Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752522AbcKHNc0 (ORCPT ); Tue, 8 Nov 2016 08:32:26 -0500 Received: from mail-wm0-f66.google.com ([74.125.82.66]:35740 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751696AbcKHNcW (ORCPT ); Tue, 8 Nov 2016 08:32:22 -0500 From: Chris Wilson To: linux-kernel@vger.kernel.org Cc: Chris Wilson , Andrew Morton , Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Joonsoo Kim , "Kirill A. Shutemov" , Daniel Vetter Subject: [PATCH] lib/stackdepot: Export save/fetch stack for drivers Date: Tue, 8 Nov 2016 13:32:09 +0000 Message-Id: <20161108133209.22704-1-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.10.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1460 Lines: 41 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 Cc: Andrew Morton Cc: Andrey Ryabinin Cc: Alexander Potapenko Cc: Dmitry Vyukov Cc: Joonsoo Kim Cc: "Kirill A. Shutemov" Cc: Daniel Vetter --- 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