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    SubjectRe: /proc 2.6.24 changes for guest CPU accounting
    On Mon, Jun 23, 2008 at 10:48 AM, Laurent Vivier
    <> wrote:
    > Le dimanche 22 juin 2008 à 09:31 +0200, Michael Kerrisk a écrit :
    >> Hi Laurent,
    > Hi Michael,
    >> A note and patch from Samuel alerted me to your commits
    >> 9ac52315d4cf5f561f36dabaf0720c00d3553162 and
    >> 5e84cfde51cf303d368fcb48f22059f37b3872de, which in 2.6.24 changed /proc/stat
    >> and /proc/PID/stat. Would you please CC me on kernel-userspace interface
    >> changes, so that they have a chance of getting documented in man-pages.
    >> (I see that Andrew P tried to get something added to
    >> Documentation/filesystems/proc.txt, but that doesn't seem to have made it in.)
    >> Below is a patch against the proc.5 man page by Samuel and I to document these
    >> changes. Do the changes look okay to you? The first part is the change for
    >> /proc/<pid>/stat, and the other is for /proc/stat.
    > Thank you for that. It seems correct to me (except a typo).
    > You must also notes that "user time" includes "guest time", if you want
    > real "user time" you must subtract "guest time".
    > The "guest time" is included in "user time" to not loose it when the
    > "reader" is not aware of the "guest time".

    Hi Laurent (and Christian)

    So, I just want to confirm. You are saying that guest_time and
    cguest_time are respectively also included in the following fields

    utime %lu
    The number of jiffies that this process has been
    scheduled in user mode.


    cutime %ld
    The number of jiffies that this process's waited-
    for children have been scheduled in user mode.
    (See also times(2).)


    (In fs/proc/array.c, those are the two lines from



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