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 X-Spam-Level: X-Spam-Status: No, score=-11.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E2AD3C388F7 for ; Tue, 10 Nov 2020 14:19:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A8FC6207D3 for ; Tue, 10 Nov 2020 14:19:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731940AbgKJOT2 (ORCPT ); Tue, 10 Nov 2020 09:19:28 -0500 Received: from mailgw01.mediatek.com ([210.61.82.183]:57323 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1730231AbgKJOT2 (ORCPT ); Tue, 10 Nov 2020 09:19:28 -0500 X-UUID: 17fc65534dbe4eb18943aab9882922cb-20201110 X-UUID: 17fc65534dbe4eb18943aab9882922cb-20201110 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.14 Build 0819 with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 400986890; Tue, 10 Nov 2020 22:19:18 +0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 10 Nov 2020 22:19:16 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 10 Nov 2020 22:19:17 +0800 From: Frankie Chang To: Greg Kroah-Hartman CC: Todd Kjos , Joel Fernandes , Martijn Coenen , =?UTF-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= , Christian Brauner , , , Jian-Min Liu Subject: [PATCH v12] binder: add transaction latency tracer Date: Tue, 10 Nov 2020 22:19:12 +0800 Message-ID: <1605017955-18027-1-git-send-email-Frankie.Chang@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1604995521.14886.9.camel@mtkswgap22> References: <1604995521.14886.9.camel@mtkswgap22> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Change from v12: - rebase. Change from v11: - rebase. Change from v10: - replace timespec64 with ktime_t. - fix build warning. Change from v9: - rename timestamp to ts in binder_internal.h for conciseness. - change timeval to timespec64 in binder_internal.h Change from v8: - change rtc_time_to_tm to rtc_time64_to_tm. - change timeval to __kernel_old_timeval due to https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c766d1472c70d25ad475cf56042af1652e792b23 - export tracepoint symbol for binder_txn_latency_* which binder_transaction_latency_tracer to be ko needed. Change from v7: - Use the passed-in values instead of accessing via t->from/to_proc/to_thread for trace_binder_txn_latency_free, when trace_binder_txn_latency_free_enable() return true. - make a helper function to do the above. Change from v6: - change CONFIG_BINDER_TRANSACTION_LATENCY_TRACKING type from bool to tristate - add comments to @timestamp and @tv under struct binder_transaction - make binder_txn_latency threshold configurable - enhance lock protection Change from v5: - change config name to the proper one, CONFIG_BINDER_TRANSACTION_LATENCY_TRACKING. - change tracepoint name to more descriptive one, trace_binder_txn_latency_(alloc|info|free) - enhance some lock protection. Change from v4: - split up into patch series. Change from v3: - use tracepoints for binder_update_info and print_binder_transaction_ext, instead of custom registration functions. Change from v2: - create transaction latency module to monitor slow transaction. Change from v1: - first patchset. Frankie.Chang (3): binder: move structs from core file to header file binder: add trace at free transaction. binder: add transaction latency tracer drivers/android/Kconfig | 8 + drivers/android/Makefile | 1 + drivers/android/binder.c | 430 ++---------------------- drivers/android/binder_internal.h | 419 +++++++++++++++++++++++ drivers/android/binder_latency_tracer.c | 107 ++++++ drivers/android/binder_trace.h | 49 +++ 6 files changed, 608 insertions(+), 406 deletions(-) create mode 100644 drivers/android/binder_latency_tracer.c