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Dynamically adapt to smp mode at runtime. This stops the cpu column

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appearing on uniprocessor systems since the smp->current merge.
This commit is contained in:
Peter Wemm 1997-07-12 10:51:54 +00:00
parent f88ef34060
commit 94154ff82b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=27340
1 changed files with 24 additions and 22 deletions
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46
usr.bin/top/machine.c
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@ -17,7 +17,7 @@
* Steven Wallace <swallace@freebsd.org>
* Wolfram Schneider <wosch@FreeBSD.org>
*
* $Id: machine.c,v 1.2 1997/04/19 20:28:50 peter Exp $
* $Id: machine.c,v 1.3 1997/04/21 13:53:47 ache Exp $
*/
@ -53,6 +53,7 @@ static int check_nlist __P((struct nlist *));
static int getkval __P((unsigned long, int *, int, char *));
extern char* printable __P((char *));
int swapmode __P((int *retavail, int *retfree));
static int smpmode;
@ -119,27 +120,22 @@ static struct nlist nlst[] = {
* These definitions control the format of the per-process area
*/
#ifdef P_IDLEPROC /* FreeBSD SMP kernel */
static char header[] =
static char smp_header[] =
" PID X PRI NICE SIZE RES STATE C TIME WCPU CPU COMMAND";
/* 0123456 -- field to fill in starts at header+6 */
#define UNAME_START 6
#define SMP_UNAME_START 6
#define Proc_format \
#define smp_Proc_format \
"%5d %-16.16s%3d%3d%7s %6s %-6.6s%1x%7s %5.2f%% %5.2f%% %.6s"
#else /* Standard kernel */
static char header[] =
static char up_header[] =
" PID X PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND";
/* 0123456 -- field to fill in starts at header+6 */
#define UNAME_START 6
#define UP_UNAME_START 6
#define Proc_format \
"%5d %-16.16s%3d %3d%7s %6s %-6.6s%7s %5.2f%% %5.2f%% %.6s"
#define up_Proc_format \
"%5d %-16.16s%3d %3d%7s %6s %-6.6s%.0d%7s %5.2f%% %5.2f%% %.6s"
#endif
/* process state names for the "STATE" column of the display */
@ -238,6 +234,12 @@ struct statics *statics;
{
register int i = 0;
register int pagesize;
int modelen;
modelen = sizeof(smpmode);
if (sysctlbyname("kern.smp_active", &smpmode, &modelen, NULL, 0) < 0 ||
modelen != sizeof(smpmode))
smpmode = 0;
if ((kd = kvm_open(NULL, NULL, NULL, O_RDONLY, "kvm_open")) == NULL)
return -1;
@ -310,13 +312,17 @@ register char *uname_field;
{
register char *ptr;
ptr = header + UNAME_START;
if (smpmode)
ptr = smp_header + SMP_UNAME_START;
else
ptr = up_header + UP_UNAME_START;
while (*uname_field != '\0')
{
*ptr++ = *uname_field++;
}
return(header);
return(smpmode ? smp_header : up_header);
}
static int swappgsin = -1;
@ -560,11 +566,9 @@ char *(*get_userid)();
/* generate "STATE" field */
switch (PP(pp, p_stat)) {
case SRUN:
#ifdef P_IDLEPROC /* FreeBSD SMP kernel */
if (PP(pp, p_oncpu) >= 0)
if (smpmode && PP(pp, p_oncpu) >= 0)
sprintf(status, "CPU%d", PP(pp, p_oncpu));
else
#endif
strcpy(status, "RUN");
break;
case SSLEEP:
@ -580,7 +584,7 @@ char *(*get_userid)();
/* format this entry */
sprintf(fmt,
Proc_format,
smpmode ? smp_Proc_format : up_Proc_format,
PP(pp, p_pid),
(*get_userid)(EP(pp, e_pcred.p_ruid)),
PP(pp, p_priority) - PZERO,
@ -588,9 +592,7 @@ char *(*get_userid)();
format_k2(pagetok(PROCSIZE(pp))),
format_k2(pagetok(VP(pp, vm_rssize))),
status,
#ifdef P_IDLEPROC /* FreeBSD SMP kernel */
PP(pp, p_lastcpu),
#endif
smpmode ? PP(pp, p_lastcpu) : 0,
format_time(cputime),
10000.0 * weighted_cpu(pct, pp) / hz,
10000.0 * pct / hz,