top(1): remove last vestiges of "last pid" support

millert@ removed most of the "last pid" support from top(1) in 1997.
See, e.g. top/machine.c,v1.7:

http://cvsweb.openbsd.org/src/usr.bin/top/machine.c?rev=1.7&content-type=text/x-cvsweb-markup

Let's remove the rest of it:

- Eliminate system_info.last_pid.

- Remove mpid parameter and "last pid" printing code from i_loadave().

Link: https://marc.info/?l=openbsd-tech&m=166277253606823&w=2

ok millert@

5 files changed, 8 insertions, 14 deletions

diff --git a/usr.bin/top/display.c b/usr.bin/top/display.c
index 3cc91fc2105..fdb726c8eba 100644
--- a/usr.bin/top/display.c
+++ b/usr.bin/top/display.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: display.c,v 1.66 2022/08/08 16:54:09 cheloha Exp $	 */
+/* $OpenBSD: display.c,v 1.67 2022/09/10 16:58:51 cheloha Exp $	 */
 
 /*
  *  Top users/processes display for Unix
@@ -234,7 +234,7 @@ format_uptime(char *buf, size_t buflen)
 
 
 void
-i_loadave(pid_t mpid, double *avenrun)
+i_loadave(double *avenrun)
 {
 	if (screen_length > 1 || !smart_terminal) {
 		int i;
@@ -243,10 +243,6 @@ i_loadave(pid_t mpid, double *avenrun)
 		clrtoeol();
 
 		addstrp("load averages");
-		/* mpid == -1 implies this system doesn't have an _mpid */
-		if (mpid != -1)
-			printwp("last pid: %5ld;  ", (long) mpid);
-
 		for (i = 0; i < 3; i++)
 			printwp("%c %5.2f", i == 0 ? ':' : ',', avenrun[i]);
 	}
diff --git a/usr.bin/top/display.h b/usr.bin/top/display.h
index 60374d8ddbc..29a74f8e00e 100644
--- a/usr.bin/top/display.h
+++ b/usr.bin/top/display.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: display.h,v 1.15 2018/11/17 23:10:08 cheloha Exp $	*/
+/*	$OpenBSD: display.h,v 1.16 2022/09/10 16:58:51 cheloha Exp $	*/
 
 /*
  *  Top users/processes display for Unix
@@ -35,7 +35,7 @@
 
 /* prototypes */
 int display_resize(void);
-void i_loadave(int, double *);
+void i_loadave(double *);
 void u_loadave(int, double *);
 void i_timeofday(time_t *);
 void i_procstates(int, int *, int);
diff --git a/usr.bin/top/machine.c b/usr.bin/top/machine.c
index 079560a8d3b..fbddbc172d3 100644
--- a/usr.bin/top/machine.c
+++ b/usr.bin/top/machine.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: machine.c,v 1.111 2022/02/22 17:35:01 deraadt Exp $	 */
+/* $OpenBSD: machine.c,v 1.112 2022/09/10 16:58:51 cheloha Exp $	 */
 
 /*-
  * Copyright (c) 1994 Thorsten Lockert <tholo@sigmasoft.com>
@@ -306,7 +306,6 @@ get_system_info(struct system_info *si)
 	si->cpustates = cpu_states;
 	si->cpuonline = cpu_online;
 	si->memory = memory_stats;
-	si->last_pid = -1;
 }
 
 static struct handle handle;
diff --git a/usr.bin/top/machine.h b/usr.bin/top/machine.h
index f051d99bad0..9082c81956f 100644
--- a/usr.bin/top/machine.h
+++ b/usr.bin/top/machine.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: machine.h,v 1.31 2020/08/26 16:21:28 kn Exp $	 */
+/* $OpenBSD: machine.h,v 1.32 2022/09/10 16:58:51 cheloha Exp $	 */
 
 /*
  *  Top users/processes display for Unix
@@ -49,7 +49,6 @@ struct statics {
  */
 
 struct system_info {
-	pid_t           last_pid;
 	double          load_avg[NUM_AVERAGES];
 	int             p_total;
 	int             p_active;	/* number of procs considered
diff --git a/usr.bin/top/top.c b/usr.bin/top/top.c
index 59c46bde594..c5267b17d3e 100644
--- a/usr.bin/top/top.c
+++ b/usr.bin/top/top.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: top.c,v 1.106 2020/08/26 16:21:28 kn Exp $	*/
+/*	$OpenBSD: top.c,v 1.107 2022/09/10 16:58:51 cheloha Exp $	*/
 
 /*
  *  Top users/processes display for Unix
@@ -560,7 +560,7 @@ restart:
 		    proc_compares[order_index]);
 
 		/* display the load averages */
-		i_loadave(system_info.last_pid, system_info.load_avg);
+		i_loadave(system_info.load_avg);
 
 		/* display the current time */
 		/* this method of getting the time SHOULD be fairly portable */