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    SubjectRe: [PATCH] i386 tsc: remove xtime_lock'ing around cpufreq notifier
    On Thu, 12 Apr 2007 10:43:03 -0700
    Jeremy Fitzhardinge <jeremy@goop.org> wrote:

    > Andrew Morton wrote:
    > > hm. People (ab)use sched_clock() for all sorts of things nowadays. I wouldn't
    > > do anything to degrade it just on behalf of printk-timestamping.
    > >
    >
    > printk was the only non-scheduler-ish use I could find. Are there others?
    >

    blktrace. I've seen a couple of trace/debug-style things which use
    sched_clock for timestamping event collection. I think lttng does exotic
    things with TSCs, performing private skew correction, although that might
    have changed now.
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