Chris Gerhard wrote: > How hard would it be to have is-enabled kernel probes? > > While tracing scsi packets I can get lots of really good data by putting > probes in scsi_transport() and scsi_hba_pkt_comp() as they contain the scsi > packet. However the scsi_address that is available is opaque to all except > the HBA and only available in a meaningful form by calling > scsi_device_unit_address(). Clearly doing this when the probe is not enabled > would be very expensive so having an is-enabled kernel probe would solve this.
I thought that object translations (such as for printing) were supposed to be done in user space -- meaning that instead of an "is-enabled" test in the kernel to avoid "expensive" argument set-ups, you should just unload the raw blob and have a dtrace extension to decode that data. -- James Carlson 42.703N 71.076W <carls...@workingcode.com> _______________________________________________ dtrace-discuss mailing list dtrace-discuss@opensolaris.org
