On 01/25, Ingo Molnar wrote:
>
> * Srikar Dronamraju <sri...@linux.vnet.ibm.com> wrote:
>
> > The other alternative is to extend the current abi and pass
> > the prefilter option. Should we extend the abi for userspace
> > tracing is obviously debatable.
>
> That's the obvious path to go - why add something to the kernel
> if user-space cannot make use of it?
This is what I am going to (try to) do, but I am not sure if this makes
sense...
For the start, can't we teach 'uprobe_events' file to accept, say,
'p file:0x1234 pid=1 other-opts'
for the start? This looks simple enough, and I after looked into tools/perf
it seems that perf can be changed too.
What do you think?
Then we can extend 'pid=' option to accept the list of pids, perhaps.
In the long term we probably need uprobes/pid_filter or something like this,
it should allow to add/del pid dynamically. I really do not know.
Oleg.
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