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[66.187.233.206]) by smtp.gmail.com with ESMTPSA id 139sm1822874qkf.14.2019.09.17.13.30.42 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 17 Sep 2019 13:30:42 -0700 (PDT) From: Qian Cai To: akpm@linux-foundation.org Cc: rientjes@google.com, cl@linux.com, penberg@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Qian Cai Subject: [PATCH] mm/slub: fix -Wunused-function compiler warnings Date: Tue, 17 Sep 2019 16:30:32 -0400 Message-Id: <1568752232-5094-1-git-send-email-cai@lca.pw> X-Mailer: git-send-email 1.8.3.1 X-Bogosity: Ham, tests=bogofilter, spamicity=0.030575, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: tid_to_cpu() and tid_to_event() are only used in note_cmpxchg_failure() when SLUB_DEBUG_CMPXCHG=y, so when SLUB_DEBUG_CMPXCHG=n by default, Clang will complain that those unused functions. Signed-off-by: Qian Cai Acked-by: David Rientjes --- mm/slub.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/slub.c b/mm/slub.c index 8834563cdb4b..49739f005b4f 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -2004,6 +2004,7 @@ static inline unsigned long next_tid(unsigned long tid) return tid + TID_STEP; } +#ifdef SLUB_DEBUG_CMPXCHG static inline unsigned int tid_to_cpu(unsigned long tid) { return tid % TID_STEP; @@ -2013,6 +2014,7 @@ static inline unsigned long tid_to_event(unsigned long tid) { return tid / TID_STEP; } +#endif static inline unsigned int init_tid(int cpu) {