diff --git a/include/common/hathreads.h b/include/common/hathreads.h
index b3c4564..1042c26 100644
--- a/include/common/hathreads.h
+++ b/include/common/hathreads.h
@@ -51,6 +51,9 @@
 
 extern struct thread_info {
 	clockid_t clock_id;
+	uint64_t prev_cpu_time;    /* previous per thread CPU time */
+	uint64_t prev_mono_time;   /* previous system wide monotonic time  */
+	unsigned int idle_pct;     /* idle to total ratio over last sample (percent) */
 	/* pad to cache line (64B) */
 	char __pad[0];            /* unused except to check remaining room */
 	char __end[0] __attribute__((aligned(64)));
@@ -382,6 +385,9 @@
 extern struct thread_info {
 	pthread_t pthread;
 	clockid_t clock_id;
+	uint64_t prev_cpu_time;    /* previous per thread CPU time */
+	uint64_t prev_mono_time;   /* previous system wide monotonic time  */
+	unsigned int idle_pct;     /* idle to total ratio over last sample (percent) */
 	/* pad to cache line (64B) */
 	char __pad[0];            /* unused except to check remaining room */
 	char __end[0] __attribute__((aligned(64)));