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authorSasha Levin <sasha.levin@oracle.com>2013-06-13 18:41:16 -0400
committerIngo Molnar <mingo@kernel.org>2013-11-27 11:55:20 +0100
commit8dce7a9a6f4ca7163161a80a4603b66c88c5de8e (patch)
treebea6b608c5c0c3cade0bf49597562660d477c75d /kernel/locking
parent5c4853b60ca8ec3d989ce05a5e995d15c3ed52c0 (diff)
lockdep: Be nice about building from userspace
Lockdep is an awesome piece of code which detects locking issues which are relevant both to userspace and kernelspace. We can easily make lockdep work in userspace since there is really no kernel spacific magic going on in the code. All we need is to wrap two functions which are used by lockdep and are very kernel specific. Doing that will allow tools located in tools/ to easily utilize lockdep's code for their own use. Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: penberg@kernel.org Cc: torvalds@linux-foundation.org Link: http://lkml.kernel.org/r/1352753446-24109-1-git-send-email-sasha.levin@oracle.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/locking')
-rw-r--r--kernel/locking/lockdep.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 576ba756a32d..eb8a54783fa0 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -590,6 +590,7 @@ static int very_verbose(struct lock_class *class)
/*
* Is this the address of a static object:
*/
+#ifdef __KERNEL__
static int static_obj(void *obj)
{
unsigned long start = (unsigned long) &_stext,
@@ -616,6 +617,7 @@ static int static_obj(void *obj)
*/
return is_module_address(addr) || is_module_percpu_address(addr);
}
+#endif
/*
* To make lock name printouts unique, we calculate a unique
@@ -4115,6 +4117,7 @@ void debug_check_no_locks_held(void)
}
EXPORT_SYMBOL_GPL(debug_check_no_locks_held);
+#ifdef __KERNEL__
void debug_show_all_locks(void)
{
struct task_struct *g, *p;
@@ -4172,6 +4175,7 @@ retry:
read_unlock(&tasklist_lock);
}
EXPORT_SYMBOL_GPL(debug_show_all_locks);
+#endif
/*
* Careful: only use this function if you are sure that