Messages in this thread | | | Date | Wed, 22 Sep 2010 14:25:51 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: [PATCH 1/2] Add for_each_module iterator function |
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On Wed, 22 Sep 2010, Andi Kleen wrote:
> 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();
That wants rcu_read_lock()
> + list_for_each_entry_rcu(mod, &modules, list) > + op(mod, arg); > + preempt_enable();
Thanks,
tglx
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