From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 27CE2C433F5 for ; Fri, 22 Apr 2022 09:29:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=OGKKvk8u2HVin8yrZ5BsHTMEep9rDw/i55psejQaR9U=; b=AF9kvjhsQyRMTH 1GOnY+l/loZXla+DT9cW6ULLyW+kMJkTkuHMo6dffGNeYsgtKS9UGGYdTlpvpg3VG4hUxCwRqLMao 6/z1XwASF1PamcakTZ8QbbtXsqZ3tzCjt0mMkHEgVxuKcpAZQdRX5mY4I7T2Q8vqE/0zhvDcFlAaP zBFXCiTNCdkjThLs/zmbAYM4ojiNAyha9JLTmKLmNf+vKki/LgpV0R8Zy9sqMu4Z5TQb3m+Uqui6k BSE/qtZgYoUmY+l7D/mxh5felve5d4JquBhgWP91bYR/1PQnqujr4yx9ay90gETs83xYEHqaSEFyR XBJPN6Dpu6p9SNJYzjSA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nhpaA-00HPhs-CF; Fri, 22 Apr 2022 09:28:06 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nhpa7-00HPgB-4V; Fri, 22 Apr 2022 09:28:04 +0000 X-UUID: 30aaa94e3cf740a9856421e5e6096770-20220422 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.4, REQID:557b4e70-9540-4c50-84bd-cda0043913e9, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACTI ON:release,TS:0 X-CID-META: VersionHash:faefae9, CLOUDID:a7f9c4ef-06b0-4305-bfbf-554bfc9d151a, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,File:nil,QS:0,BEC:nil X-UUID: 30aaa94e3cf740a9856421e5e6096770-20220422 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 444827497; Fri, 22 Apr 2022 02:27:57 -0700 Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 22 Apr 2022 02:27:56 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 22 Apr 2022 17:27:54 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 22 Apr 2022 17:27:54 +0800 From: Mark-PK Tsai To: CC: , , , , , , Subject: [PATCH v3 0/2] tracing: make tracer_init_tracefs initcall asynchronous Date: Fri, 22 Apr 2022 17:27:51 +0800 Message-ID: <20220422092751.19386-1-mark-pk.tsai@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220323152257.7871-1-mark-pk.tsai@mediatek.com> References: <20220323152257.7871-1-mark-pk.tsai@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220422_022803_203796_3C6D7690 X-CRM114-Status: GOOD ( 11.79 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Steve, Could you please help to review this patch? Sorry to disturb you, I just want to make sure it has not been forgotten. > Move trace_eval_init() to subsys_initcall to make it start > earlier. > And to avoid tracer_init_tracefs being blocked by > trace_event_sem which trace_eval_init() hold [1], > queue tracer_init_tracefs() to eval_map_wq to let > the two works being executed sequentially. > > It can speed up the initialization of kernel as result > of making tracer_init_tracefs asynchronous. > > On my arm64 platform, it reduce ~20ms of 125ms which total > time do_initcalls spend. > > Mark-PK Tsai (2): > tracing: Avoid adding tracer option before update_tracer_options > tracing: make tracer_init_tracefs initcall asynchronous > > kernel/trace/trace.c | 38 ++++++++++++++++++++++++++++---------- > 1 file changed, 28 insertions(+), 10 deletions(-) > > -- > 2.18.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel