From 58d208de3e8d87dbe196caf0b57cc58c7a3836ca Mon Sep 17 00:00:00 2001 From: Aaron Tomlin Date: Tue, 22 Mar 2022 14:03:35 +0000 Subject: module: Move latched RB-tree support to a separate file No functional change. This patch migrates module latched RB-tree support (e.g. see __module_address()) from core module code into kernel/module/tree_lookup.c. Reviewed-by: Christophe Leroy Signed-off-by: Aaron Tomlin Signed-off-by: Luis Chamberlain --- kernel/module/internal.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'kernel/module/internal.h') diff --git a/kernel/module/internal.h b/kernel/module/internal.h index ad7a444253ed..f1682e3677be 100644 --- a/kernel/module/internal.h +++ b/kernel/module/internal.h @@ -9,6 +9,7 @@ #include #include #include +#include #ifndef ARCH_SHF_SMALL #define ARCH_SHF_SMALL 0 @@ -93,3 +94,35 @@ static inline void module_decompress_cleanup(struct load_info *info) { } #endif + +#ifdef CONFIG_MODULES_TREE_LOOKUP +struct mod_tree_root { + struct latch_tree_root root; + unsigned long addr_min; + unsigned long addr_max; +}; + +extern struct mod_tree_root mod_tree; + +void mod_tree_insert(struct module *mod); +void mod_tree_remove_init(struct module *mod); +void mod_tree_remove(struct module *mod); +struct module *mod_find(unsigned long addr); +#else /* !CONFIG_MODULES_TREE_LOOKUP */ + +static inline void mod_tree_insert(struct module *mod) { } +static inline void mod_tree_remove_init(struct module *mod) { } +static inline void mod_tree_remove(struct module *mod) { } +static inline struct module *mod_find(unsigned long addr) +{ + struct module *mod; + + list_for_each_entry_rcu(mod, &modules, list, + lockdep_is_held(&module_mutex)) { + if (within_module(addr, mod)) + return mod; + } + + return NULL; +} +#endif /* CONFIG_MODULES_TREE_LOOKUP */ -- cgit v1.2.3