From 9cc63f8bcd560c760d0b12e15bba8f81c86237cf Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Fri, 14 Aug 2026 15:43:51 -0700 Subject: Merge branches 'expcb.2026.07.24a', 'misc.2026.07.30a', 'rcu-tasks.2026.07.30a', 'srcu.2026.08.11a' and 'torture.2026.08.14a' into HEAD Changes: Make expedited grace periods expedite normal RCU callbacks Miscellaneous fixes: * Improve diagnostic output with character task states. * Mark accesses to inform KCSAN of concurrency design. * Move from kmalloc() to kmalloc_obj(). * Documentation updates. * Improve handling of RCU deferred quiescent states. * Clean up unused function arguments and structure fields. * Reduce show_rcu_gp_kthreads() stack space. Tasks RCU updates: * Clean up after SRCU re-implementation of Tasks Trace RCU. * Mark accesses to inform KCSAN of concurrency design. * Add ->lazy_timer status to diagnostic output. * Remove an unnecessary memory barrier. * Fix a data race, courtesy of KCSAN. * Documentation updates. * Convert cond_resched_tasks_rcu_qs() from macro to static inline function. SRCU updates: * Add Rust helpers for SRCU. * Avoid losing queued work at cleanup_srcu_struct() time. Torture-test updates: * Preparation work for immediate RCU priority deboosting. * Test RCU readers from real interrupt handlers (as opposed to softirq). * Simplify code through use of cpumask_next_wrap(). * Improve diagnostic output with character task states. * Add rcutorture.nwriters parameter to allow lightweight stall testing, and rcutorture.stall_only to make doing so easier. * Test an RCU Tasks Trace grace period implying an RCU grace period. * Make RCU Tasks Trace torturing track reader batches. * Fix a data race, courtesy of KCSAN. * Plug a shuffle_tmp_mask memory leak on kthread spawn failure. --- tools/testing/radix-tree/test.h | 59 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 tools/testing/radix-tree/test.h (limited to 'tools/testing/radix-tree/test.h') diff --git a/tools/testing/radix-tree/test.h b/tools/testing/radix-tree/test.h new file mode 100644 index 000000000..7ef7067e9 --- /dev/null +++ b/tools/testing/radix-tree/test.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include +#include +#include +#include + +struct item { + struct rcu_head rcu_head; + unsigned long index; + unsigned int order; +}; + +struct item *item_create(unsigned long index, unsigned int order); +int item_insert(struct radix_tree_root *root, unsigned long index); +void item_sanity(struct item *item, unsigned long index); +void item_free(struct item *item, unsigned long index); +int item_delete(struct radix_tree_root *root, unsigned long index); +int item_delete_rcu(struct xarray *xa, unsigned long index); +struct item *item_lookup(struct radix_tree_root *root, unsigned long index); + +void item_check_present(struct radix_tree_root *root, unsigned long index); +void item_check_absent(struct radix_tree_root *root, unsigned long index); +void item_gang_check_present(struct radix_tree_root *root, + unsigned long start, unsigned long nr, + int chunk, int hop); +void item_full_scan(struct radix_tree_root *root, unsigned long start, + unsigned long nr, int chunk); +void item_kill_tree(struct radix_tree_root *root); + +int tag_tagged_items(struct xarray *, unsigned long start, unsigned long end, + unsigned batch, xa_mark_t iftag, xa_mark_t thentag); + +void xarray_tests(void); +void tag_check(void); +void multiorder_checks(void); +void iteration_test(unsigned order, unsigned duration); +void iteration_test2(unsigned duration); +void benchmark(void); +void idr_checks(void); +void ida_tests(void); + +struct item * +item_tag_set(struct radix_tree_root *root, unsigned long index, int tag); +struct item * +item_tag_clear(struct radix_tree_root *root, unsigned long index, int tag); +int item_tag_get(struct radix_tree_root *root, unsigned long index, int tag); +void tree_verify_min_height(struct radix_tree_root *root, int maxindex); +void verify_tag_consistency(struct radix_tree_root *root, unsigned int tag); + +extern int nr_allocated; + +/* Normally private parts of lib/radix-tree.c */ +struct radix_tree_node *entry_to_node(void *ptr); +void radix_tree_dump(struct radix_tree_root *root); +int root_tag_get(struct radix_tree_root *root, unsigned int tag); +unsigned long node_maxindex(struct radix_tree_node *); +unsigned long shift_maxindex(unsigned int shift); +int radix_tree_cpu_dead(unsigned int cpu); +extern struct radix_tree_preload radix_tree_preloads; -- cgit v1.3.1