forked from luck/tmp_suning_uos_patched
[PATCH] lockdep: add is_module_address()
Add is_module_address() method - to be used by lockdep. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -358,6 +358,7 @@ static inline int module_is_live(struct module *mod)
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/* Is this address in a module? (second is with no locks, for oops) */
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struct module *module_text_address(unsigned long addr);
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struct module *__module_text_address(unsigned long addr);
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int is_module_address(unsigned long addr);
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/* Returns module and fills in value, defined and namebuf, or NULL if
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symnum out of range. */
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@ -496,6 +497,11 @@ static inline struct module *__module_text_address(unsigned long addr)
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return NULL;
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}
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static inline int is_module_address(unsigned long addr)
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{
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return 0;
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}
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/* Get/put a kernel symbol (calls should be symmetric) */
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#define symbol_get(x) ({ extern typeof(x) x __attribute__((weak)); &(x); })
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#define symbol_put(x) do { } while(0)
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@ -2159,6 +2159,29 @@ const struct exception_table_entry *search_module_extables(unsigned long addr)
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return e;
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}
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/*
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* Is this a valid module address?
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*/
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int is_module_address(unsigned long addr)
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{
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unsigned long flags;
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struct module *mod;
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spin_lock_irqsave(&modlist_lock, flags);
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list_for_each_entry(mod, &modules, list) {
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if (within(addr, mod->module_core, mod->core_size)) {
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spin_unlock_irqrestore(&modlist_lock, flags);
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return 1;
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}
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}
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spin_unlock_irqrestore(&modlist_lock, flags);
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return 0;
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}
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/* Is this a valid kernel address? We don't grab the lock: we are oopsing. */
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struct module *__module_text_address(unsigned long addr)
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{
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