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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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  parent reply	other threads:[~2017-07-05 15:20 UTC|newest]

Thread overview: 71+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <576cea07-770a-4864-c3f5-0832ff211e94@leemhuis.info>
     [not found] ` <576cea07-770a-4864-c3f5-0832ff211e94-rCxcAJFjeRkk+I/owrrOrA@public.gmane.org>
2017-07-03 16:30   ` [Ksummit-discuss] [MAINTAINERS SUMMIT] & [TECH TOPIC] Improve regression tracking Steven Rostedt
     [not found]     ` <20170703123025.7479702e-f9ZlEuEWxVcJvu8Pb33WZ0EMvNT87kid@public.gmane.org>
2017-07-03 18:50       ` Dan Williams
2017-07-04 19:03       ` Thorsten Leemhuis
     [not found]         ` <ad94dc65-cc9c-f4f1-27c1-5a48603c7f59-rCxcAJFjeRkk+I/owrrOrA@public.gmane.org>
2017-07-05 12:45           ` Steven Rostedt
     [not found]             ` <20170705084528.67499f8c-f9ZlEuEWxVcJvu8Pb33WZ0EMvNT87kid@public.gmane.org>
2017-07-05 13:09               ` Carlos O'Donell
     [not found]                 ` <4080ecc7-1aa8-2940-f230-1b79d656cdb4-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-07-05 13:27                   ` Steven Rostedt
     [not found]                     ` <20170705092757.63dc2328-f9ZlEuEWxVcJvu8Pb33WZ0EMvNT87kid@public.gmane.org>
2017-07-05 14:06                       ` Greg KH
     [not found]                         ` <20170705140607.GA30187-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2017-07-05 14:28                           ` Carlos O'Donell
2017-07-05 14:33                           ` Steven Rostedt
     [not found]                             ` <20170705103335.0cbd9984-f9ZlEuEWxVcJvu8Pb33WZ0EMvNT87kid@public.gmane.org>
2017-07-05 14:52                               ` Mark Brown
2017-07-05 15:08                               ` Carlos O'Donell
     [not found]                                 ` <8c6843e8-73d9-a898-0366-0b72dfeb79a2-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-07-05 16:10                                   ` Steven Rostedt
     [not found]                                     ` <20170705121000.5430d7d0-f9ZlEuEWxVcJvu8Pb33WZ0EMvNT87kid@public.gmane.org>
2017-07-06 11:34                                       ` Laurent Pinchart
2017-07-09 13:46                               ` Thorsten Leemhuis
2017-07-05 14:33                           ` Mark Brown
     [not found]                             ` <20170705143341.oees22k2snhtmkxo-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2017-07-05 14:36                               ` Steven Rostedt
     [not found]                                 ` <20170705103658.226099c6-f9ZlEuEWxVcJvu8Pb33WZ0EMvNT87kid@public.gmane.org>
2017-07-05 14:50                                   ` James Bottomley
     [not found]                                     ` <1499266228.3668.10.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-07-05 14:56                                       ` Steven Rostedt
     [not found]                                         ` <20170705105651.5da9c969-f9ZlEuEWxVcJvu8Pb33WZ0EMvNT87kid@public.gmane.org>
2017-07-05 15:09                                           ` James Bottomley
     [not found]                                             ` <1499267389.3668.16.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-07-05 15:20                                               ` Mark Brown [this message]
     [not found]                                                 ` <20170705152026.rkw73q2f6xmiju37-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2017-07-05 15:40                                                   ` Geert Uytterhoeven
2017-07-05 15:20                                               ` Steven Rostedt
     [not found]                                                 ` <20170705112047.23ee09f6-f9ZlEuEWxVcJvu8Pb33WZ0EMvNT87kid@public.gmane.org>
2017-07-05 15:32                                                   ` James Bottomley
     [not found]                                                     ` <1499268748.3668.20.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-07-05 15:43                                                       ` Steven Rostedt
2017-07-05 18:24                                               ` Daniel Vetter
2017-07-05 18:17                                   ` Daniel Vetter
2017-07-05 15:16                           ` Guenter Roeck
     [not found]                             ` <a462fb3b-a6d4-e969-b301-b404981de224-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
2017-07-05 15:27                               ` Steven Rostedt
     [not found]                                 ` <20170705112707.54d7f345-f9ZlEuEWxVcJvu8Pb33WZ0EMvNT87kid@public.gmane.org>
2017-07-05 15:36                                   ` James Bottomley
     [not found]                                     ` <1499269015.3668.25.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-07-05 16:04                                       ` Steven Rostedt
     [not found]                                         ` <20170705120459.41e81f7b-f9ZlEuEWxVcJvu8Pb33WZ0EMvNT87kid@public.gmane.org>
2017-07-05 16:58                                           ` James Bottomley
     [not found]                                             ` <1499273908.3668.30.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-07-05 17:07                                               ` Steven Rostedt
2017-07-05 16:48                                   ` Guenter Roeck
     [not found]                                     ` <c782a15a-4e73-7373-ca66-5b55e9406059-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
2017-07-05 16:58                                       ` Dan Williams
2017-07-05 17:02                                       ` Steven Rostedt
     [not found]                                         ` <20170705130200.7c653f61-f9ZlEuEWxVcJvu8Pb33WZ0EMvNT87kid@public.gmane.org>
2017-07-06  9:28                                           ` Mark Brown
     [not found]                                             ` <20170706092836.ifcnc2qqwufndhdl-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2017-07-06  9:41                                               ` Daniel Vetter
     [not found]                                                 ` <CAKMK7uFH+Kz8Mdph=J_FCZ4LC3tzoOmwNJPpSO+snTz6p0Xz+w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-07-06 14:53                                                   ` Theodore Ts'o
     [not found]                                                     ` <20170706145346.6w2uzcf7xacbr3or-AKGzg7BKzIDYtjvyW6yDsg@public.gmane.org>
2017-07-06 21:28                                                       ` Daniel Vetter
2017-07-06 14:48                                               ` James Bottomley
     [not found]                                                 ` <1499352485.2765.14.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-07-07 10:03                                                   ` Mark Brown
2017-07-31 16:54                                           ` Eric W. Biederman
     [not found]                                             ` <87zibkzgve.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2017-07-31 20:11                                               ` Steven Rostedt
     [not found]                                                 ` <20170731161123.4d1e80ac-f9ZlEuEWxVcJvu8Pb33WZ0EMvNT87kid@public.gmane.org>
2017-07-31 20:12                                                   ` Eric W. Biederman
2017-08-02 16:53                                               ` Shuah Khan
     [not found]                                                 ` <fb399eba-91eb-21a5-e3f5-c3f919061c12-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>
2017-08-02 17:33                                                   ` Eric W. Biederman
     [not found]                                                     ` <87lgn1nac8.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2017-08-02 17:46                                                       ` Shuah Khan
     [not found]                                                         ` <61093c3f-6ad0-c033-a524-f2624f8d55ba-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>
2017-08-02 17:58                                                           ` Shuah Khan
2017-08-02 18:04                                                           ` Eric W. Biederman
     [not found]                                                             ` <87r2wtluc1.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2017-08-02 18:23                                                               ` Randy Dunlap
2017-08-02 18:42                                                               ` Shuah Khan
     [not found]                                                                 ` <92c31d6f-f98d-c764-eeec-bd0a2316d769-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>
2017-08-03  3:03                                                                   ` Theodore Ts'o
     [not found]                                                                     ` <20170803030327.gf7pl7foer3abdpe-AKGzg7BKzIDYtjvyW6yDsg@public.gmane.org>
2017-08-03 17:42                                                                       ` Bird, Timothy
     [not found]                                                                         ` <ECADFF3FD767C149AD96A924E7EA6EAF3AD01BAB-t8YLG9SB9XQEb75RT/aEbJZPSYnAH24X@public.gmane.org>
2017-08-03 22:11                                                                           ` Shuah Khan
2017-08-03 18:51                                                                       ` Shuah Khan
     [not found]                                                                         ` <a313d401-d18b-ed9a-d82d-f6e12f606743-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>
2017-08-04  1:15                                                                           ` Theodore Ts'o
2017-07-07  3:33                                   ` Fengguang Wu
     [not found]                                     ` <20170707033302.rgpq5knzx3qvvr2p-q6ZYBFIlbFFi0tQiZxhdj1DQ4js95KgL@public.gmane.org>
2017-07-07  4:52                                       ` Frank Rowand
2017-07-05 15:32                               ` Greg KH
     [not found]                                 ` <20170705153259.GA7265-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2017-07-05 15:36                                   ` Carlos O'Donell
2017-07-05 15:52                                   ` Steven Rostedt
     [not found]                                     ` <20170705115219.02370220-f9ZlEuEWxVcJvu8Pb33WZ0EMvNT87kid@public.gmane.org>
2017-07-05 18:42                                       ` Greg KH
2017-07-05 18:29                                   ` Daniel Vetter
2017-07-06 22:24                                   ` Shuah Khan
     [not found]                                     ` <a2fada39-76d4-e136-f2db-d8306d929902-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>
2017-07-06 22:32                                       ` Steven Rostedt
     [not found]                                         ` <20170706183249.60b2aef9-f9ZlEuEWxVcJvu8Pb33WZ0EMvNT87kid@public.gmane.org>
2017-07-06 22:40                                           ` Shuah Khan
2017-07-05 16:54                           ` Dan Williams
     [not found]                             ` <CAPcyv4iOV2-hndx1rQmpPQF+myp=P8rmpf5JhXQXZxPhR6qoQw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-07-05 18:45                               ` Greg KH
     [not found]                                 ` <20170705184544.GB22044-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2017-07-05 19:47                                   ` Dan Williams
2017-07-05 14:06                       ` Carlos O'Donell
2017-07-05 15:47                   ` Mark Brown

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