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    SubjectRe: [GIT PATCH] TTY patches for 2.6.33-git
    Date
    Am Montag, 14. Dezember 2009 06:30:15 schrieb Arjan van de Ven:
    > > We have the bkl tracepoints for that, attaching an example below,
    > > blkdev_get/bkldev_put is among the highest consumer for me.
    >
    > we have a trace, but not a number that anyone can just pull out without
    > having to go through great lengths to set stuff up... (esp to capture a
    > boot)...
    > Adding a counter always to the lock_kernel function should be fine
    > instead...

    But don't we need to know how long it is held? If you just count
    you'll make code that drops it while it can look bad.

    Regards
    Oliver


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