[Bug tapsets/15466] New: add fallback for timer.profile on kernels without register_timer_hook()

[smakarov at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15466

             Bug #: 15466
           Summary: add fallback for timer.profile on kernels without
                    register_timer_hook()
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: tapsets
        AssignedTo: systemtap@sourceware.org
        ReportedBy: smakarov@redhat.com
    Classification: Unclassified


Recent kernels have taken out the register_timer_hook() mechanism. Until a
suitable tracepoint is added back, timer.profile should be changed to an alias
that falls back to something roughly equivalent like perf.sw.cpu_clock. (The
actual underlying probe point should be renamed something like
timer.profile.tick.)

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