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From: Jakub Kicinski <kuba@kernel.org>
To: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Cc: kvm@vger.kernel.org,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Jim Mattson <jmattson@google.com>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>,
	David Rientjes <rientjes@google.com>,
	Jonathan Adams <jwadams@google.com>,
	linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org,
	kvm-ppc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	linux-s390@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	netdev@vger.kernel.org, Andrew Lunn <andrew@lunn.ch>
Subject: Re: [PATCH v3 0/7] Statsfs: a new ram-based file system for Linux kernel statistics
Date: Wed, 27 May 2020 13:23:21 -0700	[thread overview]
Message-ID: <20200527132321.54bcdf04@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> (raw)
In-Reply-To: <6a754b40-b148-867d-071d-8f31c5c0d172@redhat.com>

On Wed, 27 May 2020 15:14:41 +0200 Emanuele Giuseppe Esposito wrote:
> Regarding the config, as I said the idea is to gather multiple 
> subsystems' statistics, therefore there wouldn't be a single 
> configuration method like in netlink.
> For example in kvm there are file descriptors for configuration, and 
> creating them requires no privilege, contrary to the network interfaces.

Enumerating networking interfaces, addresses, and almost all of the
configuration requires no extra privilege. In fact I'd hope that
whatever daemon collects network stats doesn't run as root :)

I think enumerating objects is of primary importance, and statistics 
of those objects are subordinate.

Again, I have little KVM knowledge, but BPF also uses a fd-based API,
and carries stats over the same syscall interface.

  parent reply	other threads:[~2020-05-27 20:23 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-26 11:03 Emanuele Giuseppe Esposito
2020-05-26 11:03 ` [PATCH v3 1/7] stats_fs API: create, add and remove stats_fs sources and values Emanuele Giuseppe Esposito
2020-05-26 11:03 ` [PATCH v3 2/7] documentation for stats_fs Emanuele Giuseppe Esposito
2020-06-04  0:23   ` Randy Dunlap
2020-06-04 15:34     ` Emanuele Giuseppe Esposito
2020-05-26 11:03 ` [PATCH v3 3/7] kunit: tests for stats_fs API Emanuele Giuseppe Esposito
2020-05-27 10:05   ` Alan Maguire
2020-05-27 13:26     ` Emanuele Giuseppe Esposito
2020-05-26 11:03 ` [PATCH v3 4/7] stats_fs fs: virtual fs to show stats to the end-user Emanuele Giuseppe Esposito
2020-05-26 11:03 ` [PATCH v3 5/7] kvm_main: replace debugfs with stats_fs Emanuele Giuseppe Esposito
2020-05-26 11:03 ` [PATCH v3 6/7] [not for merge] kvm: example of stats_fs_value show function Emanuele Giuseppe Esposito
2020-05-26 11:03 ` [PATCH v3 7/7] [not for merge] netstats: example use of stats_fs API Emanuele Giuseppe Esposito
2020-05-26 14:16   ` Andrew Lunn
2020-05-26 15:45     ` Emanuele Giuseppe Esposito
2020-05-26 22:31 ` [PATCH v3 0/7] Statsfs: a new ram-based file system for Linux kernel statistics Jakub Kicinski
2020-05-27 13:14   ` Emanuele Giuseppe Esposito
2020-05-27 13:33     ` Andrew Lunn
2020-05-27 15:00       ` Paolo Bonzini
2020-05-27 20:23     ` Jakub Kicinski [this message]
2020-05-27 21:07       ` Paolo Bonzini
2020-05-27 21:27         ` Jakub Kicinski
2020-05-27 21:44           ` Paolo Bonzini
2020-05-27 22:21         ` David Ahern
2020-05-28  5:22           ` Paolo Bonzini
2020-05-27 21:17 ` Andrew Lunn

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