Re: [patch] fix the softlockup watchdog to actually work

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



* Jeremy Fitzhardinge <[email protected]> wrote:

> Hm, or more specifically, why would that be a problem for softlockup? 
> Do you mean it doesn't measure time during ACPI idle?  That would just 
> make it trigger later than it would otherwise.

no, the return value after idling can be completely random on some 
boxes, on a 64-bit scale - triggering the softlockup watchdog randomly. 
(some boxes return random TSC values, etc.) Again, it's fine for the 
scheduler's purpose, that's why i named it sched_clock().

the proper clocksource use within the kernel is ktime_get() [or 
ktime_get_ts()]. Do not abuse sched_clock() for such things.

	Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux