linux-kernel - [PATCH] lib/debugobjects: Export for use in modules

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Date:   Tue, 22 Nov 2016 14:17:09 +0000
From:   Chris Wilson <chris@...is-wilson.co.uk>
To:     linux-kernel@...r.kernel.org
Cc:     Chris Wilson <chris@...is-wilson.co.uk>,
        "Du, Changbin" <changbin.du@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        intel-gfx@...ts.freedesktop.org
Subject: [PATCH] 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.

Signed-off-by: Chris Wilson <chris@...is-wilson.co.uk>
Cc: "Du, Changbin" <changbin.du@...el.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Christian Borntraeger <borntraeger@...ibm.com>
Cc: intel-gfx@...ts.freedesktop.org
---
 lib/debugobjects.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index a8e12601eb37..056052dc8e91 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -362,6 +362,7 @@ void debug_object_init(void *addr, struct debug_obj_descr *descr)
 
 	__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 *addr, struct debug_obj_descr *descr)
 
 	__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, struct debug_obj_descr *descr)
 	}
 	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, struct debug_obj_descr *descr)
 
 	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, struct debug_obj_descr *descr)
 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, struct debug_obj_descr *descr)
 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, struct debug_obj_descr *descr)
 
 	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, struct debug_obj_descr *descr,
 
 	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)
-- 
2.10.2