From: Mark Brown <broonie@kernel.org>
To: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: ksummit-discuss@lists.linuxfoundation.org,
Carlos O'Donell <carlos@redhat.com>,
linux-api@vger.kernel.org, Shuah Khan <shuahkh@osg.samsung.com>,
Thorsten Leemhuis <linux@leemhuis.info>
Subject: Re: [Ksummit-discuss] [MAINTAINERS SUMMIT] & [TECH TOPIC] Improve regression tracking
Date: Wed, 5 Jul 2017 16:20:26 +0100 [thread overview]
Message-ID: <20170705152026.rkw73q2f6xmiju37@sirena.org.uk> (raw)
In-Reply-To: <1499267389.3668.16.camel@HansenPartnership.com>
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On Wed, Jul 05, 2017 at 08:09:49AM -0700, James Bottomley wrote:
> On Wed, 2017-07-05 at 10:56 -0400, Steven Rostedt wrote:
> > James Bottomley <James.Bottomley@HansenPartnership.com> wrote:
> > > you're protecting was accessed outside the lock, which is the usual
> > > source of concurrency problems. In other words lockdep is useful
> > > but it's not a panacea.
> > Still not an excuse to not have lockdep enabled during tests.
> OK, what makes you think lockdep isn't enabled? Since Kconfig is so
> complex, I usually use a distro config ... they have it enabled (or at
> least openSUSE does), so it's enabled for everything I do.
Yeah, I see enough reports with it in embedded contexts to make me think
people use it there. I know I tend to have it turned on most of the
time. The concurrency stuff I'm thinking of here is more the things
you're mentioning with just not taking locks at all when they are needed
or concurrency with hardware.
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WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: James Bottomley
<James.Bottomley-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
Cc: Steven Rostedt <rostedt-nx8X9YLhiw1AfugRpC6u6w@public.gmane.org>,
Carlos O'Donell <carlos-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Shuah Khan <shuahkh-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>,
ksummit-discuss-cunTk1MwBs98uUxBSJOaYoYkZiVZrdSR2LY78lusg7I@public.gmane.org,
Thorsten Leemhuis <linux-rCxcAJFjeRkk+I/owrrOrA@public.gmane.org>
Subject: Re: [Ksummit-discuss] [MAINTAINERS SUMMIT] & [TECH TOPIC] Improve regression tracking
Date: Wed, 5 Jul 2017 16:20:26 +0100 [thread overview]
Message-ID: <20170705152026.rkw73q2f6xmiju37@sirena.org.uk> (raw)
In-Reply-To: <1499267389.3668.16.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
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On Wed, Jul 05, 2017 at 08:09:49AM -0700, James Bottomley wrote:
> On Wed, 2017-07-05 at 10:56 -0400, Steven Rostedt wrote:
> > James Bottomley <James.Bottomley-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org> wrote:
> > > you're protecting was accessed outside the lock, which is the usual
> > > source of concurrency problems. In other words lockdep is useful
> > > but it's not a panacea.
> > Still not an excuse to not have lockdep enabled during tests.
> OK, what makes you think lockdep isn't enabled? Since Kconfig is so
> complex, I usually use a distro config ... they have it enabled (or at
> least openSUSE does), so it's enabled for everything I do.
Yeah, I see enough reports with it in embedded contexts to make me think
people use it there. I know I tend to have it turned on most of the
time. The concurrency stuff I'm thinking of here is more the things
you're mentioning with just not taking locks at all when they are needed
or concurrency with hardware.
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next prev parent reply other threads:[~2017-07-05 15:20 UTC|newest]
Thread overview: 144+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-02 17:51 [Ksummit-discuss] [MAINTAINERS SUMMIT] & [TECH TOPIC] Improve regression tracking Thorsten Leemhuis
2017-07-03 16:30 ` Steven Rostedt
2017-07-03 16:30 ` Steven Rostedt
2017-07-03 18:50 ` Dan Williams
2017-07-03 18:50 ` Dan Williams
2017-07-04 19:03 ` Thorsten Leemhuis
2017-07-04 19:03 ` Thorsten Leemhuis
2017-07-05 12:45 ` Steven Rostedt
2017-07-05 12:45 ` Steven Rostedt
2017-07-05 13:09 ` Carlos O'Donell
2017-07-05 13:09 ` Carlos O'Donell
2017-07-05 13:27 ` Steven Rostedt
2017-07-05 13:27 ` Steven Rostedt
2017-07-05 14:06 ` Greg KH
2017-07-05 14:06 ` Greg KH
2017-07-05 14:28 ` Carlos O'Donell
2017-07-05 14:28 ` Carlos O'Donell
2017-07-05 14:33 ` Steven Rostedt
2017-07-05 14:33 ` Steven Rostedt
2017-07-05 14:52 ` Mark Brown
2017-07-05 14:52 ` Mark Brown
2017-07-05 15:08 ` Carlos O'Donell
2017-07-05 15:08 ` Carlos O'Donell
2017-07-05 16:10 ` Steven Rostedt
2017-07-05 16:10 ` Steven Rostedt
2017-07-06 11:34 ` Laurent Pinchart
2017-07-06 11:34 ` Laurent Pinchart
2017-07-09 13:46 ` Thorsten Leemhuis
2017-07-09 13:46 ` Thorsten Leemhuis
2017-07-05 14:33 ` Mark Brown
2017-07-05 14:33 ` Mark Brown
2017-07-05 14:36 ` Steven Rostedt
2017-07-05 14:36 ` Steven Rostedt
2017-07-05 14:50 ` James Bottomley
2017-07-05 14:50 ` James Bottomley
2017-07-05 14:56 ` Steven Rostedt
2017-07-05 14:56 ` Steven Rostedt
2017-07-05 15:09 ` James Bottomley
2017-07-05 15:09 ` James Bottomley
2017-07-05 15:20 ` Mark Brown [this message]
2017-07-05 15:20 ` Mark Brown
2017-07-05 15:40 ` Geert Uytterhoeven
2017-07-05 15:40 ` Geert Uytterhoeven
2017-07-05 15:20 ` Steven Rostedt
2017-07-05 15:20 ` Steven Rostedt
2017-07-05 15:32 ` James Bottomley
2017-07-05 15:32 ` James Bottomley
2017-07-05 15:43 ` Steven Rostedt
2017-07-05 15:43 ` Steven Rostedt
2017-07-05 18:24 ` Daniel Vetter
2017-07-05 18:24 ` Daniel Vetter
2017-07-05 18:17 ` Daniel Vetter
2017-07-05 18:17 ` Daniel Vetter
2017-07-05 15:16 ` Guenter Roeck
2017-07-05 15:16 ` Guenter Roeck
2017-07-05 15:27 ` Steven Rostedt
2017-07-05 15:27 ` Steven Rostedt
2017-07-05 15:36 ` James Bottomley
2017-07-05 15:36 ` James Bottomley
2017-07-05 16:04 ` Steven Rostedt
2017-07-05 16:04 ` Steven Rostedt
2017-07-05 16:58 ` James Bottomley
2017-07-05 16:58 ` James Bottomley
2017-07-05 17:07 ` Steven Rostedt
2017-07-05 17:07 ` Steven Rostedt
2017-07-05 16:48 ` Guenter Roeck
2017-07-05 16:48 ` Guenter Roeck
2017-07-05 16:58 ` Dan Williams
2017-07-05 16:58 ` Dan Williams
2017-07-05 17:02 ` Steven Rostedt
2017-07-05 17:02 ` Steven Rostedt
2017-07-06 9:28 ` Mark Brown
2017-07-06 9:28 ` Mark Brown
2017-07-06 9:41 ` Daniel Vetter
2017-07-06 9:41 ` Daniel Vetter
2017-07-06 14:53 ` Theodore Ts'o
2017-07-06 14:53 ` Theodore Ts'o
2017-07-06 21:28 ` Daniel Vetter
2017-07-06 21:28 ` Daniel Vetter
2017-07-06 14:48 ` James Bottomley
2017-07-06 14:48 ` James Bottomley
2017-07-07 10:03 ` Mark Brown
2017-07-07 10:03 ` Mark Brown
2017-07-31 16:54 ` Eric W. Biederman
2017-07-31 16:54 ` Eric W. Biederman
2017-07-31 20:11 ` Steven Rostedt
2017-07-31 20:11 ` Steven Rostedt
2017-07-31 20:12 ` Eric W. Biederman
2017-07-31 20:12 ` Eric W. Biederman
2017-08-02 16:53 ` Shuah Khan
2017-08-02 16:53 ` Shuah Khan
2017-08-02 17:33 ` Eric W. Biederman
2017-08-02 17:33 ` Eric W. Biederman
2017-08-02 17:46 ` Shuah Khan
2017-08-02 17:46 ` Shuah Khan
2017-08-02 17:58 ` Shuah Khan
2017-08-02 17:58 ` Shuah Khan
2017-08-02 18:04 ` Eric W. Biederman
2017-08-02 18:04 ` Eric W. Biederman
2017-08-02 18:23 ` Randy Dunlap
2017-08-02 18:23 ` Randy Dunlap
2017-08-02 18:42 ` Shuah Khan
2017-08-02 18:42 ` Shuah Khan
2017-08-03 3:03 ` Theodore Ts'o
2017-08-03 3:03 ` Theodore Ts'o
2017-08-03 17:42 ` Bird, Timothy
2017-08-03 17:42 ` Bird, Timothy
2017-08-03 22:11 ` Shuah Khan
2017-08-03 22:11 ` Shuah Khan
2017-08-03 18:51 ` Shuah Khan
2017-08-03 18:51 ` Shuah Khan
2017-08-04 1:15 ` Theodore Ts'o
2017-08-04 1:15 ` Theodore Ts'o
2017-07-07 3:33 ` Fengguang Wu
2017-07-07 3:33 ` Fengguang Wu
2017-07-07 4:52 ` Frank Rowand
2017-07-07 4:52 ` Frank Rowand
2017-07-05 15:32 ` Greg KH
2017-07-05 15:32 ` Greg KH
2017-07-05 15:36 ` Carlos O'Donell
2017-07-05 15:36 ` Carlos O'Donell
2017-07-05 15:52 ` Steven Rostedt
2017-07-05 15:52 ` Steven Rostedt
2017-07-05 18:42 ` Greg KH
2017-07-05 18:42 ` Greg KH
2017-07-05 18:29 ` Daniel Vetter
2017-07-05 18:29 ` Daniel Vetter
2017-07-06 22:24 ` Shuah Khan
2017-07-06 22:24 ` Shuah Khan
2017-07-06 22:32 ` Steven Rostedt
2017-07-06 22:32 ` Steven Rostedt
2017-07-06 22:40 ` Shuah Khan
2017-07-06 22:40 ` Shuah Khan
2017-07-05 16:54 ` Dan Williams
2017-07-05 16:54 ` Dan Williams
2017-07-05 18:45 ` Greg KH
2017-07-05 18:45 ` Greg KH
2017-07-05 19:47 ` Dan Williams
2017-07-05 19:47 ` Dan Williams
2017-07-05 14:06 ` Carlos O'Donell
2017-07-05 14:06 ` Carlos O'Donell
2017-07-05 15:47 ` Mark Brown
2017-07-05 15:47 ` Mark Brown
2017-07-07 6:15 ` Andrei Vagin
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