1. 1a59d1b8 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 by Thomas Gleixner · 6 years ago
  2. 3aef2ca tools: Update rbtree implementation by Davidlohr Bueso · 6 years ago
  3. 3f73537 tools: Copy lib/rbtree.c to tools/lib/ by Arnaldo Carvalho de Melo · 10 years ago