From: Paolo Bonzini <pbonzini@redhat.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: KVM list <kvm@vger.kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Alex Williamson <alex.williamson@redhat.com>,
Peter Feiner <pfeiner@google.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: "statsfs" API design
Date: Tue, 26 Nov 2019 11:50:29 +0100 [thread overview]
Message-ID: <75dc4403-cc07-0f99-00ec-86f61092fff9@redhat.com> (raw)
In-Reply-To: <20191126100948.GB1416107@kroah.com>
On 26/11/19 11:09, Greg Kroah-Hartman wrote:
> So I think there are two different things here:
> - a simple data structure for in-kernel users of statistics
> - a way to export statistics to userspace
>
> Now if they both can be solved with the same "solution", wonderful! But
> don't think that you have to do both of these at the same time.
>
> Which one are you trying to solve here, I can't figure it out. Is it
> the second one?
I already have the second in KVM using debugfs, but that's not good. So
I want to do:
- a simple data structure for in-kernel *publishers* of statistics
- a sysfs-based interface to export it to userspace, which looks a lot
like KVM's debugfs-based statistics.
What we don't have to do at the same time, is a new interface to
userspace, one that is more efficient while keeping the self-describing
property that we agree is needed. That is also planned, but would come
later.
Paolo
next prev parent reply other threads:[~2019-11-26 10:50 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-06 15:56 Paolo Bonzini
2019-11-09 15:49 ` Greg Kroah-Hartman
2019-11-10 13:04 ` Paolo Bonzini
2019-11-26 10:09 ` Greg Kroah-Hartman
2019-11-26 10:50 ` Paolo Bonzini [this message]
2019-11-26 14:18 ` Greg Kroah-Hartman
2019-11-09 18:44 Alexey Dobriyan
2019-11-10 9:14 ` Greg KH
2019-11-10 10:09 ` Brian Masney
2019-11-10 10:14 ` Greg KH
2019-11-10 10:19 ` Greg KH
2019-11-10 15:34 ` Alexey Dobriyan
2019-11-10 20:58 ` Paolo Bonzini
2019-11-11 20:40 ` Alexey Dobriyan
2019-11-26 10:07 ` Greg KH
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