From: Thomas Gleixner <tglx@linutronix.de>
To: Steven Rostedt <rostedt@goodmis.org>, Ingo Molnar <mingo@kernel.org>
Cc: Byungchul Park <byungchul.park@lge.com>,
torvalds@linux-foundation.org, peterz@infradead.org,
mingo@redhat.com, will@kernel.org, linux-kernel@vger.kernel.org,
joel@joelfernandes.org, alexander.levin@microsoft.com,
daniel.vetter@ffwll.ch, chris@chris-wilson.co.uk,
duyuyang@gmail.com, johannes.berg@intel.com, tj@kernel.org,
tytso@mit.edu, willy@infradead.org, david@fromorbit.com,
amir73il@gmail.com, bfields@fieldses.org,
gregkh@linuxfoundation.org, kernel-team@lge.com
Subject: Re: [RFC] Are you good with Lockdep?
Date: Thu, 12 Nov 2020 00:16:50 +0100 [thread overview]
Message-ID: <87d00jo55p.fsf@nanos.tec.linutronix.de> (raw)
In-Reply-To: <20201111093609.1bd2b637@gandalf.local.home>
On Wed, Nov 11 2020 at 09:36, Steven Rostedt wrote:
> Ingo Molnar <mingo@kernel.org> wrote:
>> Not sure I understand the "problem 2)" outlined here, but I'm looking
>> forward to your patchset!
>>
> I think I understand it. For things like completions and other "wait for
> events" we have lockdep annotation, but it is rather awkward to implement.
> Having something that says "lockdep_wait_event()" and
> "lockdep_exec_event()" wrappers would be useful.
Wrappers which make things simpler are always useful, but the lack of
wrappers does not justify a wholesale replacement.
We all know that lockdep has limitations but I yet have to see a proper
argument why this can't be solved incrementaly on top of the existing
infrastructure.
That said, I'm not at all interested in a wholesale replacement of
lockdep which will take exactly the same amount of time to stabilize and
weed out the shortcomings again.
Thanks,
tglx
next prev parent reply other threads:[~2020-11-12 1:44 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-11 5:05 [RFC] Are you good with Lockdep? Byungchul Park
2020-11-11 10:54 ` Ingo Molnar
2020-11-11 14:36 ` Steven Rostedt
2020-11-11 23:16 ` Thomas Gleixner [this message]
2020-11-12 8:10 ` Byungchul Park
2020-11-12 14:26 ` Steven Rostedt
2020-11-12 14:52 ` Matthew Wilcox
2020-11-16 8:57 ` Byungchul Park
2020-11-16 15:37 ` Matthew Wilcox
2020-11-18 1:45 ` Boqun Feng
2020-11-18 3:30 ` Matthew Wilcox
2020-11-23 13:15 ` Byungchul Park
2020-11-12 14:58 ` Byungchul Park
2020-11-16 9:05 ` Byungchul Park
2020-11-23 10:45 ` Byungchul Park
2020-11-12 10:32 ` Byungchul Park
2020-11-12 13:56 ` Daniel Vetter
2020-11-16 8:45 ` Byungchul Park
2020-11-12 6:15 ` Byungchul Park
2020-11-12 8:51 ` Byungchul Park
2020-11-12 9:46 ` Byungchul Park
2020-11-23 11:05 ` [RFC] Dept(Dependency Tracker) Implementation Byungchul Park
2020-11-23 11:36 ` [RFC 1/6] dept: Implement Dept(Dependency Tracker) Byungchul Park
2020-11-23 11:36 ` [RFC 2/6] dept: Apply Dept to spinlock Byungchul Park
2020-11-23 11:36 ` [RFC 3/6] dept: Apply Dept to mutex families Byungchul Park
2020-11-23 11:36 ` [RFC 4/6] dept: Apply Dept to rwlock Byungchul Park
2020-11-23 11:36 ` [RFC 5/6] dept: Apply Dept to wait_for_completion()/complete() Byungchul Park
2020-11-23 11:36 ` [RFC 6/6] dept: Assign custom dept_keys or disable to avoid false positives Byungchul Park
2020-11-23 12:29 ` [RFC] Dept(Dependency Tracker) Implementation Byungchul Park
2020-11-23 11:13 ` [RFC] Dept(Dependency Tracker) Report Example Byungchul Park
2020-11-23 12:14 ` Byungchul Park
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