From: Kees Cook <keescook@chromium.org>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Oscar Carter <oscar.carter@gmx.com>,
Mitchell Blank Jr <mitch@sfgoth.com>,
kernel-hardening@lists.openwall.com,
Peter Zijlstra <peterz@infradead.org>,
kgdb-bugreport@lists.sourceforge.net,
alsa-devel@alsa-project.org, Allen Pais <allen.lkml@gmail.com>,
netdev@vger.kernel.org,
Christian Gromm <christian.gromm@microchip.com>,
Will Deacon <will@kernel.org>,
devel@driverdev.osuosl.org, Jonathan Corbet <corbet@lwn.net>,
Daniel Thompson <daniel.thompson@linaro.org>,
"David S. Miller" <davem@davemloft.net>,
Masahiro Yamada <masahiroy@kernel.org>,
Takashi Iwai <tiwai@suse.com>,
Julian Wiedmann <jwi@linux.ibm.com>,
"Matthew Wilcox \(Oracle\)" <willy@infradead.org>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Nishka Dasgupta <nishkadg.linux@gmail.com>,
Jiri Slaby <jslaby@suse.com>, Jakub Kicinski <kuba@kernel.org>,
Guenter Roeck <linux@roeck-us.net>,
Wambui Karuga <wambui.karugax@gmail.com>,
Vasily Gorbik <gor@linux.ibm.com>,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
Heiko Carstens <hca@linux.ibm.com>,
linux-input@vger.kernel.org, Ursula Braun <ubraun@linux.ibm.com>,
Stephen Boyd <swboyd@chromium.org>,
Chris Packham <chris.packham@alliedtelesis.co.nz>,
Harald Freudenberger <freude@linux.ibm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Jaroslav Kysela <perex@perex.cz>, Felipe Balbi <balbi@kernel.org>,
Kyungtae Kim <kt0755@gmail.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Douglas Anderson <dianders@chromium.org>,
Kevin Curtis <kevin.curtis@farsite.co.uk>,
linux-usb@vger.kernel.org,
Jason Wessel <jason.wessel@windriver.com>,
Romain Perier <romain.perier@gmail.com>,
Karsten Graul <kgraul@linux.ibm.com>
Subject: Re: [PATCH 0/3] Modernize tasklet callback API
Date: Thu, 16 Jul 2020 12:24:12 -0700 [thread overview]
Message-ID: <202007161223.19FB352B5@keescook> (raw)
In-Reply-To: <20200716081538.2sivhkj4hcyrusem@linutronix.de>
On Thu, Jul 16, 2020 at 10:15:38AM +0200, Sebastian Andrzej Siewior wrote:
> On 2020-07-16 09:57:18 [+0200], Peter Zijlstra wrote:
> >
> > there appear to be hardly any users left.. Can't we stage an extinction
> > event here instead?
>
> Most of the time the tasklet is scheduled from an interrupt handler. So
> we could get rid of these tasklets by using threaded IRQs.
Perhaps I can add a comment above the tasklet API area in interrupt.h?
--
Kees Cook
_______________________________________________
devel mailing list
devel@linuxdriverproject.org
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
WARNING: multiple messages have this Message-ID (diff)
From: Kees Cook <keescook@chromium.org>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Oscar Carter <oscar.carter@gmx.com>,
Mitchell Blank Jr <mitch@sfgoth.com>,
kernel-hardening@lists.openwall.com,
Peter Zijlstra <peterz@infradead.org>,
kgdb-bugreport@lists.sourceforge.net,
alsa-devel@alsa-project.org, Allen Pais <allen.lkml@gmail.com>,
netdev@vger.kernel.org,
Christian Gromm <christian.gromm@microchip.com>,
Will Deacon <will@kernel.org>,
devel@driverdev.osuosl.org, Jonathan Corbet <corbet@lwn.net>,
Daniel Thompson <daniel.thompson@linaro.org>,
"David S. Miller" <davem@davemloft.net>,
Masahiro Yamada <masahiroy@kernel.org>,
Takashi Iwai <tiwai@suse.com>,
Julian Wiedmann <jwi@linux.ibm.com>,
"Matthew Wilcox \(Oracle\)" <willy@infradead.org>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Nishka Dasgupta <nishkadg.linux@gmail.com>,
Jiri Slaby <jslaby@suse.com>, Jakub Kicinski <kuba@kernel.org>,
Guenter Roeck <linux@roeck-us.net>,
Wambui Karuga <wambui.karugax@gmail.com>,
Vasily Gorbik <gor@linux.ibm.com>,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
Heiko Carstens <hca@linux.ibm.com>,
linux-input@vger.kernel.org, Ursula Braun <ubraun@linux.ibm.com>,
Stephen Boyd <swboyd@chromium.org>,
Chris Packham <chris.packham@alliedtelesis.co.nz>,
Harald Freudenberger <freude@linux.ibm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Felipe Balbi <balbi@kernel.org>, Kyungtae Kim <kt0755@gmail.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Douglas Anderson <dianders@chromium.org>,
Kevin Curtis <kevin.curtis@farsite.co.uk>,
linux-usb@vger.kernel.org,
Jason Wessel <jason.wessel@windriver.com>,
Romain Perier <romain.perier@gmail.com>,
Karsten Graul <kgraul@linux.ibm.com>
Subject: Re: [PATCH 0/3] Modernize tasklet callback API
Date: Thu, 16 Jul 2020 12:24:12 -0700 [thread overview]
Message-ID: <202007161223.19FB352B5@keescook> (raw)
In-Reply-To: <20200716081538.2sivhkj4hcyrusem@linutronix.de>
On Thu, Jul 16, 2020 at 10:15:38AM +0200, Sebastian Andrzej Siewior wrote:
> On 2020-07-16 09:57:18 [+0200], Peter Zijlstra wrote:
> >
> > there appear to be hardly any users left.. Can't we stage an extinction
> > event here instead?
>
> Most of the time the tasklet is scheduled from an interrupt handler. So
> we could get rid of these tasklets by using threaded IRQs.
Perhaps I can add a comment above the tasklet API area in interrupt.h?
--
Kees Cook
WARNING: multiple messages have this Message-ID (diff)
From: Kees Cook <keescook@chromium.org>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Allen Pais <allen.lkml@gmail.com>,
Oscar Carter <oscar.carter@gmx.com>,
Romain Perier <romain.perier@gmail.com>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Kevin Curtis <kevin.curtis@farsite.co.uk>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Harald Freudenberger <freude@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Jiri Slaby <jslaby@suse.com>, Felipe Balbi <balbi@kernel.org>,
Jason Wessel <jason.wessel@windriver.com>,
Daniel Thompson <daniel.thompson@linaro.org>,
Douglas Anderson <dianders@chromium.org>,
Mitchell Blank Jr <mitch@sfgoth.com>,
Julian Wiedmann <jwi@linux.ibm.com>,
Karsten Graul <kgraul@linux.ibm.com>,
Ursula Braun <ubraun@linux.ibm.com>,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
Christian Gromm <christian.gromm@microchip.com>,
Nishka Dasgupta <nishkadg.linux@gmail.com>,
Masahiro Yamada <masahiroy@kernel.org>,
Stephen Boyd <swboyd@chromium.org>,
"Matthew Wilcox (Oracle)" <willy@infradead.org>,
Wambui Karuga <wambui.karugax@gmail.com>,
Guenter Roeck <linux@roeck-us.net>,
Chris Packham <chris.packham@alliedtelesis.co.nz>,
Kyungtae Kim <kt0755@gmail.com>,
Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Jonathan Corbet <corbet@lwn.net>, Will Deacon <will@kernel.org>,
linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, linux-s390@vger.kernel.org,
devel@driverdev.osuosl.org, linux-usb@vger.kernel.org,
kgdb-bugreport@lists.sourceforge.net,
alsa-devel@alsa-project.org, kernel-hardening@lists.openwall.com
Subject: Re: [PATCH 0/3] Modernize tasklet callback API
Date: Thu, 16 Jul 2020 12:24:12 -0700 [thread overview]
Message-ID: <202007161223.19FB352B5@keescook> (raw)
In-Reply-To: <20200716081538.2sivhkj4hcyrusem@linutronix.de>
On Thu, Jul 16, 2020 at 10:15:38AM +0200, Sebastian Andrzej Siewior wrote:
> On 2020-07-16 09:57:18 [+0200], Peter Zijlstra wrote:
> >
> > there appear to be hardly any users left.. Can't we stage an extinction
> > event here instead?
>
> Most of the time the tasklet is scheduled from an interrupt handler. So
> we could get rid of these tasklets by using threaded IRQs.
Perhaps I can add a comment above the tasklet API area in interrupt.h?
--
Kees Cook
next prev parent reply other threads:[~2020-07-16 19:24 UTC|newest]
Thread overview: 85+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-16 3:08 [PATCH 0/3] Modernize tasklet callback API Kees Cook
2020-07-16 3:08 ` Kees Cook
2020-07-16 3:08 ` Kees Cook
2020-07-16 3:08 ` [PATCH 1/3] usb: gadget: udc: Avoid tasklet passing a global Kees Cook
2020-07-16 3:08 ` Kees Cook
2020-07-16 3:08 ` Kees Cook
2020-07-16 7:28 ` Greg Kroah-Hartman
2020-07-16 7:28 ` Greg Kroah-Hartman
2020-07-16 7:28 ` Greg Kroah-Hartman
2020-07-16 19:41 ` Kees Cook
2020-07-16 19:41 ` Kees Cook
2020-07-16 19:41 ` Kees Cook
2020-07-31 9:20 ` Felipe Balbi
2020-07-31 9:20 ` Felipe Balbi
2020-07-31 9:20 ` Felipe Balbi
2020-07-16 3:08 ` [PATCH 2/3] treewide: Replace DECLARE_TASKLET() with DECLARE_TASKLET_OLD() Kees Cook
2020-07-16 3:08 ` Kees Cook
2020-07-16 3:08 ` Kees Cook
2020-07-16 7:30 ` Greg Kroah-Hartman
2020-07-16 7:30 ` Greg Kroah-Hartman
2020-07-16 7:30 ` Greg Kroah-Hartman
2020-07-16 11:29 ` Matthew Wilcox
2020-07-16 11:29 ` Matthew Wilcox
2020-07-16 11:29 ` Matthew Wilcox
2020-07-16 19:15 ` Kees Cook
2020-07-16 19:15 ` Kees Cook
2020-07-16 19:15 ` Kees Cook
2020-07-16 3:08 ` [PATCH 3/3] tasklet: Introduce new initialization API Kees Cook
2020-07-16 3:08 ` Kees Cook
2020-07-16 3:08 ` Kees Cook
2020-07-16 7:30 ` Greg Kroah-Hartman
2020-07-16 7:30 ` Greg Kroah-Hartman
2020-07-16 7:30 ` Greg Kroah-Hartman
2020-07-16 15:37 ` Matthew Wilcox
2020-07-16 15:37 ` Matthew Wilcox
2020-07-16 15:37 ` Matthew Wilcox
2020-07-16 19:22 ` Kees Cook
2020-07-16 19:22 ` Kees Cook
2020-07-16 19:22 ` Kees Cook
2020-07-16 7:57 ` [PATCH 0/3] Modernize tasklet callback API Peter Zijlstra
2020-07-16 7:57 ` Peter Zijlstra
2020-07-16 7:57 ` Peter Zijlstra
2020-07-16 8:15 ` Sebastian Andrzej Siewior
2020-07-16 8:15 ` Sebastian Andrzej Siewior
2020-07-16 8:15 ` Sebastian Andrzej Siewior
2020-07-16 19:24 ` Kees Cook [this message]
2020-07-16 19:24 ` Kees Cook
2020-07-16 19:24 ` Kees Cook
2020-07-16 19:14 ` Kees Cook
2020-07-16 19:14 ` Kees Cook
2020-07-16 19:14 ` Kees Cook
2020-07-16 20:48 ` Dmitry Torokhov
2020-07-16 20:48 ` Dmitry Torokhov
2020-07-16 20:48 ` Dmitry Torokhov
2020-07-16 21:24 ` Kees Cook
2020-07-16 21:24 ` Kees Cook
2020-07-16 21:24 ` Kees Cook
2020-07-30 7:03 ` Thomas Gleixner
2020-07-30 7:03 ` Thomas Gleixner
2020-07-30 7:03 ` Thomas Gleixner
2020-07-30 18:14 ` Kees Cook
2020-07-30 18:14 ` Kees Cook
2020-07-30 18:14 ` Kees Cook
2020-08-03 8:46 ` Allen
2020-08-03 8:46 ` Allen
2020-08-03 8:46 ` Allen
2020-08-03 8:46 ` Allen
2020-08-11 12:16 ` Allen
2020-08-11 12:16 ` Allen
2020-08-11 12:16 ` Allen
2020-08-11 12:16 ` Allen
2020-08-11 21:33 ` Kees Cook
2020-08-11 21:33 ` Kees Cook
2020-08-11 21:33 ` Kees Cook
2020-08-12 6:21 ` Takashi Iwai
2020-08-12 6:21 ` Takashi Iwai
2020-08-12 6:21 ` Takashi Iwai
2020-08-12 11:32 ` Allen
2020-08-12 11:32 ` Allen
2020-08-12 11:32 ` Allen
2020-08-12 11:32 ` Allen
2020-08-12 12:31 ` Allen
2020-08-12 12:31 ` Allen
2020-08-12 12:31 ` Allen
2020-08-12 12:31 ` Allen
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