Re: Capturing load average from within systemtap script...

[Eugene Teo <eugeneteo at kernel dot sg>]

<quote sender="Rick Beldin">
> Hi... 
> 
> I'm still having troubles - this time with embedded C code to access
> avenrun.   After modifying the code (pardon the mess): 
> 
> global timer_count
> global x1
> global x2
> global x3
> 
> // avenrun declared as extern long int avenrun[3] in sched.h
> %{
> #include <linux/timer.h>
> %}
> function get_avenrun:long (idx:long) %{ /* pure */
>     if (idx < 0 || idx > 2) return 0;
>         else return avenrun[idx];
> %}

Change it to:

if (THIS->idx < 0 || THIS->idx > 2) THIS->__retvalue = 0;
	else THIS->__retvalue = avenrun[THIS->idx];

Thanks,
Eugene