On Wed, Jul 25, 2012 at 10:13 AM, Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@xxxxxxxxxxx> wrote: > Hi Stefan, > > > (2012/07/24 22:41), Stefan Hajnoczi wrote: >> >> On Tue, Jul 24, 2012 at 12:19 PM, Yoshihiro YUNOMAE >> <yoshihiro.yunomae.ez@xxxxxxxxxxx> wrote: >>>>> >>>>> Are you using text formatted ftrace? >>> >>> No, currently using raw format, but we'd like to reformat it in text. >> >> >> Capturing the info necessary to translate numbers into symbols is one >> of the problems of host<->guest tracing so I'm curious how you handle >> this :). > > > Right, your consideration is true. > > >> Apologies for my lack of ftrace knowledge but how useful is the raw >> tracing data on the host? How do you pretty-print it in >> human-readable form? > > > perf and trace-cmd can actually translate raw-formatted trace data to > text-formatted trace data by using information of kernel or trace > format under tracing/events directory in debugfs. In the same way, if > the information of a guest is exported to a host, we can translate > raw trace data of a guest to text trace data on a host. We will use > 9pfs to export that. Thanks, it's clear now :). Stefan _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
