From: Byungchul Park <byungchul.park@lge.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: hamohammed.sa@gmail.com, jack@suse.cz, peterz@infradead.org,
daniel.vetter@ffwll.ch, amir73il@gmail.com, david@fromorbit.com,
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Theodore Ts'o <tytso@mit.edu>,
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akpm@linux-foundation.org, torvalds@linux-foundation.org
Subject: Re: [PATCH 00/16] DEPT(Dependency Tracker)
Date: Sat, 19 Feb 2022 19:05:19 +0900 [thread overview]
Message-ID: <20220219100519.GB10342@X58A-UD3R> (raw)
In-Reply-To: <Yg6AigFqdhdO5/ya@casper.infradead.org>
On Thu, Feb 17, 2022 at 05:06:18PM +0000, Matthew Wilcox wrote:
> On Thu, Feb 17, 2022 at 12:00:05PM -0500, Steven Rostedt wrote:
> > On Thu, 17 Feb 2022 10:51:09 -0500
> > "Theodore Ts'o" <tytso@mit.edu> wrote:
> >
> > > I know that you're trying to help us, but this tool needs to be far
> > > better than Lockdep before we should think about merging it. Even if
> > > it finds 5% more potential deadlocks, if it creates 95% more false
> > > positive reports --- and the ones it finds are crazy things that
> > > rarely actually happen in practice, are the costs worth the benefits?
> > > And who is bearing the costs, and who is receiving the benefits?
> >
> > I personally believe that there's potential that this can be helpful and we
> > will want to merge it.
> >
> > But, what I believe Ted is trying to say is, if you do not know if the
> > report is a bug or not, please do not ask the maintainers to determine it
> > for you. This is a good opportunity for you to look to see why your tool
> > reported an issue, and learn that subsystem. Look at if this is really a
> > bug or not, and investigate why.
>
> I agree with Steven here, to the point where I'm willing to invest some
> time being a beta-tester for this, so if you focus your efforts on
> filesystem/mm kinds of problems, I can continue looking at them and
> tell you what's helpful and what's unhelpful in the reports.
I appreciate your support. I'll do my best to make it *THE* perfect tool
for that purpose. I'd feel great if it helps a lot and saves you guys'
time in advance, it might not for now tho.
Thanks,
Byungchul
next prev parent reply other threads:[~2022-02-20 8:44 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-17 10:57 [PATCH 00/16] DEPT(Dependency Tracker) Byungchul Park
2022-02-17 10:57 ` [PATCH 01/16] llist: Move llist_{head,node} definition to types.h Byungchul Park
2022-02-17 10:57 ` [PATCH 02/16] dept: Implement Dept(Dependency Tracker) Byungchul Park
2022-02-17 15:54 ` Steven Rostedt
2022-02-17 17:36 ` Steven Rostedt
2022-02-18 6:09 ` Byungchul Park
2022-02-17 10:57 ` [PATCH 03/16] dept: Embed Dept data in Lockdep Byungchul Park
2022-02-17 10:57 ` [PATCH 04/16] dept: Apply Dept to spinlock Byungchul Park
2022-02-17 10:57 ` [PATCH 05/16] dept: Apply Dept to mutex families Byungchul Park
2022-02-17 10:57 ` [PATCH 06/16] dept: Apply Dept to rwlock Byungchul Park
2022-02-17 10:57 ` [PATCH 07/16] dept: Apply Dept to wait_for_completion()/complete() Byungchul Park
2022-02-17 10:57 ` [PATCH 08/16] dept: Apply Dept to seqlock Byungchul Park
2022-02-17 10:57 ` [PATCH 09/16] dept: Apply Dept to rwsem Byungchul Park
2022-02-17 10:57 ` [PATCH 10/16] dept: Add proc knobs to show stats and dependency graph Byungchul Park
2022-02-17 15:55 ` Steven Rostedt
2022-02-17 10:57 ` [PATCH 11/16] dept: Introduce split map concept and new APIs for them Byungchul Park
2022-02-17 10:57 ` [PATCH 12/16] dept: Apply Dept to wait/event of PG_{locked, writeback} Byungchul Park
2022-02-17 10:57 ` [PATCH 13/16] dept: Apply SDT to swait Byungchul Park
2022-02-17 10:57 ` [PATCH 14/16] dept: Apply SDT to wait(waitqueue) Byungchul Park
2022-02-17 10:57 ` [PATCH 15/16] locking/lockdep, cpu/hotplus: Use a weaker annotation in AP thread Byungchul Park
2022-02-17 10:57 ` [PATCH 16/16] dept: Distinguish each syscall context from another Byungchul Park
2022-02-17 11:10 ` Report 1 in ext4 and journal based on v5.17-rc1 Byungchul Park
2022-02-17 11:10 ` Report 2 " Byungchul Park
2022-02-21 19:02 ` Jan Kara
2022-02-23 0:35 ` Byungchul Park
2022-02-23 14:48 ` Jan Kara
2022-02-24 1:11 ` Byungchul Park
2022-02-24 10:22 ` Jan Kara
2022-02-28 9:28 ` Byungchul Park
2022-02-28 10:14 ` Jan Kara
2022-02-28 21:25 ` Theodore Ts'o
2022-03-03 1:36 ` Byungchul Park
2022-03-03 1:00 ` Byungchul Park
2022-03-03 2:32 ` Theodore Ts'o
2022-03-03 5:23 ` Byungchul Park
2022-03-03 14:36 ` Theodore Ts'o
2022-03-04 0:42 ` Byungchul Park
2022-03-05 3:26 ` Theodore Ts'o
2022-03-05 14:15 ` Byungchul Park
2022-03-05 15:05 ` Joel Fernandes
2022-03-07 2:43 ` Byungchul Park
2022-03-04 3:20 ` Byungchul Park
2022-03-05 3:40 ` Theodore Ts'o
2022-03-05 14:55 ` Byungchul Park
2022-03-05 15:12 ` Reimar Döffinger
2022-03-06 3:30 ` Theodore Ts'o
2022-03-06 10:51 ` Byungchul Park
2022-03-06 14:19 ` Theodore Ts'o
2022-03-10 1:45 ` Byungchul Park
2022-03-03 9:54 ` Jan Kara
2022-03-04 1:56 ` Byungchul Park
2022-02-17 13:27 ` Report 1 " Matthew Wilcox
2022-02-18 0:41 ` Byungchul Park
2022-02-22 8:27 ` Jan Kara
2022-02-23 1:40 ` Byungchul Park
2022-02-23 3:30 ` Byungchul Park
2022-02-17 15:51 ` [PATCH 00/16] DEPT(Dependency Tracker) Theodore Ts'o
2022-02-17 17:00 ` Steven Rostedt
2022-02-17 17:06 ` Matthew Wilcox
2022-02-19 10:05 ` Byungchul Park [this message]
2022-02-18 4:19 ` Theodore Ts'o
2022-02-19 10:34 ` Byungchul Park
2022-02-19 10:18 ` Byungchul Park
2022-02-19 9:54 ` Byungchul Park
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