----- Original Message ----- > Hi, > > just a head's up that the linux radix_tree got replaced by something > called xarray in 4.20 (already into master, will be in 4.20-rc1) > > You can look at the patch series here: > https://lore.kernel.org/lkml/20180313132639.17387-3-willy@xxxxxxxxxxxxx/T/#m6a36aa7f22925c61ed59ed78312ccfadb08f9ecc > > * [PATCH v9 11/61] xarray: Add definition of struct xarray > -> replaces radix_tree_root by xarray > * [PATCH v9 12/61] xarray: Define struct xa_node > -> replaces radix_tree_node by xa_node > > As far as I can tell they look fairly close to radix_tree for now, but > while I hoped just renaming fields and removing max height might do the > trick, but it looks like one would need to actually look at the > differences in implementation as just doing that was a bit optimistic... > The tree iteration for running tasks got me 4 tasks so it obviously > didn't get very far; I probably missed something obvious. > > > For now I wanted to debug something else so went back a notch instead of > trying harder, I'll probably come back to this in the next few weeks if > nobody else has. Don't wait for me if you want to do it though :) > > (hopefully that'll save someone a few minutes if they run into this > meanwhile) > Hi Dominique, Thanks for the heads-up -- this is a critical change w/respect to the crash utility, affecting several other parts as well as the PID/task gathering mechanism. I don't have access to 4.20-rc1 kernels in-house, or from Fedora, at the moment, so I won't be able to do any hands-on work on it for a while. So given the insights you've gained already, by all means please continue if you can! Thanks, Dave > > Cheers, > -- > Dominique Martinet | Asmadeus > > -- > Crash-utility mailing list > Crash-utility@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/crash-utility > -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
