Re: [RFC][PATCH 00/36] objtool: Make recordmcount a subcommand

[Steven Rostedt]

On Tue, 14 Apr 2020 22:47:29 +0200
Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> On Tue, Apr 14, 2020 at 01:09:10PM -0700, Matt Helsley wrote:
> > I also noticed that, for example, sorttable uses the same ELF code /
> > patterns as recordmcount -- like the double-include trick. Of course
> > it operates on a larger scale than per-object-file and so there might
> > only be code maintenance savings there...  
> 
> I'm >< close to having objtool run on vmlinux in the link stage too :-)

Do we want that? Matters how long that takes. One reason I avoided running
recordmcount on vmlinux was because I didn't want to add to the build time
that much if I only needed to compile a single object.

If it's fast, then there shouldn't be anything to worry about, but if it
takes a minute on a common machine, that's one minute added to all builds,
no matter how little you had to compile.

-- Steve