From patchwork Sat Nov 18 15:50:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yury Norov X-Patchwork-Id: 745221 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="XHFM6tKQ" Received: from mail-yw1-x1133.google.com (mail-yw1-x1133.google.com [IPv6:2607:f8b0:4864:20::1133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1500D1FEB; Sat, 18 Nov 2023 07:51:52 -0800 (PST) Received: by mail-yw1-x1133.google.com with SMTP id 00721157ae682-5c9adcaf514so407127b3.2; Sat, 18 Nov 2023 07:51:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1700322710; x=1700927510; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=5/FFRxNdIVmBtGkGik+eY+kvUwCYYAdIhZdGmVH5ny0=; b=XHFM6tKQUtr+ERDMSFScqY8TpsnBRXCGYuutGO0nb1jrhv7VWiCmz8vSZpRl3H4EXu NFFvC0GFb4qTtkyiEroiLv8JYpXsun4dWahd/cWc+aTR+916BWvMI7BLQCQuSJ6Fjx6s 090ZZr+pw0FC4Bq1GekOw4/eCTAka5QBvtAP78FJ61Ps42T/bDARzMy98D/iZfaF6UQy a6d+X6NSxvFmKGCYr7Krt+yLnooXahSheZ5psFFQElE+6wVU/Qg4ImNxK3eZUs/xp/2G 6wYVpt4CIuhipxn2oo1Jcp08zqJr6C9XjNOupeVlIjjqab8ENkNrALLPhWq33QZFI0FB GFNw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700322710; x=1700927510; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=5/FFRxNdIVmBtGkGik+eY+kvUwCYYAdIhZdGmVH5ny0=; b=Ct4nzdt4mx15hxHbv9hsQAhX2ZtgICGYJzYRlqHiHPRHJa6oEGKJrH7qdylsNj3fTL sJJSB0rcQCe5oR1diK6OgnhPWyDBnYIadr+BiR5o2D0ivbOPEBAC8lGnx02/6l+7ltgI 2IwAy4Gh1TEPeN9Cw9SejC0a5jb3BGCsPobEwVGuUyYcGKXzHeaBA7s0MBDEp5K3E0NK y6OrDPCOWXEZkU63RC3GSf4EGndtCdoy3sI7N4OS/W3G9blvqoRYkHUwXD9+zoZ52iuQ er4glkaX9oODEHOnf+qZmfVM2+uaDndlXBRNDZHMqxxZAOiaSvAhK/7aG0WEPc3kY2Vm 3dqw== X-Gm-Message-State: AOJu0YzJqz7WaDwT8PabL6YOTwuYEF3To1B16tJSGFBNFCnd9T2Ywmhw wISDFCj8etrArWmi3LoI2uXtgy5vyjUKZmyU X-Google-Smtp-Source: AGHT+IGMZW2BXhTq6urOTFJBRfGUnn7sVaNNC8L1hFUdeATS2oy7Q8NxWcEEhUoAcnJ9H9mWRS92oA== X-Received: by 2002:a0d:d951:0:b0:5a7:d412:af32 with SMTP id b78-20020a0dd951000000b005a7d412af32mr2476093ywe.10.1700322710270; Sat, 18 Nov 2023 07:51:50 -0800 (PST) Received: from localhost ([2601:344:8301:57f0:48a9:bd4c:868d:dc97]) by smtp.gmail.com with ESMTPSA id i205-20020a8154d6000000b0059bcadded9dsm1176063ywb.116.2023.11.18.07.51.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 18 Nov 2023 07:51:49 -0800 (PST) From: Yury Norov To: linux-kernel@vger.kernel.org, Karsten Keil , Marcel Holtmann , Johan Hedberg , Luiz Augusto von Dentz , Yury Norov , netdev@vger.kernel.org, linux-bluetooth@vger.kernel.org Cc: Jan Kara , Mirsad Todorovac , Matthew Wilcox , Rasmus Villemoes , Andy Shevchenko , Maxim Kuvyrkov , Alexey Klimov Subject: [PATCH 28/34] bluetooth: optimize cmtp_alloc_block_id() Date: Sat, 18 Nov 2023 07:50:59 -0800 Message-Id: <20231118155105.25678-29-yury.norov@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231118155105.25678-1-yury.norov@gmail.com> References: <20231118155105.25678-1-yury.norov@gmail.com> Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Instead of polling every bit in blockids, switch it to using a dedicated find_and_set_bit(), and make the function a simple one-liner. Signed-off-by: Yury Norov --- net/bluetooth/cmtp/core.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/net/bluetooth/cmtp/core.c b/net/bluetooth/cmtp/core.c index 90d130588a3e..b1330acbbff3 100644 --- a/net/bluetooth/cmtp/core.c +++ b/net/bluetooth/cmtp/core.c @@ -88,15 +88,9 @@ static void __cmtp_copy_session(struct cmtp_session *session, struct cmtp_connin static inline int cmtp_alloc_block_id(struct cmtp_session *session) { - int i, id = -1; + int id = find_and_set_bit(&session->blockids, 16); - for (i = 0; i < 16; i++) - if (!test_and_set_bit(i, &session->blockids)) { - id = i; - break; - } - - return id; + return id < 16 ? id : -1; } static inline void cmtp_free_block_id(struct cmtp_session *session, int id)