On Thu, Jul 11, 2019 at 11:53:12AM -0700, Bart Van Assche wrote: > On 7/10/19 3:09 PM, Peter Zijlstra wrote: > > One thing I mentioned when Thomas did the unwinder API changes was > > trying to move lockdep over to something like stackdepot. > > > > We can't directly use stackdepot as is, because it uses locks and memory > > allocation, but we could maybe add a lower level API to it and use that > > under the graph_lock() on static storage or something. > > > > Otherwise we'll have to (re)implement something like it. > > > > I've not looked at it in detail. > > Hi Peter, > > Is something like the untested patch below perhaps what you had in mind?
Most excellent, yes! Now I suppose the $64000 question is if it actually reduces the amount of storage we use for stack traces.. Seems to boot just fine.. :-)
