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Re: stpd kernel event filtering
- From: fche at redhat dot com (Frank Ch. Eigler)
- To: "Mao, Bibo" <bibo dot mao at intel dot com>
- Cc: "systemtap" <systemtap at sources dot redhat dot com>
- Date: 05 Apr 2006 17:19:05 -0400
- Subject: Re: stpd kernel event filtering
- References: <9FBCE015AF479F46B3B410499F3AE05BEDA978@pdsmsx405>
"Mao, Bibo" <bibo.mao@intel.com> writes:
> [... Maybe] there should be one additional option in stap. If this
> option is on, all probepoint related with stpd will be discarded;
> else user will get all real raw data including stpd process.
That's a reasonable option. The translator could emit the explicit
conditional within the probe prologue, that is as long as the
conditional can apply generally to all kinds of probes. Actually,
"begin" and "end" probes often run from the context of stpd, so they
would have to skip the check. And what about timers/profiling ...
or interrupt handlers?
- FChE