Liu, Eric E wrote: > Hi, > The following patches port xentrace to kvm which is useful for > performance tuning and debugging. > > It is designed to allow debugging traces of kvm to be generated on > Up/Smp machines. Each trace entry is outputted in a trace ring buffer > for per cpu which is mapped to userspace, and the userspace tools can > analyze the data according to some formats definitions. > > Since we already have had debugfs_entries and some other kernel debug > mechanism to use, does this kvmtrace make sense? Any comment is > welcomed. >
This looks very useful. While kvm_stat provides good data, this is much more in depth. The kernel already contains a method of transferring percpu data to userspace; see Documentation/filesystems/relay.txt. It supports mmap() and read(). Please see if it is a good fit. Please post patches with individual subjects, instead of having the same subject for every patch. -- error compiling committee.c: too many arguments to function ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
