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From: "agentzh at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug tapsets/26397] New: Modern kernels no longer use cputime for
 task->utime and task->stime
Date: Sun, 16 Aug 2020 20:09:00 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D26397

            Bug ID: 26397
           Summary: Modern kernels no longer use cputime for task->utime
                    and task->stime
           Product: systemtap
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tapsets
          Assignee: systemtap at sourceware dot org
          Reporter: agentzh at gmail dot com
  Target Milestone: ---

The task_time_string() tapset function assumes task->{utime,stime} to be
cputime (or jiffies), which leads to very wrong results being returned. Mod=
ern
kernels already use nanoseconds for these two fields.

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