Messages in this thread | | | Date | Mon, 08 Jul 2013 07:34:48 -0700 | From | Dave Hansen <> | Subject | Re: [PATCH] perf: fix interrupt handler timing harness |
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On 07/04/2013 03:30 PM, Stephane Eranian wrote: > There was an misunderstanding on the API of the do_div() > macro. It returns the remainder of the division and this > was not what the function expected leading to disabling the > interrupt latency watchdog.
"Misunderstanding" is a very kind term for what I did there. Stephane, were you actually running in to the new cpu limit, or were you just trying to update kernel.perf_event_max_sample_rate?
BTW, I also did the same thing in 2ab00456:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2ab00456ea8a0d79acb1390659b98416111880b2
I'll have a patch out shortly for that one, but its damage would be limited to a bogus printk.
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