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Code Issues Releases Activity

x86/tsc.c: Add TSLOG to test_tsc

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On my benchmark system this takes ~ 14 ms; enough to be worth
recording in the boot time profile.
This commit is contained in:
Colin Percival 2021-09-09 17:01:00 -07:00
parent d780a23a99
commit cd165c8bf0
1 changed files with 2 additions and 0 deletions
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2
sys/x86/x86/tsc.c
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@ -511,6 +511,7 @@ test_tsc(int adj_max_count)
if (vm_guest == VM_GUEST_VBOX)
return (0);
TSENTER();
size = (mp_maxid + 1) * 3;
data = malloc(sizeof(*data) * size * N, M_TEMP, M_WAITOK);
adj = 0;
@ -531,6 +532,7 @@ test_tsc(int adj_max_count)
printf("SMP: %sed TSC synchronization test%s\n",
smp_tsc ? "pass" : "fail",
adj > 0 ? " after adjustment" : "");
TSEXIT();
if (smp_tsc && tsc_is_invariant) {
switch (cpu_vendor_id) {
case CPU_VENDOR_AMD: