From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 E2F6C384242 for ; Thu, 30 Jul 2026 20:32:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785443538; cv=none; b=tjlpPZnRiOMMlLCH7fbROwLyNpK/XYMsMdbOWJiPhUDJpeLa8K+tyFaIg9XFgWBRgoewsFDl+mhH0nXkUdwmgyS9yhs/bmmMAIMZdCGK5QAdzknaArhWybegmMSjHuIEgmxn4BY/j5nXcB0ZPVwo0Lan3A3/iP/rxtQL76VcCg0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785443538; c=relaxed/simple; bh=jnGSj29w9lWFc3OQDO9VAmPnjGRSTbwF02faCxXWB88=; h=Date:To:From:Subject:Message-Id; b=cpaGtLQNG7n3US8YJzziCvVTCI1yE3nkjFy77EjUp+IWcYhqanjP8fUv9y8tnHH7G0IClqAMHzXWTcOPy3kgm2cUyomHhn9MBZL4HiGP/F1rertlYqhVwPl0aie5eln+VX2emgKdEQcgWR34pLF1RQwMZE1x8/YBHLDY0QJZczU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=um8vzGBI; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="um8vzGBI" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3C20F1F000E9; Thu, 30 Jul 2026 20:32:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1785443529; bh=/1T48aBKHcyN536SDS3qLy9RzvVkABLz2oMlTt2sksE=; h=Date:To:From:Subject; b=um8vzGBImkQ+tKWWrovMUlIN7QwpCyPQhB4zHSX9u260vmf2RkJnDA24pCFJyEDDy IdT1GXTBTrAimaU0MGbIWecVqX+YDjH4n8CEelB7VoY3P3BnMiUBIfjeGvug8MKW8X vs4+pnxDGOKhXHASj434WW1up7AHWh1KxAt0NK98= Date: Thu, 30 Jul 2026 13:32:08 -0700 To: mm-commits@vger.kernel.org,pmladek@suse.com,mhiramat@kernel.org,lance.yang@linux.dev,wangxb12@chinatelecom.cn,akpm@linux-foundation.org From: Andrew Morton Subject: + hung_task-update-detect_hung_task_blocker-kconfig-help.patch added to mm-nonmm-unstable branch Message-Id: <20260730203209.3C20F1F000E9@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: hung_task: update DETECT_HUNG_TASK_BLOCKER Kconfig help has been added to the -mm mm-nonmm-unstable branch. Its filename is hung_task-update-detect_hung_task_blocker-kconfig-help.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/hung_task-update-detect_hung_task_blocker-kconfig-help.patch This patch will later appear in the mm-nonmm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: Xibo Wang Subject: hung_task: update DETECT_HUNG_TASK_BLOCKER Kconfig help Date: Thu, 30 Jul 2026 14:18:54 +0800 The help text still says the feature only covers mutexes, but blocker tracking has since been extended to semaphores and rwsems. Update the description to match the supported lock types. Link: https://lore.kernel.org/20260730061854.176547-1-wangxb12@chinatelecom.cn Cc: Petr Mladek Signed-off-by: Xibo Wang Suggested-by: Lance Yang Reviewed-by: Lance Yang Cc: "Masami Hiramatsu (Google)" Cc: Petr Mladek Signed-off-by: Andrew Morton --- lib/Kconfig.debug | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- a/lib/Kconfig.debug~hung_task-update-detect_hung_task_blocker-kconfig-help +++ a/lib/Kconfig.debug @@ -1292,10 +1292,10 @@ config DETECT_HUNG_TASK_BLOCKER depends on !PREEMPT_RT default y help - Say Y here to show the blocker task's stacktrace who acquires - the mutex lock which "hung tasks" are waiting. - This will add overhead a bit but shows suspicious tasks and - call trace if it comes from waiting a mutex. + Say Y here to show a possible blocker task's stacktrace when + a hung task is waiting on a mutex, semaphore, or rwsem. + This will add a bit of overhead but shows suspicious tasks and + call traces for waits on one of these locks. config WQ_WATCHDOG bool "Detect Workqueue Stalls" _ Patches currently in -mm which might be from wangxb12@chinatelecom.cn are hung_task-update-detect_hung_task_blocker-kconfig-help.patch