GP_WAIT_GPS] = "RCU_GP_WAIT_GPS",
+ [RCU_GP_DONE_GPS] = "RCU_GP_DONE_GPS",
+ [RCU_GP_ONOFF] = "RCU_GP_ONOFF",
+ [RCU_GP_INIT] = "RCU_GP_INIT",
+ [RCU_GP_WAIT_FQS] = "RCU_GP_WAIT_FQS",
+ [RCU_GP_DOING_FQS] = "RCU_GP_DOING_FQS",
+ [RCU_GP_CLEANUP] = "RCU_GP_CLEANUP",
+ [RCU_GP_CLEANED] = "RCU_GP_CLEANED",
+};
+
+/*
+ * Convert a ->gp_state value to a character string.
+ */
+static const char *gp_state_getname(short gs)
+{
+ if (gs < 0 || gs >= ARRAY_SIZE(gp_state_names))
+ return "???";
+ return gp_state_names[gs];
+}
+
/*
* Print out diagnostic information for the specified stalled CPU.
*