Some drivers would like to record stacktraces in order to aide leak
tracing. As stackdepot already provides a facility for only storing the
unique traces, thereby reducing the memory required, export that
functionality for use by drivers.
The code was originally created for KASAN and moved under lib in commit
cd11016e5f521 ("mm, kasan: stackdepot implementation. Enable stackdepot
for SLAB") so that it could be shared with mm/. In turn, we want to
share it now with drivers.
Signed-off-by: Chris Wilson <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Cc: Alexander Potapenko <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: "Kirill A. Shutemov" <[email protected]>
Cc: Daniel Vetter <[email protected]>
---
lib/stackdepot.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/lib/stackdepot.c b/lib/stackdepot.c
index 4d830e299989..f87d138e9672 100644
--- a/lib/stackdepot.c
+++ b/lib/stackdepot.c
@@ -192,6 +192,7 @@ void depot_fetch_stack(depot_stack_handle_t handle, struct stack_trace *trace)
trace->entries = stack->entries;
trace->skip = 0;
}
+EXPORT_SYMBOL_GPL(depot_fetch_stack);
/**
* depot_save_stack - save stack in a stack depot.
@@ -283,3 +284,4 @@ depot_stack_handle_t depot_save_stack(struct stack_trace *trace,
fast_exit:
return retval;
}
+EXPORT_SYMBOL_GPL(depot_save_stack);
--
2.10.2