Messages in this thread | | | Subject | Re: How is user space notified of CPU speed changes? | Date | Sat, 23 Oct 2004 11:53:54 +0100 | From | Matthew Garrett <> |
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Lee Revell <rlrevell@joe-job.com> wrote: > On Fri, 2004-10-22 at 12:23 +0100, Alan Cox wrote: >> No it did not. It has never been a safe assumption. > > OK, thanks. Still no answer to my original question though. > > JACK makes extensive use of microsecond-level timers. These must be > calibrated at startup, and recalibrated when the CPU speed changes. How > does JACK register with the kernel to be notified when the CPU speed > changes?
The kernel does not always know when the CPU speed changes. This makes notification somewhat harder.
-- Matthew Garrett | mjg59-chiark.mail.linux-rutgers.kernel@srcf.ucam.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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