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Use the quality to disable timecounters for which we deem Hz too low.

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This commit is contained in:
Poul-Henning Kamp 2003-09-03 08:14:16 +00:00
parent 753374dad4
commit c679c73452
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=119716
1 changed files with 10 additions and 6 deletions
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16
sys/kern/kern_tc.c
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@ -288,16 +288,20 @@ tc_init(struct timecounter *tc)
{
unsigned u;
if (tc->tc_quality >= 0 || bootverbose)
u = tc->tc_frequency / tc->tc_counter_mask;
if (u > hz && tc->tc_quality >= 0) {
tc->tc_quality = -2000;
if (bootverbose) {
printf("Timecounter \"%s\" frequency %ju Hz",
tc->tc_name, (intmax_t)tc->tc_frequency);
printf(" -- Insufficient hz, needs at least %u\n", u);
}
} else if (tc->tc_quality >= 0 || bootverbose) {
printf("Timecounter \"%s\" frequency %ju Hz quality %d",
tc->tc_name, (intmax_t)tc->tc_frequency,
tc->tc_quality);
u = tc->tc_frequency / tc->tc_counter_mask;
if (u > hz) {
printf(" -- Insufficient hz, needs at least %u\n", u);
return;
}
printf("\n");
tc->tc_next = timecounters;
timecounters = tc;