diff --git a/os/rt/include/ch.h b/os/rt/include/ch.h
index 76bd021af..a6b719de7 100644
--- a/os/rt/include/ch.h
+++ b/os/rt/include/ch.h
@@ -98,10 +98,10 @@
 /* Base kernel headers.*/
 #include "chtypes.h"
 #include "chearly.h"
-#include "chlists.h"
-#include "chalign.h"
 #include "chdebug.h"
 #include "chtime.h"
+#include "chlists.h"
+#include "chalign.h"
 #include "chtrace.h"
 #include "chport.h"
 #include "chtm.h"
diff --git a/os/rt/include/chlists.h b/os/rt/include/chlists.h
index 39e274da8..f6d043ad4 100644
--- a/os/rt/include/chlists.h
+++ b/os/rt/include/chlists.h
@@ -83,9 +83,24 @@ typedef struct ch_priority_queue ch_priority_queue_t;
  * @note    Link fields are void pointers in order to avoid aliasing issues.
  */
 struct ch_priority_queue {
-  ch_priority_queue_t   *next;      /**< @brief Next in the list/queue.     */
+  ch_priority_queue_t   *next;      /**< @brief Next in the queue.          */
   ch_priority_queue_t   *prev;      /**< @brief Previous in the queue.      */
-  tprio_t               prio;
+  tprio_t               prio;       /**< @brief Priority of this element.   */
+};
+
+/**
+ * @brief   Type of a generic bidirectional linked delta list
+ *          header and element.
+ */
+typedef struct ch_delta_list ch_delta_list_t;
+
+/**
+ * @brief   Delta list element and header structure.
+ */
+struct ch_delta_list {
+  ch_delta_list_t       *next;      /**< @brief Next in the delta list.     */
+  ch_delta_list_t       *prev;      /**< @brief Previous in the delta list. */
+  sysinterval_t         delta;      /**< @brief Time interval from previous.*/
 };
 
 /*===========================================================================*/
@@ -401,6 +416,143 @@ static inline ch_priority_queue_t *ch_pqueue_insert_ahead(ch_priority_queue_t *p
   return p;
 }
 
+/**
+ * @brief   Delta list initialization.
+ *
+ * @param[out] dlp     pointer to the delta list header
+ *
+ * @notapi
+ */
+static inline void ch_dlist_init(ch_delta_list_t *dlhp) {
+
+  dlhp->next  = dlhp;
+  dlhp->prev  = dlhp;
+  dlhp->delta = (sysinterval_t)-1;
+}
+
+/**
+ * @brief   Evaluates to @p true if the specified delta list is empty.
+ *
+ * @param[in] dlhp      pointer to the delta list header
+ * @return              The status of the delta list.
+ *
+ * @notapi
+ */
+static inline bool ch_dlist_isempty(ch_delta_list_t *dlhp) {
+
+  return (bool)(dlhp == dlhp->next);
+}
+
+/**
+ * @brief   Evaluates to @p true if the specified queue is not empty.
+ *
+ * @param[in] dlhp      pointer to the delta list header
+ * @return              The status of the delta list.
+ *
+ * @notapi
+ */
+static inline bool ch_dlist_notempty(ch_delta_list_t *dlhp) {
+
+  return (bool)(dlhp != dlhp->next);
+}
+
+/**
+ * @brief   Last element in the delta list check.
+ *
+ * @param[in] dlhp      pointer to the delta list header
+ * @param[in] dlp       pointer to the delta list element
+ *
+ * @notapi
+ */
+static inline bool ch_dlist_islast(ch_delta_list_t *dlhp,
+                                   ch_delta_list_t *dlp) {
+
+  return (bool)(dlp->next == dlhp);
+}
+
+/**
+ * @brief   Fist element in the delta list check.
+ *
+ * @param[in] dlhp      pointer to the delta list header
+ * @param[in] dlp       pointer to the delta list element
+ *
+ * @notapi
+ */
+static inline bool ch_dlist_isfirst(ch_delta_list_t *dlhp,
+                                    ch_delta_list_t *dlp) {
+
+  return (bool)(dlhp->next == dlp);
+}
+
+/**
+ * @brief   Inserts an element after another header element.
+ *
+ * @param[in] dlhp      pointer to the delta list header element
+ * @param[in] dlp       element to be inserted after the header element
+ *
+ * @notapi
+ */
+static inline void ch_dlist_insert_after(ch_delta_list_t *dlhp,
+                                         ch_delta_list_t *dlp,
+                                         sysinterval_t delta) {
+
+  dlp->delta      = delta;
+  dlp->prev       = dlhp;
+  dlp->next       = dlp->prev->next;
+  dlp->next->prev = dlp;
+  dlhp->next      = dlp;
+}
+
+/**
+ * @brief   Inserts an element before another header element.
+ *
+ * @param[in] dlhp      pointer to the delta list header element
+ * @param[in] dlp       element to be inserted before the header element
+ *
+ * @notapi
+ */
+static inline void ch_dlist_insert_before(ch_delta_list_t *dlhp,
+                                          ch_delta_list_t *dlp,
+                                          sysinterval_t delta) {
+
+  dlp->delta      = delta;
+  dlp->next       = dlhp;
+  dlp->prev       = dlp->next->prev;
+  dlp->prev->next = dlp;
+  dlhp->prev      = dlp;
+}
+
+/**
+ * @brief   Dequeues an element from the delta list.
+ *
+ * @param[in] dlhp      pointer to the delta list header
+ *
+ * @notapi
+ */
+static inline ch_delta_list_t *ch_dlist_remove_first(ch_delta_list_t *dlhp) {
+  ch_delta_list_t *dlp = dlhp->next;
+
+  dlhp->next       = dlp->next;
+  dlhp->next->prev = dlhp;
+
+  return dlp;
+}
+
+/**
+ * @brief   Dequeues an element from the delta list.
+ *
+ * @param[in] dlp       pointer to the delta list element
+ *
+ * @notapi
+ */
+static inline ch_delta_list_t *ch_dlist_dequeue(ch_delta_list_t *dlp) {
+
+  dlp->prev->next = dlp->next;
+  dlp->next->prev = dlp->prev;
+
+  return dlp;
+}
+
 #endif /* CHLISTS_H */
 
 /** @} */
diff --git a/os/rt/include/chobjects.h b/os/rt/include/chobjects.h
index 66ea8dccd..6a6e3acdb 100644
--- a/os/rt/include/chobjects.h
+++ b/os/rt/include/chobjects.h
@@ -59,29 +59,6 @@ typedef enum {
  */
 typedef void (*vtfunc_t)(void *p);
 
-/**
- * @brief   Type of a Virtual Timer structure.
- */
-typedef struct ch_delta_list delta_list_t;
-
-/**
- * @brief   Virtual Timer delta list element and header structure.
- */
-struct ch_delta_list {
-  /**
-   * @brief   Next timer in the list.
-   */
-  delta_list_t                  *next;
-  /**
-   * @brief   Previous timer in the list.
-   */
-  delta_list_t                  *prev;
-  /**
-   * @brief   Time delta before timeout.
-   */
-  sysinterval_t                 delta;
-};
-
 /**
  * @brief   Type of a Virtual Timer.
  */
@@ -89,7 +66,7 @@ typedef struct ch_virtual_timer {
   /**
    * @brief   Delta list element.
    */
-  delta_list_t                  dlist;
+  ch_delta_list_t               dlist;
   /**
    * @brief   Timer callback function pointer.
    */
@@ -114,7 +91,7 @@ typedef struct ch_virtual_timers_list {
   /**
    * @brief   Delta list header.
    */
-  delta_list_t                  dlist;
+  ch_delta_list_t               dlist;
 #if (CH_CFG_ST_TIMEDELTA == 0) || defined(__DOXYGEN__)
   /**
    * @brief   System Time counter.
@@ -142,7 +119,7 @@ typedef struct ch_registry {
   /**
    * @brief   Registry queue header.
    */
-  ch_queue_t                  queue;
+  ch_queue_t                    queue;
 } registry_t;
 
 /**
diff --git a/os/rt/include/chvt.h b/os/rt/include/chvt.h
index d72b92a3d..5c0506475 100644
--- a/os/rt/include/chvt.h
+++ b/os/rt/include/chvt.h
@@ -215,7 +215,7 @@ static inline bool chVTIsSystemTimeWithin(systime_t start, systime_t end) {
  */
 static inline bool chVTGetTimersStateI(sysinterval_t *timep) {
   virtual_timers_list_t *vtlp = &currcore->vtlist;
-  delta_list_t *dlp = &vtlp->dlist;
+  ch_delta_list_t *dlp = &vtlp->dlist;
 
   chDbgCheckClassI();
 
@@ -510,9 +510,7 @@ static inline void chVTResetTimeStamp(void) {
  */
 static inline void __vt_object_init(virtual_timers_list_t *vtlp) {
 
-  vtlp->dlist.next  = &vtlp->dlist;
-  vtlp->dlist.prev  = &vtlp->dlist;
-  vtlp->dlist.delta = (sysinterval_t)-1;
+  ch_dlist_init(&vtlp->dlist);
 #if CH_CFG_ST_TIMEDELTA == 0
   vtlp->systime = (systime_t)0;
 #else /* CH_CFG_ST_TIMEDELTA > 0 */
diff --git a/os/rt/src/chsys.c b/os/rt/src/chsys.c
index 6cf782bc8..ae1ba39a9 100644
--- a/os/rt/src/chsys.c
+++ b/os/rt/src/chsys.c
@@ -283,7 +283,7 @@ bool chSysIntegrityCheckI(unsigned testmask) {
 
   /* Timers list integrity check.*/
   if ((testmask & CH_INTEGRITY_VTLIST) != 0U) {
-    delta_list_t *dlp;
+    ch_delta_list_t *dlp;
 
     /* Scanning the timers list forward.*/
     n = (cnt_t)0;
diff --git a/os/rt/src/chvt.c b/os/rt/src/chvt.c
index 8a6990827..d992329e8 100644
--- a/os/rt/src/chvt.c
+++ b/os/rt/src/chvt.c
@@ -48,45 +48,7 @@
 /* Module local functions.                                                   */
 /*===========================================================================*/
 
-/**
- * @brief   List empty check.
- *
- * @param[in] dlhp      pointer to the delta list header
- *
- * @notapi
- */
-static inline bool is_vtlist_empty(delta_list_t *dlhp) {
-
-  return (bool)(dlhp == dlhp->next);
-}
-
 #if (CH_CFG_ST_TIMEDELTA > 0) || defined(__DOXYGEN__)
-/**
- * @brief   Last timer in the list check.
- *
- * @param[in] dlhp      pointer to the delta list header
- * @param[in] dlp       pointer to the delta list element
- *
- * @notapi
- */
-static inline bool is_last_timer(delta_list_t *dlhp, delta_list_t *dlp) {
-
-  return (bool)(dlp->next == dlhp);
-}
-
-/**
- * @brief   Fist timer in the list check.
- *
- * @param[in] dlhp      pointer to the delta list header
- * @param[in] dlp       pointer to the delta list element
- *
- * @notapi
- */
-static inline bool is_first_timer(delta_list_t *dlhp, delta_list_t *dlp) {
-
-  return (bool)(dlhp->next == dlp);
-}
-
 /**
  * @brief   Timer check.
  *
@@ -95,64 +57,11 @@ static inline bool is_first_timer(delta_list_t *dlhp, delta_list_t *dlp) {
  *
  * @notapi
  */
-static inline bool is_timer(delta_list_t *dlhp, delta_list_t *dlp) {
+static inline bool is_timer(ch_delta_list_t *dlhp, ch_delta_list_t *dlp) {
 
   return (bool)(dlp != dlhp);
 }
 
-/**
- * @brief   Dequeues an element from the delta list.
- *
- * @param[in] dlp       pointer to the delta list element
- *
- * @notapi
- */
-static delta_list_t *dlist_dequeue(delta_list_t *dlp) {
-
-  dlp->prev->next = dlp->next;
-  dlp->next->prev = dlp->prev;
-
-  return dlp;
-}
-
-/**
- * @brief   Dequeues an element from the delta list.
- *
- * @param[in] dlhp      pointer to the delta list header
- *
- * @notapi
- */
-static delta_list_t *dlist_remove_first(delta_list_t *dlhp) {
-  delta_list_t *dlp = dlhp->next;
-
-  dlhp->next       = dlp->next;
-  dlhp->next->prev = dlhp;
-
-  return dlp;
-}
-
-static void dlist_insert_after(delta_list_t *dlhp,
-                               delta_list_t *dlp,
-                               sysinterval_t delta) {
-
-  dlp->delta      = delta;
-  dlp->prev       = dlhp;
-  dlp->next       = dlp->prev->next;
-  dlp->next->prev = dlp;
-  dlhp->next      = dlp;
-}
-
-static void dlist_insert_before(delta_list_t *dlhp,
-                                delta_list_t *dlp,
-                                sysinterval_t delta) {
-
-  dlp->delta      = delta;
-  dlp->next       = dlhp;
-  dlp->prev       = dlp->next->prev;
-  dlp->prev->next = dlp;
-  dlhp->prev      = dlp;
-}
-
 /**
  * @brief   Delta list compression.
  *
@@ -163,7 +72,7 @@ static void dlist_insert_before(delta_list_t *dlhp,
  */
 static void vt_list_compress(virtual_timers_list_t *vtlp,
                              sysinterval_t deltanow) {
-  delta_list_t *dlp = vtlp->dlist.next;
+  ch_delta_list_t *dlp = vtlp->dlist.next;
 
   vtlp->lasttime = chTimeAddX(vtlp->lasttime, deltanow);
 
@@ -192,7 +101,7 @@ static void vt_enqueue(virtual_timers_list_t *vtlp,
                        virtual_timer_t *vtp,
                        systime_t now,
                        sysinterval_t delay) {
-  delta_list_t *dlp;
+  ch_delta_list_t *dlp;
   sysinterval_t delta;
 
 #if CH_CFG_ST_TIMEDELTA > 0
@@ -206,12 +115,12 @@ static void vt_enqueue(virtual_timers_list_t *vtlp,
     }
 
     /* Special case where the timers list is empty.*/
-    if (is_vtlist_empty(&vtlp->dlist)) {
+    if (ch_dlist_isempty(&vtlp->dlist)) {
 
       /* The delta list is empty, the current time becomes the new
          delta list base time, the timer is inserted.*/
       vtlp->lasttime = now;
-      dlist_insert_after(&vtlp->dlist, &vtp->dlist, delay);
+      ch_dlist_insert_after(&vtlp->dlist, &vtp->dlist, delay);
 
 #if CH_CFG_INTERVALS_SIZE > CH_CFG_ST_RESOLUTION
       /* The delta could be too large for the physical timer to handle.*/
@@ -271,7 +180,7 @@ static void vt_enqueue(virtual_timers_list_t *vtlp,
   }
 
   /* The timer is inserted in the delta list.*/
-  dlist_insert_before(dlp, &vtp->dlist, delta);
+  ch_dlist_insert_before(dlp, &vtp->dlist, delta);
 
   /* Calculate new delta for the following entry.*/
   dlp->delta -= delta;
@@ -401,10 +310,10 @@ void chVTDoResetI(virtual_timer_t *vtp) {
 
   /* If the timer is not the first of the list then it is simply unlinked
      else the operation is more complex.*/
-  if (!is_first_timer(&vtlp->dlist, &vtp->dlist)) {
+  if (!ch_dlist_isfirst(&vtlp->dlist, &vtp->dlist)) {
 
     /* Removing the element from the delta list.*/
-    dlist_dequeue(&vtp->dlist);
+    ch_dlist_dequeue(&vtp->dlist);
 
     /* Adding delta to the next element, if it is not the last one.*/
     if (is_timer(&vtlp->dlist, vtp->dlist.next)) {
@@ -418,11 +327,11 @@ void chVTDoResetI(virtual_timer_t *vtp) {
   }
 
   /* Removing the first timer from the list, marking it as not armed.*/
-  dlist_remove_first(&vtlp->dlist);
+  ch_dlist_remove_first(&vtlp->dlist);
   vtp->dlist.next = NULL;
 
   /* If the list become empty then the alarm timer is stopped and done.*/
-  if (is_vtlist_empty(&vtlp->dlist)) {
+  if (ch_dlist_isempty(&vtlp->dlist)) {
     port_timer_stop_alarm();
 
     return;
@@ -474,7 +383,7 @@ void chVTDoResetI(virtual_timer_t *vtp) {
 sysinterval_t chVTGetRemainingIntervalI(virtual_timer_t *vtp) {
   virtual_timers_list_t *vtlp = &currcore->vtlist;
   sysinterval_t deadline;
-  delta_list_t *dlp;
+  ch_delta_list_t *dlp;
 
   chDbgCheckClassI();
 
@@ -534,7 +443,7 @@ void chVTDoTickI(void) {
     }
   }
 #else /* CH_CFG_ST_TIMEDELTA > 0 */
-  delta_list_t *dlp;
+  ch_delta_list_t *dlp;
   sysinterval_t delta, nowdelta;
   systime_t now;
 
@@ -563,11 +472,11 @@ void chVTDoTickI(void) {
     chDbgAssert((int)chTimeDiffX(vtlp->lasttime, now) >= 0, "back in time");
 
     /* Removing the timer from the list, marking it as not armed.*/
-    dlist_dequeue(dlp);
+    ch_dlist_dequeue(dlp);
     dlp->next = NULL;
 
     /* If the list becomes empty then the timer is stopped.*/
-    if (is_vtlist_empty(&vtlp->dlist)) {
+    if (ch_dlist_isempty(&vtlp->dlist)) {
       port_timer_stop_alarm();
     }
 
@@ -602,7 +511,7 @@ void chVTDoTickI(void) {
   }
 
   /* If the list is empty, nothing else to do.*/
-  if (is_vtlist_empty(&vtlp->dlist)) {
+  if (ch_dlist_isempty(&vtlp->dlist)) {
     return;
   }