From: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Subject: lib/debugobjects: export for use in modules Drivers, or other modules, that use a mixture of objects (especially objects embedded within other objects) would like to take advantage of the debugobjects facilities to help catch misuse. Currently, the debugobjects interface is only available to builtin drivers and requires a set of EXPORT_SYMBOL_GPL for use by modules. I am using the debugobjects in i915.ko to try and catch some invalid operations on embedded objects. The problem currently only presents itself across module unload so forcing i915 to be builtin is not an option. Link: http://lkml.kernel.org/r/20161122143039.6433-1-chris@xxxxxxxxxxxxxxxxxx Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Cc: "Du, Changbin" <changbin.du@xxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Christian Borntraeger <borntraeger@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- lib/debugobjects.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff -puN lib/debugobjects.c~lib-debugobjects-export-for-use-in-modules lib/debugobjects.c --- a/lib/debugobjects.c~lib-debugobjects-export-for-use-in-modules +++ a/lib/debugobjects.c @@ -362,6 +362,7 @@ void debug_object_init(void *addr, struc __debug_object_init(addr, descr, 0); } +EXPORT_SYMBOL_GPL(debug_object_init); /** * debug_object_init_on_stack - debug checks when an object on stack is @@ -376,6 +377,7 @@ void debug_object_init_on_stack(void *ad __debug_object_init(addr, descr, 1); } +EXPORT_SYMBOL_GPL(debug_object_init_on_stack); /** * debug_object_activate - debug checks when an object is activated @@ -449,6 +451,7 @@ int debug_object_activate(void *addr, st } return 0; } +EXPORT_SYMBOL_GPL(debug_object_activate); /** * debug_object_deactivate - debug checks when an object is deactivated @@ -496,6 +499,7 @@ void debug_object_deactivate(void *addr, raw_spin_unlock_irqrestore(&db->lock, flags); } +EXPORT_SYMBOL_GPL(debug_object_deactivate); /** * debug_object_destroy - debug checks when an object is destroyed @@ -542,6 +546,7 @@ void debug_object_destroy(void *addr, st out_unlock: raw_spin_unlock_irqrestore(&db->lock, flags); } +EXPORT_SYMBOL_GPL(debug_object_destroy); /** * debug_object_free - debug checks when an object is freed @@ -582,6 +587,7 @@ void debug_object_free(void *addr, struc out_unlock: raw_spin_unlock_irqrestore(&db->lock, flags); } +EXPORT_SYMBOL_GPL(debug_object_free); /** * debug_object_assert_init - debug checks when object should be init-ed @@ -626,6 +632,7 @@ void debug_object_assert_init(void *addr raw_spin_unlock_irqrestore(&db->lock, flags); } +EXPORT_SYMBOL_GPL(debug_object_assert_init); /** * debug_object_active_state - debug checks object usage state machine @@ -673,6 +680,7 @@ debug_object_active_state(void *addr, st raw_spin_unlock_irqrestore(&db->lock, flags); } +EXPORT_SYMBOL_GPL(debug_object_active_state); #ifdef CONFIG_DEBUG_OBJECTS_FREE static void __debug_check_no_obj_freed(const void *address, unsigned long size) _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
