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Sun, 16 Mar 2025 12:58:16 -0700 (PDT) Received: from grain.localdomain ([5.18.255.97]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-549ba7c2558sm1157267e87.94.2025.03.16.12.58.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 16 Mar 2025 12:58:16 -0700 (PDT) Received: by grain.localdomain (Postfix, from userid 1000) id 8F97C5A002E; Sun, 16 Mar 2025 22:58:15 +0300 (MSK) Date: Sun, 16 Mar 2025 22:58:15 +0300 From: Cyrill Gorcunov To: LKML Cc: Anna-Maria Behnsen , Frederic Weisbecker , Thomas Gleixner Subject: [PATCH] posix-timers: Drop redundant memset call Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/2.2.14 (2025-02-20) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Initially in the commit 6891c4509c79 memset call has been needed to clear the memory allocated on a stack, then in the commit 2482097c6c0f memset call occasionally sneaked in regardless the fact that we're using kmem_cache_zalloc to allocate a new timer, lets save a few cycles dropping this call. Signed-off-by: Cyrill Gorcunov --- kernel/time/posix-timers.c | 1 - 1 file changed, 1 deletion(-) Index: linux-tip.git/kernel/time/posix-timers.c =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --- linux-tip.git.orig/kernel/time/posix-timers.c +++ linux-tip.git/kernel/time/posix-timers.c @@ -526,7 +526,6 @@ static int do_timer_create(clockid_t whi } else { new_timer->it_sigev_notify =3D SIGEV_SIGNAL; new_timer->sigq.info.si_signo =3D SIGALRM; - memset(&new_timer->sigq.info.si_value, 0, sizeof(sigval_t)); new_timer->sigq.info.si_value.sival_int =3D new_timer->it_id; new_timer->it_pid =3D get_pid(task_tgid(current)); }