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authorPaul E. McKenney <paulmck@kernel.org>2025-11-15 19:07:41 -0800
committerJoel Fernandes <joelagnelf@nvidia.com>2026-03-30 15:48:13 -0400
commitc6f4e552e1eae4a5726230254108213b085e1ae3 (patch)
treefdc2b13626bcb2968747219901970cc7084d3e3b /include/linux
parent7aaa8047eafd0bd628065b15757d9b48c5f9c07d (diff)
rcutorture: Add a textbook-style trivial preemptible RCU
This commit adds a trivial textbook implementation of preemptible RCU to rcutorture ("torture_type=trivial-preempt"), similar in spirit to the existing "torture_type=trivial" textbook implementation of non-preemptible RCU. Neither trivial RCU implementation has any value for production use, and are intended only to keep Paul honest in his introductory writings and presentations. [ paulmck: Apply kernel test robot feedback. ] Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/sched.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 5a5d3dbc9cdf..ffb2ad9716f0 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -949,6 +949,10 @@ struct task_struct {
struct srcu_ctr __percpu *trc_reader_scp;
#endif /* #ifdef CONFIG_TASKS_TRACE_RCU */
+#ifdef CONFIG_TRIVIAL_PREEMPT_RCU
+ int rcu_trivial_preempt_nesting;
+#endif /* #ifdef CONFIG_TRIVIAL_PREEMPT_RCU */
+
struct sched_info sched_info;
struct list_head tasks;