Messages in this thread | | | From | "Jason A. Donenfeld" <> | Date | Thu, 13 Jun 2019 18:41:36 +0200 | Subject | Re: infinite loop in read_hpet from ktime_get_boot_fast_ns |
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Or in case that's not clear enough:
int __init mod_init(void) { u64 j1 = 0, j2, k1 = 0, k2, l1 = 0, l2; for (;;) { j2 = jiffies64_to_nsecs(get_jiffies_64()); k2 = ktime_get_coarse_boottime(); l2 = local_clock(); pr_err("%llu %llu %llu\n", j2 - j1, k2 - k1, l2 - l1); j1 = j2; k1 = k2; l1 = l2; msleep(200); } return 0; }
[ 0.289469] wireguard: 17179569424000000 18446744073155127569 289468886 [ 0.495002] wireguard: 208000000 1000000000 205528400 [ 0.702857] wireguard: 208000000 0 207855129 [ 0.910836] wireguard: 208000000 0 207979087 [ 1.118871] wireguard: 208000000 0 208034819 [ 1.326964] wireguard: 208000000 0 208093122 [ 1.534941] wireguard: 208000000 1000000000 207976614 [ 1.742868] wireguard: 208000000 0 207927167 [ 1.950877] wireguard: 208000000 0 208009538 [ 2.158865] wireguard: 208000000 0 207987922 [ 2.367012] wireguard: 208000000 0 208146016 [ 2.574931] wireguard: 208000000 1000000000 207918184 [ 2.782871] wireguard: 208000000 0 207939645 [ 2.991017] wireguard: 208000000 0 208148426 [ 3.198943] wireguard: 208000000 0 207925281 [ 3.406959] wireguard: 208000000 0 208014262 [ 3.614892] wireguard: 208000000 1000000000 207934524 [ 3.822869] wireguard: 208000000 0 207976970 [ 4.030994] wireguard: 208000000 0 208125835 [ 4.238792] wireguard: 208000000 0 207800186 [ 4.446853] wireguard: 208000000 0 208056350 [ 4.654978] wireguard: 208000000 1000000000 208126753 [ 4.862801] wireguard: 208000000 0 207822955 [ 5.070999] wireguard: 208000000 0 208198517 [ 5.278818] wireguard: 208000000 0 207820902 [ 5.486879] wireguard: 208000000 1000000000 208059285 [ 5.694959] wireguard: 208000000 0 208066514 [ 5.903011] wireguard: 208000000 0 208065258 [ 6.111015] wireguard: 208000000 0 208004056 [ 6.318856] wireguard: 208000000 0 207841271
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