Uptime on arm64 not being computed correctly

[stevecapperlinaro]

Hi, We are getting uptime values based off of jiffies values in crash. Unfortunately, on arm64, the CPU frequency is assumed to be 100Hz and this causes unrealistic uptimes to be reported.

Is it possible to follow the kernel approach to computing uptime from, get_monotonic_boottime(.), with something like: uptime in nano-seconds = (tk_core->timekeeper->tkr_mono->base + tk_core->timekeeper->offs_boot) From: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/kernel/time/timekeeping.c?h=v4.12#n782

Cheers, Steve

[crash-utility]

----- Original Message -----

Hi, We are getting uptime values based off of jiffies values in crash. Unfortunately, on arm64, the CPU frequency is assumed to be 100Hz and this causes unrealistic uptimes to be reported.

Is it possible to follow the kernel approach to computing uptime from, get_monotonic_boottime(.), with something like: uptime in nano-seconds = (tk_core->timekeeper->tkr_mono->base + tk_core->timekeeper->offs_boot) From: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/kernel/time/timekeeping.c?h=v4.12#n782

Cheers, Steve

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Thanks, Dave