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    SubjectRe: [RFC] [PATCH 0/5] Teach perf tool to profile sleep times (V4)
    On 6/4/12 1:09 AM, Andrew Vagin wrote:
    > * "sched/tracing: Add a new tracepoint for sleeptime" by Arun Sharma
    > It has been committed, but then reverted due to performance reason.

    Correctness actually. The first sample could potentially be bogus and
    needs to be discarded in userspace. Hasn't been a problem in practice
    for us.


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