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Add more precision to the cx_usage sysctl output and special-case 0%.

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Submitted by:	YONETANI Tomokazu <qhwt+freebsd-acpi AT les.ath.cx>
This commit is contained in:
Nate Lawson 2004-06-19 02:27:23 +00:00
parent da6400271b
commit 3e7fa136ea
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=130704
1 changed files with 11 additions and 5 deletions
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16
sys/dev/acpica/acpi_cpu.c
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@ -1046,15 +1046,21 @@ acpi_cpu_usage_sysctl(SYSCTL_HANDLER_ARGS)
struct sbuf sb;
char buf[128];
int i;
u_int sum;
uint64_t fract, sum, whole;
/* Avoid divide by 0 potential error. */
sum = 1;
sum = 0;
for (i = 0; i < cpu_cx_count; i++)
sum += cpu_cx_stats[i];
sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
for (i = 0; i < cpu_cx_count; i++)
sbuf_printf(&sb, "%u%% ", (cpu_cx_stats[i] * 100) / sum);
for (i = 0; i < cpu_cx_count; i++) {
if (sum > 0) {
whole = cpu_cx_stats[i] * 100;
fract = (whole % sum) * 100;
sbuf_printf(&sb, "%u.%02u%% ", (u_int)(whole / sum),
(u_int)(fract / sum));
} else
sbuf_printf(&sb, "0%% ");
}
sbuf_trim(&sb);
sbuf_finish(&sb);
sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);