[Bug tapsets/3279] timer.profile broken on Xen kernels

[joshua dot i dot stone at intel dot com]

------- Additional Comments From joshua dot i dot stone at intel dot com  2006-09-29 01:04 -------
On Xen kernels, the callback registration for timer.profile is successful (via
register_timer_hook), but it never gets called because profile_tick is never called.

If anyone really needs this, you can approximate the same functionality like so:

  function __set_regs(regs:long) %{
      CONTEXT->regs = (struct pt_regs *)(long)THIS->regs;
  %}
  probe fake.timer.profile = kernel.function("timer_interrupt") {
      __set_regs($regs)
  }

... but this has much higher overhead.  It would be nicer to find a patch for
Xen so that it calls profile_tick properly.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|timer.profile broken on     |timer.profile broken on Xen
                   |2.6.18 x86_64               |kernels


http://sourceware.org/bugzilla/show_bug.cgi?id=3279

------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.