These patches fix various RCU API usage issues found due to sparse errors as a result of the recent check to add rcu_check_sparse() to rcu_assign_pointer(). The errors in many cases seem to indicate either an incorrect API usage, or missing annotations. The annotations added can also help avoid future incorrect usages and bugs so it is a good idea to do in any case.
These are only build/boot tested and I request for feedback from maintainers and developers in the various areas the patches touch. Thanks for any feedback! (There are still errors in rbtree.h but I have kept those for a later time since fixing them is a bit more involved). Joel Fernandes (Google) (5): net: rtnetlink: Fix incorrect RCU API usage ixgbe: Fix incorrect RCU API usage sched/cpufreq: Fix incorrect RCU API usage sched/topology: Annonate RCU pointers properly rcuwait: Replace rcu_assign_pointer() with WRITE_ONCE drivers/net/ethernet/intel/ixgbe/ixgbe.h | 4 ++-- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 17 ++++++++++++----- include/linux/rcuwait.h | 2 +- kernel/sched/cpufreq.c | 8 ++++++-- kernel/sched/sched.h | 14 +++++++------- kernel/sched/topology.c | 12 ++++++------ net/core/rtnetlink.c | 4 ++-- 7 files changed, 36 insertions(+), 25 deletions(-) -- 2.21.0.rc0.258.g878e2cd30e-goog
