[0/4] rcu: Fix PF_IDLE related issues v2

Message

Frederic Weisbecker Oct. 24, 2023, 9:46 p.m. UTC

The modification of PF_IDLE semantics lately to fix a bug in rcutiny
eventually introduced new bugs in RCU-tasks. In this v2, this series
propose to fix these issues without reverting:

	cff9b2332ab7 ("kernel/sched: Modify initial boot task idle setup")

Frederic Weisbecker (4):
  rcu: Introduce rcu_cpu_online()
  rcu/tasks: Handle new PF_IDLE semantics
  rcu/tasks-trace: Handle new PF_IDLE semantics
  sched: Exclude CPU boot code from PF_IDLE area

 include/linux/sched.h |  2 +-
 kernel/cpu.c          |  4 ++++
 kernel/rcu/rcu.h      |  2 ++
 kernel/rcu/tasks.h    | 33 ++++++++++++++++++++++++++++++---
 kernel/rcu/tree.c     |  7 +++++++
 kernel/sched/idle.c   |  1 -
 6 files changed, 44 insertions(+), 5 deletions(-)