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authorArnd Bergmann <arnd@arndb.de>2018-03-13 14:18:46 +0100
committerThomas Gleixner <tglx@linutronix.de>2018-03-14 20:20:01 +0100
commit163cf842f5837334bc69aaf09ad38e11f4573914 (patch)
treee93bde21962b488212bff99928b8c79ddc36289c
parent04148187aa9df3626168f7429d2287997787e387 (diff)
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 <arnd@arndb.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Yang Shi <yang.shi@linux.alibaba.com> Cc: Waiman Long <longman@redhat.com> Link: https://lkml.kernel.org/r/20180313131857.158876-1-arnd@arndb.de
-rw-r--r--lib/debugobjects.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index 105ecfc47d8c..994be4805cec 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