Red Hat Bugzilla – Bug 76746
Upgrade to oprofile 0.3 with module support.
Last modified: 2008-08-01 12:22:52 EDT
I appended 2 patches, one for module and the
other for oprofile 0.3.
Created attachment 82105 [details]
Support oprofile module
Created attachment 82106 [details]
Upgrade to oprofile 0.3
exporting the sys_call_table is not an option; it actually makes oprofile unsafe
to use ;(
the real fix is to backport the 2.5 version that doesn't need this export...
Do you have a testcase to show the sys_call_table
problem? I haven't noticed any yet.
load oprofile. load vtune.
stop oprofile, unload module
both oprofile and vtune would stack on the same syscalls... but only save the
Are you implying making oprofile builtin makes it safe?
If it is true, I have one line change to disable unloading
not making the syscall table available to modules makes it safe
eg there is only going to be exactly 1 thing that can muck about with it and
that is oprofile
I can live with that if I have to make a choice.
I need oprofile on UP kernel and it is disabled.
The worst can happen is I have to remember I can
only use oprofile or vtune at a time. I don't
even know/use vtune, which I assume has something
to do with VTune from Intel.
the reason oprofile is disabled on UP is because it unconditially enabled the
apic... which breaks several laptops
we're trying to fix THAT and then it'll be on in the UP kernel again
Thanks for the bug report. However, Red Hat no longer maintains this version of
the product. Please upgrade to the latest version and open a new bug if the problem
The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases,
and if you believe this bug is interesting to them, please report the problem in
the bug tracker at: http://bugzilla.fedora.us/