Hi Catalin, There are new compile warnings show up in tree: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git akpm head: 37e2ad4953983527f7bdb6831bf478eedcc84082 commit: ffacc905e2135e8408d43adbe0b8e21484b2c8e7 [244/309] atomic64_test: simplify the #ifdef for atomic64_dec_if_positive() test config: sparc-allmodconfig (attached as .config) All warnings: lib/atomic64_test.c: In function 'test_atomic64': lib/atomic64_test.c:131:2: warning: #warning Please implement atomic64_dec_if_positive for your architecture and select the above Kconfig symbol [-Wcpp] vim +131 lib/atomic64_test.c 128 BUG_ON(atomic64_dec_if_positive(&v) != (-one - one)); 129 BUG_ON(v.counter != r); 130 #else > 131 #warning Please implement atomic64_dec_if_positive for your architecture and select the above Kconfig symbol 132 #endif 133 134 INIT(onestwos); --- 0-DAY kernel build testing backend Open Source Technology Centre Fengguang Wu Intel Corporation