From nobody Fri Sep 20 01:25:17 2024 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A1ED15DF05 for ; Wed, 6 Mar 2024 09:40:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=60.244.123.138 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709718035; cv=none; b=lUIEAwMLfnzlVYLgaJxQsw/We086BZhhjf19LjLQ14KyQj2bUdy0QEwI0HqVdKjezsegSGceoFkDdFM5l+TYcTdvJtdCeLwLiN5VRCwztT9LlMrjP7v3JnJ5S6OgSYB60d9M/koIkntDNIZSIEEpGlPfcQfScp9At371G+rClVI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709718035; c=relaxed/simple; bh=yAmwTThFElfEUXuzDwez7+utuY3FM973SAHJmZYL1KY=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=hPsppFK8mTFvACwGaW/S9TpUGD/BbZea69JEDDesxiNMhZeUOzRfbq+WEJyYvV7egPykCqs2NQyebShHMn6y5cDIWkRBXSz+69TIKqNfHDld8aiFfN7R7QSwVsnn1BHxj4MXG425aIedPkGzV5NeXDgplqObJfYte9uQ5TjpqfQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com; spf=pass smtp.mailfrom=mediatek.com; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b=DNO8QwTP; arc=none smtp.client-ip=60.244.123.138 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mediatek.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="DNO8QwTP" X-UUID: 90b6474edb9d11eeb8927bc1f75efef4-20240306 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=ekRAdx9PacrM+v9N8B7aPw62g80zVfoirlx+37NhmtQ=; b=DNO8QwTPESmv3TC7DhSCetbJHh8NTV5szUqFOiz29AZ1rDP0131XamuPaU9zpHM+8zMp82ffHL2lvL3fCSGo9fcuSK3XhIF11aMiuq+uLww+ah7nBVCkdU0nowZgXR5C52PVvWEqWFImev05cJfZoNCcvr0ohPZLg8ECFbyw2so=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.37,REQID:3b8956a1-6c99-408c-ab7f-263a0ce9db75,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:6f543d0,CLOUDID:7a4f1590-e2c0-40b0-a8fe-7c7e47299109,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES :1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_ULN X-UUID: 90b6474edb9d11eeb8927bc1f75efef4-20240306 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 887273234; Wed, 06 Mar 2024 17:40:27 +0800 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Wed, 6 Mar 2024 17:40:25 +0800 Received: from mbjsdccf07.gcn.mediatek.inc (10.15.20.246) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Wed, 6 Mar 2024 17:40:24 +0800 From: Chunhui Li To: Petr Mladek , Steven Rostedt , John Ogness , Sergey Senozhatsky , Matthias Brugger , AngeloGioacchino Del Regno CC: , , , , Chunhui Li Subject: [PATCH] printk: fix _entry_ptr build warning Date: Wed, 6 Mar 2024 17:26:47 +0800 Message-ID: <20240306092647.16010-1-chunhui.li@mediatek.com> X-Mailer: git-send-email 2.18.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-Product-Ver: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-AS-Result: No-10--0.708200-8.000000 X-TMASE-MatchedRID: Z2f9DQPf1tkE7MuQrZP2o5dc7I2df+ms75oFMklhrnhGL0g1nVmkYVO4 BD7nLMxnlTJXKqh1ne2/LclmUK1hkobzTO6asfbjyDp+jSvEtWv0O7M3lSnTW5soi2XrUn/Jn6K dMrRsL14qtq5d3cxkNRqXnrxrKCOXFcwn/U1iS4dD30h1PAU6P6/GTBhLbUgDqhGWfuPUaq93ob md2bsjHipWuuOW0EtOvAgHKzqJDgOL28eWhdXbLK92atjiJrAoF0aD5ljt43pMcHZD6gqu7wxMj fifIXfowkvVoA11Twp+3BndfXUhXQ== X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--0.708200-8.000000 X-TMASE-Version: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-SNTS-SMTP: 1CE3B773FBAD0C22075C8D3E0E295523F7348289C887245A523E5D76D60A61202000:8 X-MTK: N Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" We build with Werror and suffer build error when enable CONFIG_PRINTK_INDEX, such as gfp.h:223:2: error: unused variable '_entry_ptr' ratelimit.h:31:3: error: unused variable '_entry_ptr' kallsyms.h:172:2: error: unused variable '_entry_ptr' [-Werror,-Wunused-variable] Fix the warning by appending __attribute__((unused)). Signed-off-by: Chunhui Li --- include/linux/printk.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/printk.h b/include/linux/printk.h index 8ef499ab3c1e..749c1c4257f1 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -392,7 +392,7 @@ struct pi_entry { .level =3D __builtin_constant_p(_level) ? (_level) : NULL, \ .subsys_fmt_prefix =3D _subsys_fmt_prefix,\ }; \ - static const struct pi_entry *_entry_ptr \ + static const struct pi_entry *_entry_ptr __attribute__((unused)) \ __used __section(".printk_index") =3D &_entry; \ } \ } while (0) --=20 2.18.0