H. Peter Anvin wrote:
[EMAIL PROTECTED] wrote:
This is a resend of the patch set Cedric had sent earlier. I ported
the patch set to 2.6.25-rc8-mm1 and tested on x86 and x86_64.
---
We have run out of the 32 bits in clone_flags !
This patchset introduces 2 new system calls which support
Robert Nelson wrote:
Where can I get the source rpm for MAKEDEV-3.3.13-1.3.swsoft.i386.rpm?
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Never mind, I found the modified MAKEDEV.spec in
On Wed, 2008-04-09 at 20:59 -0500, Serge E. Hallyn wrote:
Feh, so of course sysfs would have the most interactions for a device
namespace, but now we have pty, network, and user namespace all needing
some sort of sysfs solution. For a quickfix for
CONFIG_USER_SCHED+CONFIG_USER_NS, I just
the following is a new version of the patch.
changes from the previous:
- fix a BUG_ON in swap_cgroup_attach and add a comment about it.
YAMAMOTO Takashi
Signed-off-by: YAMAMOTO Takashi [EMAIL PROTECTED]
---
--- linux-2.6.25-rc3-mm1/init/Kconfig.BACKUP2008-03-05 15:45:50.0
After I fixed access to task-tgid in kernel/acct.c, Oleg
pointed out some bad side effects with this accounting vs
pid namespaces interaction.
So here is the approach to make this accounting work with
pid namespaces properly.
The idea is simple - when task dies it accounts itself in
each
It makes many fields initialization implicit, fixes void * = 0
(the ns-pidmap[i].page = 0) noise and will help in auto-setting
to NULL bsd-acct related field.
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
kernel/pid_namespace.c |8 ++--
1 files changed, 2 insertions(+), 6
It will be NULL automatically for all new namespaces.
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
include/linux/pid_namespace.h |5 +
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h
index
It does not accept any arguments :)
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
kernel/acct.c |1 -
1 files changed, 0 insertions(+), 1 deletions(-)
diff --git a/kernel/acct.c b/kernel/acct.c
index ee3e605..d9ee183 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -579,7 +579,6 @@
This adds the appropriate pointer to all the internal (i.e. static)
functions that work with global acct instance. API calls pass this
global one to them by now.
Essentially this is a plain s/acct_globals./acct-/ over the file.
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
kernel/acct.c
Don't use per-bsd-acct-struct lock, but work with a global
one. This lock is taken for short periods, so it's not going
to be a bottleneck, but it will allow us to easily avoid
many locking difficulties in the future.
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
kernel/acct.c | 42
We're going to have many bsd_acct_struct instances, not just
one, so the timer (currently working with a global one) has
to know which one to work with.
Use a handy setup_timer macro for it (thanks to Oleg for one).
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
kernel/acct.c |9
[EMAIL PROTECTED] writes:
From: Sukadev Bhattiprolu [EMAIL PROTECTED]
Subject: [lxc-dev] [patch -lxc 1/3] change clone_flags type to u64
This is a preliminary patch changing the clone_flags type to 64bits
for all the routines called by do_fork().
I must admit I was always a little
It will be visible in pid_namespace.h file, so fixup its name first.
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
kernel/acct.c |4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/acct.c b/kernel/acct.c
index 91e1cfd..ee3e605 100644
--- a/kernel/acct.c
+++
Allocate the structure on the first call to sys_acct(). After
this each namespace, that ordered the accounting, will live
with this structure till its own death.
Two notes
- routines, that close the accounting on fs umount time use
the init_pid_ns's acct by now;
- accounting routine accounts
This just makes the acct_proces walk the pid namespaces
from current up to the top and account a task in each
with the accounting turned on.
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
kernel/acct.c | 21 ++---
1 files changed, 14 insertions(+), 7 deletions(-)
diff
All the bsd_acct_strcts with opened accounting are linked into
a global list. So, the acct_auto_close(_mnt) walks one and drops
the accounting for each.
BTW, it worth dropping the acct-file != NULL check from these
routines, but I noticed this only when started sending the set :(
... Will do it
From: Pavel Emelyanov [EMAIL PROTECTED]
Date: Wed, 02 Apr 2008 17:50:21 +0400
This is the first step in making tuntap devices work in net
namespaces. The structure mentioned is pointed by struct net
and tun driver will fill this one on load. It will contain only
the tun devices list.
So
Hello Andi,
Andi Kleen wrote:
[EMAIL PROTECTED] writes:
From: Sukadev Bhattiprolu [EMAIL PROTECTED]
Subject: [lxc-dev] [patch -lxc 1/3] change clone_flags type to u64
This is a preliminary patch changing the clone_flags type to 64bits
for all the routines called by do_fork().
I must
H. Peter Anvin wrote:
[EMAIL PROTECTED] wrote:
If you're going to make it a 64-bit pass it in as a 64-bit number,
instead of breaking it into two numbers.
Maybe I am missing your point. The glibc interface could take a 64bit
parameter, but don't we need to pass 32-bit values into the system
The was no real rationale except for some people seeing clone functionality
as the match and the fact that FS_NAMESCAPE was done so made them believe it is
a good way to go.
And I warned about flags limitation at the beginning.
Both OpenVZ/vserver suggested to use a special syscall for handling
Andi Kleen wrote:
I guess that was a development rationale.
But what rationale? It just doesn't make much sense to me.
Let's add Eric in Cc:
Most of the namespaces are in
use in the container projects like openvz, vserver and probably others
and we needed a way to activate the code.
Hi, guys.
I've recently sent a TUN devices virtualization, but it was rejected
by Dave, since the struct net is becoming a dumping ground.
I agree with him - we really need some way to register on-net data
dynamically. That's my view of such a thing and two examples of how
to use it (TUN and
To make some per-net generic pointers, we need some way to
address them, i.e. - IDs. This is simple IDA-based IDs
generator for pernet subsystems. They will be used in the
next patches.
Since it will be used by devices only (tun and vlan), I make
it resemble the register_pernet_device
Add the elastic array of void * pointer to the struct net.
The access rules are simple:
1. register the ops with register_pernet_gen_device to get
the id of your private pointer
2. call net_assign_generic() to put the private data on the
struct net (most preferably this should be done
This is the first step in making tuntap devices work in net
namespaces. The structure mentioned is pointed by generic
net pointer with tun_net_id id, and tun driver fills one on
its load. It will contain only the tun devices list.
So declare this structure and introduce net init and exit hooks.
Remove the static tun_dev_list and replace its occurrences in
driver with per-net one.
It is used in two places - in tun_set_iff and tun_cleanup. In
the first case it's legal to use current net_ns. In the cleanup
call - move the loop, that unregisters all devices in net exit
hook.
This shows
This is basically means that a net is set for a new device, but
actually this involves two more steps:
1. mark the tun device as local, i.e. do not allow for it to
move across namespaces.
This is done so, since tun device is most often associated to some
file (and thus to some process) and
... which will kill all the devices in the given net with
the given rtnl_link_ops. Will be used in VLAN patches later.
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
include/net/rtnetlink.h |1 +
net/core/rtnetlink.c| 29 +
2 files changed, 22
We'll have to lookup the vlan_group by two keys - ifindex and
net. Turning the vlan_group lookup key to struct net_device
pointer will make this process easier.
Besides, this will eliminate one more place in the networking,
that assumes that indexes are unique in the kernel.
Signed-off-by: Pavel
It is empty now, but it will be populated later.
And it uses net generic pointers like TUN does.
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
net/8021q/vlan.c | 46 ++
net/8021q/vlan.h |5 +
2 files changed, 51 insertions(+), 0
Proc files will be created in each net, so prepare them for this
change just to make patches smaller.
The net != init_net checks in them are for git-bisect sanity, but
I'll drop them soon.
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
net/8021q/vlan.c | 15 +++
This is essentially a PATCH #9 part 2 - use the net
pointer passed in.
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
net/8021q/vlan.h |6 ++
net/8021q/vlanproc.c | 44 +---
2 files changed, 23 insertions(+), 27 deletions(-)
diff
And this one if PATCH #9 part 3 :)
After this proc may show relevant to each net namespace info.
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
net/8021q/vlanproc.c | 13 -
1 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/net/8021q/vlanproc.c
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
net/8021q/vlan.c | 14 +-
net/8021q/vlan.h |4 ++--
net/8021q/vlanproc.c |7 +--
3 files changed, 16 insertions(+), 9 deletions(-)
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 541542e..5cacad0
This one is similar to what I've done for TUN - set the proper
net after device allocation and clean VLANs on net exit.
Plus, drop explicit init_net usage.
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
net/8021q/vlan.c |7 +++
net/8021q/vlan_dev.c |3 ---
The preparations to this are done with my patch, that fixed
proc on vlan device rename.
This makes /proc/net/vlan/device file migrate from one
proc tree to another...
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
net/8021q/vlan.c | 13 -
1 files changed, 8 insertions(+),
Cedric Le Goater wrote:
OK. I didn't know that. I took sys_llseek() as an example of an interface
to follow when coded clone64().
llseek() was the first system call that took a doublewidth argument.
It's not the one you want to mimic.
-hpa
On Monday 07 April 2008 06:54:53 pm Peter Zijlstra wrote:
On Sun, 2008-04-06 at 02:01 +0530, Balaji Rao wrote:
+static s64 cpu_cgroup_read_stat(struct cpu_cgroup_stat *stat,
+ enum cpu_cgroup_stat_index idx)
+{
+ int cpu;
+ s64 ret = 0;
+
On Thu, 2008-04-10 at 21:39 +0530, Balaji Rao wrote:
On Monday 07 April 2008 06:54:53 pm Peter Zijlstra wrote:
On Sun, 2008-04-06 at 02:01 +0530, Balaji Rao wrote:
+static s64 cpu_cgroup_read_stat(struct cpu_cgroup_stat *stat,
+ enum cpu_cgroup_stat_index idx)
+{
Quoting Eric W. Biederman ([EMAIL PROTECTED]):
On Wed, 2008-04-09 at 20:59 -0500, Serge E. Hallyn wrote:
Feh, so of course sysfs would have the most interactions for a device
namespace, but now we have pty, network, and user namespace all needing
some sort of sysfs solution. For a
Quoting Andi Kleen ([EMAIL PROTECTED]):
I guess that was a development rationale.
But what rationale? It just doesn't make much sense to me.
Most of the namespaces are in
use in the container projects like openvz, vserver and probably others
and we needed a way to activate the
On Thu, Apr 10, 2008 at 8:01 AM, Pavel Emelyanov [EMAIL PROTECTED] wrote:
+int register_pernet_gen_device(int *id, struct pernet_operations *ops)
+{
+ int error;
+ mutex_lock(net_mutex);
+again:
+ error = ida_get_new_above(net_generic_ids, 1, id);
+ if (error)
Paul Menage [EMAIL PROTECTED] wrote:
| On Wed, Apr 9, 2008 at 7:38 PM, [EMAIL PROTECTED] wrote:
|
| But as Jon Corbet pointed out in the the thread above, it looked like
| adding a new system call has been the traditional way of solving this
| in Linux so far and there has been no
On Tue, Apr 8, 2008 at 7:28 PM, Li Zefan [EMAIL PROTECTED] wrote:
Sounds good, and I wrote a prototype in a quick:
Yes, that's pretty much what I was envisaging, thanks.
Paul
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index a6a6035..091bc21 100644
---
Pavel Emelyanov wrote:
To make some per-net generic pointers, we need some way to
address them, i.e. - IDs. This is simple IDA-based IDs
generator for pernet subsystems. They will be used in the
next patches.
Since it will be used by devices only (tun and vlan), I make
it resemble the
Serge E. Hallyn [EMAIL PROTECTED] wrote:
|
| Further what I did for the network namespace should easily handle the
| uid/gid namespace and should be a good starting place for a general
| device namespace.
|
| Agreed. What's the git url and which branch do i use for your proof
| of concept
Pavel Emelyanov wrote:
... which will kill all the devices in the given net with
the given rtnl_link_ops. Will be used in VLAN patches later.
Signed-off-by: Pavel Emelyanov [EMAIL PROTECTED]
---
include/net/rtnetlink.h |1 +
net/core/rtnetlink.c| 29 +
Serge E. Hallyn wrote:
Quoting Andi Kleen ([EMAIL PROTECTED]):
I guess that was a development rationale.
But what rationale? It just doesn't make much sense to me.
Most of the namespaces are in
use in the container projects like openvz, vserver and probably others
and we needed a way
Quoting Daniel Hokka Zakrisson ([EMAIL PROTECTED]):
Serge E. Hallyn wrote:
Quoting Andi Kleen ([EMAIL PROTECTED]):
I guess that was a development rationale.
But what rationale? It just doesn't make much sense to me.
Most of the namespaces are in
use in the container projects like
On Thu, Apr 10, 2008 at 07:06:24PM +0400, Pavel Emelyanov wrote:
This is the first step in making tuntap devices work in net
namespaces. The structure mentioned is pointed by generic
net pointer with tun_net_id id, and tun driver fills one on
its load. It will contain only the tun devices
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