On 09/22/2009 06:19 PM, H. Peter Anvin wrote:
Ingo Molnar wrote:
* Avi Kivity a...@redhat.com wrote:
On 09/19/2009 09:40 AM, Avi Kivity wrote:
Add a general per-cpu notifier that is called whenever the kernel is
about to return to userspace. The notifier uses a thread_info flag
and existing
On 10/01/2009 08:21 AM, Avi Kivity wrote:
Re-ping?
If accepted, please merge just the core patch and I will carry all of
them in parallel. Once tip is merged I'll drop my copy of the first patch.
I was just talking to Ingo about this... would you consider this .32 or
.33 material at his
On 10/01/2009 05:25 PM, H. Peter Anvin wrote:
On 10/01/2009 08:21 AM, Avi Kivity wrote:
Re-ping?
If accepted, please merge just the core patch and I will carry all of
them in parallel. Once tip is merged I'll drop my copy of the first patch.
I was just talking to Ingo about
On 09/19/2009 09:40 AM, Avi Kivity wrote:
Add a general per-cpu notifier that is called whenever the kernel is
about to return to userspace. The notifier uses a thread_info flag
and existing checks, so there is no impact on user return or context
switch fast paths.
Ingo/Peter?
--
error
On Tue, 22 Sep 2009 12:25:33 +0300
Avi Kivity a...@redhat.com wrote:
On 09/19/2009 09:40 AM, Avi Kivity wrote:
Add a general per-cpu notifier that is called whenever the kernel is
about to return to userspace. The notifier uses a thread_info flag
and existing checks, so there is no impact
On 09/22/2009 12:37 PM, Arjan van de Ven wrote:
On Tue, 22 Sep 2009 12:25:33 +0300
Avi Kivitya...@redhat.com wrote:
On 09/19/2009 09:40 AM, Avi Kivity wrote:
Add a general per-cpu notifier that is called whenever the kernel is
about to return to userspace. The notifier uses a
* Avi Kivity a...@redhat.com wrote:
On 09/19/2009 09:40 AM, Avi Kivity wrote:
Add a general per-cpu notifier that is called whenever the kernel is
about to return to userspace. The notifier uses a thread_info flag
and existing checks, so there is no impact on user return or context
switch
On 09/22/2009 05:32 PM, Ingo Molnar wrote:
* Avi Kivitya...@redhat.com wrote:
On 09/19/2009 09:40 AM, Avi Kivity wrote:
Add a general per-cpu notifier that is called whenever the kernel is
about to return to userspace. The notifier uses a thread_info flag
and existing checks, so
Ingo Molnar wrote:
* Avi Kivity a...@redhat.com wrote:
On 09/19/2009 09:40 AM, Avi Kivity wrote:
Add a general per-cpu notifier that is called whenever the kernel is
about to return to userspace. The notifier uses a thread_info flag
and existing checks, so there is no impact on user return
On 09/22/2009 05:45 PM, Avi Kivity wrote:
Would be nice to convert some existing open-coded return-to-user-space
logic to this facility. One such candidate would be lockdep_sys_exit?
I only implemented this for x86, while lockdep is arch independent.
If arch support is added, it should be
On Tue, 2009-09-22 at 16:32 +0200, Ingo Molnar wrote:
* Avi Kivity a...@redhat.com wrote:
On 09/19/2009 09:40 AM, Avi Kivity wrote:
Add a general per-cpu notifier that is called whenever the kernel is
about to return to userspace. The notifier uses a thread_info flag
and existing
On 09/22/2009 07:50 PM, Peter Zijlstra wrote:
Would be nice to convert some existing open-coded return-to-user-space
logic to this facility. One such candidate would be lockdep_sys_exit?
And here I was thinking this was one of the hottest code paths in the
whole kernel...
If you're
On Tue, 2009-09-22 at 19:52 +0300, Avi Kivity wrote:
On 09/22/2009 07:50 PM, Peter Zijlstra wrote:
Would be nice to convert some existing open-coded return-to-user-space
logic to this facility. One such candidate would be lockdep_sys_exit?
And here I was thinking this was one of the
On 09/22/2009 07:55 PM, Peter Zijlstra wrote:
If you're using lockdep, surely that's not your biggest worry?
No, but that's all under #ifdef and fully disappears when not enabled.
Generic return-tu-user notifiers don't sound like they will though.
They will if not selected. If
On 09/22/2009 06:50 PM, Avi Kivity wrote:
On 09/22/2009 05:45 PM, Avi Kivity wrote:
Would be nice to convert some existing open-coded return-to-user-space
logic to this facility. One such candidate would be lockdep_sys_exit?
I only implemented this for x86, while lockdep is arch independent.
On Tue, 2009-09-22 at 16:32 +0200, Ingo Molnar wrote:
Would be nice to convert some existing open-coded return-to-user-space
logic to this facility. One such candidate would be lockdep_sys_exit?
I don't really like lockdep_sys_exit() in such a call,
lockdep_sys_exit() is currently placed such
Add a general per-cpu notifier that is called whenever the kernel is
about to return to userspace. The notifier uses a thread_info flag
and existing checks, so there is no impact on user return or context
switch fast paths.
Signed-off-by: Avi Kivity a...@redhat.com
---
v2: include new files in
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