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    Subject[PATCH 1/2] Add for_each_module iterator function
    Date
    From: Andi Kleen <ak@linux.intel.com>

    This is a generic function to iterate over all modules.
    To be used in the next patch.

    Signed-off-by: Andi Kleen <ak@linux.intel.com>
    ---
    include/linux/module.h | 1 +
    kernel/module.c | 10 ++++++++++
    2 files changed, 11 insertions(+), 0 deletions(-)

    diff --git a/include/linux/module.h b/include/linux/module.h
    index 403ac26..809b6db 100644
    --- a/include/linux/module.h
    +++ b/include/linux/module.h
    @@ -410,6 +410,7 @@ struct module *__module_address(unsigned long addr);
    bool is_module_address(unsigned long addr);
    bool is_module_percpu_address(unsigned long addr);
    bool is_module_text_address(unsigned long addr);
    +void for_each_module(void (*op)(struct module *, void *arg), void *arg);

    static inline int within_module_core(unsigned long addr, struct module *mod)
    {
    diff --git a/kernel/module.c b/kernel/module.c
    index eba1341..b8fb3e6 100644
    --- a/kernel/module.c
    +++ b/kernel/module.c
    @@ -384,6 +384,16 @@ struct module *find_module(const char *name)
    }
    EXPORT_SYMBOL_GPL(find_module);

    +void for_each_module(void (*op)(struct module *, void *arg), void *arg)
    +{
    + struct module *mod;
    +
    + preempt_disable();
    + list_for_each_entry_rcu(mod, &modules, list)
    + op(mod, arg);
    + preempt_enable();
    +}
    +
    #ifdef CONFIG_SMP

    static inline void __percpu *mod_percpu(struct module *mod)
    --
    1.7.1


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