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Re: user instruction tracing patch?
On Fri, Nov 16, 2007 at 01:20:51PM -0800, Jim Keniston wrote:
> But what both examples assume is that a task can dynamically
> enable/disable probes only for itself (in the case of utrace/itrace)
> or its own process (uprobes).
Not at all - the script fragments were merely examples of a general
syntax. There is no reason that the probes being enabled/disabled
might not belong to an altogether "foreign" facility such as a timer,
or a kprobe, or another process's uprobe. (This one reason why the
implementation of disableable probes will be a bit tricky.)