From: Arnd Bergmann Date: Tue, 13 Mar 2018 13:18:46 +0000 (+0100) Subject: debugobjects: Avoid another unused variable warning X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=163cf842f5837334bc69aaf09ad38e11f4573914;p=linux.git debugobjects: Avoid another unused variable warning debug_objects_maxchecked is only updated in __debug_check_no_obj_freed(), and only read in debug_objects_maxchecked, unfortunately both of these are optional and depend on different Kconfig symbols. When both CONFIG_DEBUG_OBJECTS_FREE and CONFIG_DEBUG_FS are disabled this warning is emitted: lib/debugobjects.c:56:14: error: 'debug_objects_maxchecked' defined but not used [-Werror=unused-variable] Rather than trying to add more complex #ifdef protections, mark the variable as __maybe_unused so it can be silently dropped when usused. Fixes: bd9dcd046509 ("debugobjects: Export max loops counter") Signed-off-by: Arnd Bergmann Signed-off-by: Thomas Gleixner Acked-by: Yang Shi Cc: Waiman Long Link: https://lkml.kernel.org/r/20180313131857.158876-1-arnd@arndb.de --- diff --git a/lib/debugobjects.c b/lib/debugobjects.c index 105ecfc47d8c3..994be4805ceca 100644 --- a/lib/debugobjects.c +++ b/lib/debugobjects.c @@ -53,7 +53,7 @@ static int obj_nr_tofree; static struct kmem_cache *obj_cache; static int debug_objects_maxchain __read_mostly; -static int debug_objects_maxchecked __read_mostly; +static int __maybe_unused debug_objects_maxchecked __read_mostly; static int debug_objects_fixups __read_mostly; static int debug_objects_warnings __read_mostly; static int debug_objects_enabled __read_mostly