top: address the missing 'guest' tics for summary area

Well this is embarrassing. After repeatedly flogging a
horse (represented by issue #274) I was certain it was
dead. But, it turns out that the darn thing yet lived.

In fact, the bug that was patched was not even the one
the poster experienced. Now merge request #173 finally
penetrated my foggy brain and explicated the real bug.

Since forever (linux 2.6), top has ignored those guest
and guest_nice fields in /proc/stat. When many virtual
machines were running that overhead went unrecognized.

So, this commit simply adds those tics to the 'system'
figures so that it can be seen in text or graph modes.

Reference(s):
https://gitlab.com/procps-ng/procps/-/merge_requests/173

https://gitlab.com/procps-ng/procps/-/issues/274
. Mar 2023, avoid keystroke '%Cpu' distortions
commit 7e33fc47c6

Signed-off-by: Jim Warner <james.warner@comcast.net>

src/top/top.c

@@ -286,6 +286,7 @@ static enum stat_item Stat_items[] = {
    STAT_TIC_DELTA_NICE,     STAT_TIC_DELTA_IDLE,
    STAT_TIC_DELTA_IOWAIT,   STAT_TIC_DELTA_IRQ,
    STAT_TIC_DELTA_SOFTIRQ,  STAT_TIC_DELTA_STOLEN,
+   STAT_TIC_DELTA_GUEST,    STAT_TIC_DELTA_GUEST_NICE,
    STAT_TIC_SUM_DELTA_USER, STAT_TIC_SUM_DELTA_SYSTEM,
 #ifdef CORE_TYPE_NO
    STAT_TIC_SUM_DELTA_TOTAL };
@@ -298,6 +299,7 @@ enum Rel_statitems {
    stat_NI, stat_IL,
    stat_IO, stat_IR,
    stat_SI, stat_ST,
+   stat_GU, stat_GN,
    stat_SUM_USR, stat_SUM_SYS,
 #ifdef CORE_TYPE_NO
    stat_SUM_TOT };
@@ -6340,6 +6342,11 @@ static int sum_tics (struct stat_stack *this, const char *pfx, int nobuf) {
    if (1 > tot_frme) idl_frme = tot_frme = 1;
    scale = 100.0 / (float)tot_frme;
 
+   /* account for VM tics not otherwise provided for ...
+      ( with xtra-procps-debug.h, can't use PID_VAL w/ assignment ) */
+   this->head[stat_SY].result.sl_int += rSv(stat_GU) + rSv(stat_GN);
+   this->head[stat_SUM_SYS].result.sl_int += rSv(stat_GU) + rSv(stat_GN);
+
    /* display some kinda' cpu state percentages
       (who or what is explained by the passed prefix) */
    if (Curwin->rc.graph_cpus) {