syscall: don't use pr_info to print a part of string

Before:
(00.009468)     87: sysctl: <kernel/sem> = <(00.009475)     87: 2108913153 (00.009481)     87: 1252387386 (00.009486)     87: 835139248 (00.009491)     87: 320896030 (00.009496)     87: >
After:
(00.009468)     87: sysctl: <kernel/sem> = <2108913153 1252387386 835139248 320896030 >

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
zdtm/ipc_namespaces: don't extra symbols in a sysctl file

The kernel has a bug in handling auto_msgmni and if we send extra
symbols, a new value isn't applied.

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
ipc: set the msgmni sysctl after auto_msgmni

Because setting of auto_msgmni recalculates a value of msgmni

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
sysctl: don't write '\0' at the end of buffer in a sysctl file

It isn't required. The kernel has a bug in handling auto_msgmni and
if we send extra symbols, a new value isn't applied.

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
zdtm/ipc_namespace: set the auto_msgmni sysctl to zero

We are going to execute tests concurrently, but if auto_msgmni is
enabled, the msgmni is recalcalated each time, when ipcns is created
or removed.

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>