From nobody Sun Sep 7 14:46:16 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1036EEB64DD for ; Thu, 20 Jul 2023 08:05:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229952AbjGTIFk (ORCPT ); Thu, 20 Jul 2023 04:05:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48054 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230261AbjGTIFh (ORCPT ); Thu, 20 Jul 2023 04:05:37 -0400 Received: from out-6.mta0.migadu.com (out-6.mta0.migadu.com [IPv6:2001:41d0:1004:224b::6]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A1050213C for ; Thu, 20 Jul 2023 01:05:35 -0700 (PDT) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1689840333; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=U7SNqNg8l9jcFOH2jbUPGRpUOcJQOOmYIXLh9NsQCGE=; b=PzprmWEumOxHgWMjAnQUlo//3iHng93GvAUVcRI8HM47zTYzWx+C8g3YQuEyikGNdx45mQ ireIT+f9zZXtZZvez4TjWerWJwneQnBLYUL4KObDLiLOA6sgIDZzo95lusLeFS3gRoQQgc FpawkfcLM5qRnRhlMB5fB4clTxfPFAc= From: Yajun Deng To: mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com Cc: linux-kernel@vger.kernel.org, Yajun Deng Subject: [PATCH] sched/debug: Print tgid in sched_show_task() Date: Thu, 20 Jul 2023 16:05:16 +0800 Message-Id: <20230720080516.1515297-1-yajun.deng@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Multiple blocked tasks are printed when the system hangs. They may have the same parent pid, but belong to different task groups. Printing tgid lets users better know whether these tasks are from the same task group or not. Signed-off-by: Yajun Deng --- kernel/sched/core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 9020d34b22fe..80feede4e7c3 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -9187,9 +9187,9 @@ void sched_show_task(struct task_struct *p) if (pid_alive(p)) ppid =3D task_pid_nr(rcu_dereference(p->real_parent)); rcu_read_unlock(); - pr_cont(" stack:%-5lu pid:%-5d ppid:%-6d flags:0x%08lx\n", - free, task_pid_nr(p), ppid, - read_task_thread_flags(p)); + pr_cont(" stack:%-5lu pid:%-5d tgid:%-5d ppid:%-6d flags:0x%08lx\n", + free, task_pid_nr(p), task_tgid_nr(p), + ppid, read_task_thread_flags(p)); =20 print_worker_info(KERN_INFO, p); print_stop_info(KERN_INFO, p); --=20 2.25.1