[maemo-developers] Oprofile or Gprof working with toolchain cs2005q3.2-glibc-arm and bora?

From: David Levine levine at pv.com
Date: Tue Jul 3 21:50:29 EEST 2007
working on a Nokia N800 ---

Thanks to the good work by Barbieri, I've gotten oprofile installed and
running on my N800.

QUESTION/PROBLEM:  Daemon now reports an "Invalid argument" problem
opening the output files:

       oprofiled: open of /var/lib/oprofile/samples//current/{root}//bin/busybox/{dep}/{root}//lib/libc-2.3.6.so/CPU_CYCLES.10000.0.all.all.all failed: Invalid argument

This apparently happens many times .. the oprofiled.log contains 53K
lines, after a really brief run of a simple program.

ALSO - it has created quite a few of these files, notwithstanding the
HOWEVER - the files ALL have only null data -- in my case, size 2680
with all bytes 0 
                             (same for all files!)
     --> which, naturally, leads to an unhappy result with opreport,
which complains of "Invalid argument"..

NOTE - it did work for a while last week.
       (I don't recall changing any configuration parameters)
I've tried reinstalling the SDK filesystem and oprofile things, but no

Runs are made with /var/lib/oprofile -> /home/user/runs/oprofile, lots
of space available on main file system, empty "oprofile" directory to
start with.

Any suggestions would be most helpful....
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