lkml.org 
[lkml]   [2012]   [Apr]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] perf/probe: Provide perf interface for uprobes
> 
> > > Another case
> > > perf probe do_fork clone_flags now looks for variable clone_flags in
> > > kernel function do_fork.
>
> > > But if we allow to trace perf probe zsh zfree; then
> > > 'perf probe do_fork clone_flags' should it check for do_fork executable
> > > or not? If it does check and finds one, and searches for clone_flags
> > > function and doesnt find, then should it continue with searching the
> > > kernel?
>
> > Agree. I'd like to suggest you to start with only full path support,
> > and see, how we can handle abbreviations :)
>
> Agreed, I was just making usability suggestions.
>
> Those can be implemented later, if we agree they ease the tool use.
>

I have just made a prototype for guessing the target when -m and -x
options arent passed. That still uses the absolute path for now.

I was trying to see if we can identify the module by the short name by
using kernel_get_module_path(). However kernel_get_module_path() needs
init_vmlinux() to be called before. Since init_vmlinux() cant be called
more than once and init_vmlinux gets called later, I thought calling it
here wasnt good option. Wanted to see if we could open /proc/modules
and then match the module name. But again, I wasnt sure how to handle
offline modules.

--
Thanks and Regards
Srikar



\
 
 \ /
  Last update: 2012-04-16 14:39    [W:0.097 / U:1.208 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site