[patch 2/5] Add apply_modules() which applies a function to each module.

[Greg Banks <gnb@sgi.com>]

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The new dprintk module needs to apply a particular function
to each module when the dprintk module loads.

Signed-off-by: Greg Banks <gnb@sgi.com>
---

 include/linux/module.h |    1 +
 kernel/module.c        |   13 +++++++++++++
 2 files changed, 14 insertions(+)

Index: bfields/kernel/module.c
===================================================================
--- bfields.orig/kernel/module.c
+++ bfields/kernel/module.c
@@ -365,6 +365,19 @@ static struct module *find_module(const 
 	return NULL;
 }
 
+void apply_modules(void (*func)(struct module*, void *), void *closure)
+{
+	struct module *mod;
+
+	preempt_disable();
+	list_for_each_entry_rcu(mod, &modules, list) {
+		func(mod, closure);
+	}
+	preempt_enable();
+}
+EXPORT_SYMBOL(apply_modules);
+
+
 #ifdef CONFIG_SMP
 /* Number of blocks used and allocated. */
 static unsigned int pcpu_num_used, pcpu_num_allocated;
Index: bfields/include/linux/module.h
===================================================================
--- bfields.orig/include/linux/module.h
+++ bfields/include/linux/module.h
@@ -475,6 +475,7 @@ extern void module_update_markers(void);
 
 extern void module_update_tracepoints(void);
 extern int module_get_iter_tracepoints(struct tracepoint_iter *iter);
+extern void apply_modules(void (*func)(struct module*, void *), void *closure);
 
 #else /* !CONFIG_MODULES... */
 #define EXPORT_SYMBOL(sym)

--
-- 
Greg Banks, P.Engineer, SGI Australian Software Group.
the brightly coloured sporks of revolution.
I don't speak for SGI.