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add -z flag to intrctl list, which elides all-zero rows.

This commit is contained in:
mrg 2019-09-23 20:15:31 +00:00
parent 2f5074a348
commit be571cf8e9
2 changed files with 37 additions and 12 deletions
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10
usr.sbin/intrctl/intrctl.8
View File

@ -1,4 +1,4 @@
.\" $NetBSD: intrctl.8,v 1.5 2019/09/23 09:17:19 mrg Exp $
.\" $NetBSD: intrctl.8,v 1.6 2019/09/23 20:15:31 mrg Exp $
.\"
.\" Copyright (c) 2015 Internet Initiative Japan Inc.
.\" All rights reserved.
@ -24,7 +24,7 @@
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
.Dd September 22, 2019
.Dd September 23, 2019
.Dt INTRCTL 8
.Os
.Sh NAME
@ -56,7 +56,7 @@ enable to set an interrupt's affinity to
If
.Ar cpu_index
is already enabled, this command has no effect.
.It list Oo Fl c Oc Op Fl w Ar wait
.It list Oo Fl c Oc Oo Fl w Ar wait Oc Op Fl z
for each intrid in the system, display interrupt counts per CPU.
The intrid is an interrupt name such as "ioapic0 pin 22" for x86.
.Pp
@ -72,6 +72,10 @@ is specified then
display the data continuously with a
.Ar wait
seconds delay between each iteration.
.Pp
If
.Fl z
is specified then rows with all CPUs having zero interrupts will be skipped.
.It nointr Fl c Ar cpu_index
disable to set an interrupt's affinity to
.Ar cpu_index .

39
usr.sbin/intrctl/intrctl.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: intrctl.c,v 1.9 2019/09/23 09:17:19 mrg Exp $ */
/* $NetBSD: intrctl.c,v 1.10 2019/09/23 20:15:31 mrg Exp $ */
/*
* Copyright (c) 2015 Internet Initiative Japan Inc.
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: intrctl.c,v 1.9 2019/09/23 09:17:19 mrg Exp $");
__RCSID("$NetBSD: intrctl.c,v 1.10 2019/09/23 20:15:31 mrg Exp $");
#include <sys/param.h>
#include <sys/sysctl.h>
@ -99,8 +99,9 @@ usage(void)
{
const char *progname = getprogname();
fprintf(stderr, "usage: %s list [-c] [-w secs]\n", progname);
fprintf(stderr, " %s affinity -i interrupt_name -c cpu_index\n", progname);
fprintf(stderr, "usage: %s list [-c] [-w secs] [-z]\n", progname);
fprintf(stderr, " %s affinity -i interrupt_name -c cpu_index\n",
progname);
fprintf(stderr, " %s intr -c cpu_index\n", progname);
fprintf(stderr, " %s nointr -c cpu_index\n", progname);
exit(EXIT_FAILURE);
@ -110,7 +111,7 @@ usage(void)
static int intrctl_io_alloc_retry_count = 4;
static void
intrctl_list_one(int compact)
intrctl_list_one(bool compact, bool skipzero)
{
char buf[64];
struct intrio_list_line *illine;
@ -169,6 +170,20 @@ intrctl_list_one(int compact)
illine = intrctl_io_nextline(handle, illine)) {
struct intrio_list_line_cpu *illc;
if (skipzero) {
bool is_zero = true;
for (i = 0; i < ncpus; i++) {
illc = &illine->ill_cpu[i];
if (illc->illc_count != 0) {
is_zero = false;
break;
}
}
if (is_zero)
continue;
}
printf("%-*s ", (int)intridlen, illine->ill_intrid);
if (compact) {
uint64_t total = 0;
@ -209,13 +224,17 @@ intrctl_list(int argc, char **argv)
{
int seconds = 0;
bool compact = false;
bool skipzero = false;
int ch;
while ((ch = getopt(argc, argv, "cw:")) != -1) {
while ((ch = getopt(argc, argv, "cw:z")) != -1) {
switch (ch) {
case 'c':
compact = true;
break;
case 'z':
skipzero = true;
break;
case 'w':
seconds = atoi(optarg);
if (seconds < 0)
@ -226,10 +245,12 @@ intrctl_list(int argc, char **argv)
}
}
do {
intrctl_list_one(compact);
for (;;) {
intrctl_list_one(compact, skipzero);
if (seconds == 0)
break;
sleep(seconds);
} while (seconds);
}
}
static void