From: Jeremy Fitzhardinge <jeremy@goop.org>
To: benh@kernel.crashing.org
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
linux-kernel@vger.kernel.org,
Steven Rostedt <rostedt@goodmis.org>,
linuxppc-dev@ozlabs.org, Steven Rostedt <srostedt@redhat.com>,
Scott Wood <scottwood@freescale.com>,
Eran Liberty <liberty@extricom.com>
Subject: Re: ftrace introduces instability into kernel 2.6.27(-rc2,-rc3)
Date: Tue, 19 Aug 2008 16:58:46 -0700 [thread overview]
Message-ID: <48AB5E36.8030400@goop.org> (raw)
In-Reply-To: <1219182471.7826.16.camel@pasglop>
Benjamin Herrenschmidt wrote:
>> Ok, there are two cases where it's ok :
>>
>> 1 - in stop_machine, considering we are not touching code executed in
>> NMI handlers.
>> 2 - when using my replace_instruction_safe() which uses a temporary
>> breakpoint when doing the instruction replacement.
>>
>> In those cases you could use text_poke_early().
>>
>
> Note that vmap/vunmap will be very slow.
>
Don't we have Nick's speedups now?
J
WARNING: multiple messages have this Message-ID (diff)
From: Jeremy Fitzhardinge <jeremy@goop.org>
To: benh@kernel.crashing.org
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
Steven Rostedt <rostedt@goodmis.org>,
Scott Wood <scottwood@freescale.com>,
Eran Liberty <liberty@extricom.com>,
linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org,
Steven Rostedt <srostedt@redhat.com>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Nick Piggin <nickpiggin@yahoo.com.au>
Subject: Re: ftrace introduces instability into kernel 2.6.27(-rc2,-rc3)
Date: Tue, 19 Aug 2008 16:58:46 -0700 [thread overview]
Message-ID: <48AB5E36.8030400@goop.org> (raw)
In-Reply-To: <1219182471.7826.16.camel@pasglop>
Benjamin Herrenschmidt wrote:
>> Ok, there are two cases where it's ok :
>>
>> 1 - in stop_machine, considering we are not touching code executed in
>> NMI handlers.
>> 2 - when using my replace_instruction_safe() which uses a temporary
>> breakpoint when doing the instruction replacement.
>>
>> In those cases you could use text_poke_early().
>>
>
> Note that vmap/vunmap will be very slow.
>
Don't we have Nick's speedups now?
J
next prev parent reply other threads:[~2008-08-20 0:09 UTC|newest]
Thread overview: 141+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-18 14:18 2.6.24-rc4: pci_remove_bus_device() => pci_scan_child_bus() => pci_bus_add_devices bug? Eran Liberty
2008-07-20 10:31 ` [PATCH 2.6.24-rc4] PCI: refuse to re-add a device to a bus upon pci_scan_child_bus() Eran Liberty
2008-07-20 16:48 ` Eran Liberty
2008-07-21 19:18 ` [PATCH 2.6.26] " Eran Liberty
2008-07-21 19:49 ` Matthew Wilcox
2008-07-22 8:21 ` eran liberty
2008-07-22 11:49 ` Matthew Wilcox
2008-07-22 13:08 ` Eran Liberty
2008-07-22 13:14 ` Eran Liberty
2008-07-22 14:13 ` Matthew Wilcox
2008-07-22 15:25 ` Eran Liberty
2008-07-22 16:52 ` Matthew Wilcox
2008-07-22 17:41 ` Eran Liberty
2008-07-22 18:11 ` Matthew Wilcox
2008-07-23 18:31 ` Eran Liberty
2008-07-27 11:01 ` Eran Liberty
2008-07-27 15:08 ` Matthew Wilcox
2008-08-18 8:08 ` ftrace introduces instability into kernel 2.6.27(-rc2,-rc3) Eran Liberty
2008-08-18 15:07 ` Steven Rostedt
2008-08-18 15:07 ` Steven Rostedt
2008-08-18 15:47 ` Mathieu Desnoyers
2008-08-18 15:47 ` Mathieu Desnoyers
2008-08-18 16:12 ` Steven Rostedt
2008-08-18 16:12 ` Steven Rostedt
2008-08-18 17:04 ` Mathieu Desnoyers
2008-08-18 17:04 ` Mathieu Desnoyers
2008-08-18 17:21 ` Scott Wood
2008-08-18 17:21 ` Scott Wood
2008-08-18 18:27 ` Steven Rostedt
2008-08-18 18:27 ` Steven Rostedt
2008-08-18 18:29 ` Scott Wood
2008-08-18 18:29 ` Scott Wood
2008-08-19 1:53 ` Benjamin Herrenschmidt
2008-08-19 1:53 ` Benjamin Herrenschmidt
2008-08-19 2:28 ` Steven Rostedt
2008-08-19 2:28 ` Steven Rostedt
2008-08-19 2:39 ` Benjamin Herrenschmidt
2008-08-19 2:39 ` Benjamin Herrenschmidt
2008-08-19 2:41 ` Steven Rostedt
2008-08-19 2:41 ` Steven Rostedt
2008-08-19 2:47 ` Mathieu Desnoyers
2008-08-19 2:47 ` Mathieu Desnoyers
2008-08-19 3:32 ` Steven Rostedt
2008-08-19 3:32 ` Steven Rostedt
2008-08-19 3:36 ` Mathieu Desnoyers
2008-08-19 3:36 ` Mathieu Desnoyers
2008-08-19 4:00 ` Steven Rostedt
2008-08-19 4:00 ` Steven Rostedt
2008-08-19 16:47 ` Steven Rostedt
2008-08-19 16:47 ` Steven Rostedt
2008-08-19 17:34 ` Mathieu Desnoyers
2008-08-19 17:34 ` Mathieu Desnoyers
2008-08-19 21:08 ` Steven Rostedt
2008-08-19 21:08 ` Steven Rostedt
2008-08-20 9:40 ` Nick Piggin
2008-08-20 9:40 ` Nick Piggin
2008-08-19 21:47 ` Benjamin Herrenschmidt
2008-08-19 21:47 ` Benjamin Herrenschmidt
2008-08-19 23:58 ` Jeremy Fitzhardinge [this message]
2008-08-19 23:58 ` Jeremy Fitzhardinge
2008-08-20 1:17 ` Benjamin Herrenschmidt
2008-08-20 1:17 ` Benjamin Herrenschmidt
2008-08-19 2:56 ` Benjamin Herrenschmidt
2008-08-19 2:56 ` Benjamin Herrenschmidt
2008-08-19 3:12 ` Steven Rostedt
2008-08-19 3:12 ` Steven Rostedt
2008-08-19 4:17 ` Benjamin Herrenschmidt
2008-08-19 4:17 ` Benjamin Herrenschmidt
2008-08-20 7:18 ` Benjamin Herrenschmidt
2008-08-20 7:18 ` Benjamin Herrenschmidt
2008-08-20 13:14 ` Steven Rostedt
2008-08-20 13:14 ` Steven Rostedt
2008-08-20 13:19 ` Steven Rostedt
2008-08-20 13:19 ` Steven Rostedt
2008-08-20 13:36 ` Eran Liberty
2008-08-20 13:36 ` Eran Liberty
2008-08-20 13:43 ` Steven Rostedt
2008-08-20 13:43 ` Steven Rostedt
2008-08-20 14:02 ` Eran Liberty
2008-08-20 14:02 ` Eran Liberty
2008-08-20 14:55 ` Jon Smirl
2008-08-20 14:55 ` Jon Smirl
2008-08-20 15:23 ` Steven Rostedt
2008-08-20 15:23 ` Steven Rostedt
2008-08-20 18:23 ` Eran Liberty
2008-08-20 18:23 ` Eran Liberty
2008-08-20 18:33 ` Steven Rostedt
2008-08-20 18:33 ` Steven Rostedt
2008-08-20 15:27 ` Steven Rostedt
2008-08-20 15:27 ` Steven Rostedt
2008-08-20 21:37 ` Benjamin Herrenschmidt
2008-08-20 21:37 ` Benjamin Herrenschmidt
2008-08-20 14:16 ` Josh Boyer
2008-08-20 14:16 ` Josh Boyer
2008-08-20 14:22 ` Steven Rostedt
2008-08-20 14:22 ` Steven Rostedt
2008-08-20 14:50 ` Josh Boyer
2008-08-20 14:50 ` Josh Boyer
2008-09-15 16:30 ` [PATCH 2.6.26] SERIAL DRIVER: Handle Multiple consecutive sysrq from the serial Eran Liberty
2008-09-15 16:30 ` Eran Liberty
2008-09-17 23:46 ` Andrew Morton
2008-09-18 6:58 ` Eran Liberty
2008-09-18 6:58 ` Eran Liberty
2008-08-20 21:36 ` ftrace introduces instability into kernel 2.6.27(-rc2,-rc3) Benjamin Herrenschmidt
2008-08-20 21:36 ` Benjamin Herrenschmidt
2008-08-20 21:44 ` Steven Rostedt
2008-08-20 21:44 ` Steven Rostedt
2008-08-18 18:47 ` Steven Rostedt
2008-08-18 18:47 ` Steven Rostedt
2008-08-18 18:56 ` Scott Wood
2008-08-18 19:28 ` Steven Rostedt
2008-08-18 18:25 ` Eran Liberty
2008-08-18 18:25 ` Eran Liberty
2008-08-18 18:41 ` Mathieu Desnoyers
2008-08-18 18:41 ` Mathieu Desnoyers
2008-08-19 1:54 ` Benjamin Herrenschmidt
2008-08-19 1:54 ` Benjamin Herrenschmidt
2008-08-19 9:56 ` Eran Liberty
2008-08-19 9:56 ` Eran Liberty
2008-08-19 13:02 ` Mathieu Desnoyers
2008-08-19 13:02 ` Mathieu Desnoyers
2008-08-19 21:46 ` Benjamin Herrenschmidt
2008-08-19 21:46 ` Benjamin Herrenschmidt
2008-08-18 18:50 ` Steven Rostedt
2008-08-18 18:50 ` Steven Rostedt
2008-08-19 12:09 ` Eran Liberty
2008-08-19 12:09 ` Eran Liberty
2008-08-19 13:05 ` Mathieu Desnoyers
2008-08-19 13:05 ` Mathieu Desnoyers
2008-08-19 14:21 ` Eran Liberty
2008-08-19 14:21 ` Eran Liberty
2008-08-19 14:42 ` Mathieu Desnoyers
2008-08-19 14:42 ` Mathieu Desnoyers
2008-08-19 20:15 ` Steven Rostedt
2008-08-19 20:15 ` Steven Rostedt
2008-08-20 11:18 ` Eran Liberty
2008-08-20 11:18 ` Eran Liberty
2008-08-20 13:12 ` Steven Rostedt
2008-08-20 13:12 ` Steven Rostedt
2008-08-19 1:51 ` Benjamin Herrenschmidt
2008-08-19 1:51 ` Benjamin Herrenschmidt
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