From: Stanislav Kinsbursky <skinsbursky@parallels.com>
To: akpm@linux-foundation.org
Cc: serge.hallyn@canonical.com, ebiederm@xmission.com,
linux-kernel@vger.kernel.org, xemul@parallels.com,
catalin.marinas@arm.com, will.deacon@arm.com, jmorris@namei.org,
cmetcalf@tilera.com, joe.korty@ccur.com, dhowells@redhat.com,
dledford@redhat.com, viro@zeniv.linux.org.uk,
kosaki.motohiro@jp.fujitsu.com, linux-api@vger.kernel.org,
serue@us.ibm.com, tglx@linutronix.de, paulmck@linux.vnet.ibm.com,
devel@openvz.org, mtk.manpages@gmail.com
Subject: [RFC PATCH v8 0/5] IPC: checkpoint/restore in userspace enhancements
Date: Wed, 24 Oct 2012 19:34:51 +0400 [thread overview]
Message-ID: <20121024151555.5642.79086.stgit@localhost.localdomain> (raw)
v8:
This respin of the patch set was significantly reworked. Most part of new API
was replaced by sysctls (by one per messages, semaphores and shared memory),
allowing to preset desired id for next new IPC object.
This patch set is aimed to provide additional functionality for all IPC
objects, which is required for migration of these objects by user-space
checkpoint/restore utils (CRIU).
The main problem here was impossibility to set up object id. This patch set
solves the problem by adding new sysctls for preset of desired id for new IPC
object.
Another problem was to peek messages from queues without deleting them.
This was achived by introducing of new MSG_COPY flag for sys_msgrcv(). If
MSG_COPY flag is set, then msgtyp is interpreted as message number.
The following series implements...
---
Stanislav Kinsbursky (5):
ipc: remove forced assignment of selected message
ipc: add sysctl to specify desired next object id
ipc: message queue receive cleanup
ipc: message queue copy feature introduced
test: IPC message queue copy feture test
include/linux/ipc_namespace.h | 1
include/linux/msg.h | 5 -
include/uapi/linux/msg.h | 1
ipc/compat.c | 45 +++----
ipc/ipc_sysctl.c | 28 ++++
ipc/msg.c | 99 +++++++++++----
ipc/msgutil.c | 38 ++++++
ipc/util.c | 16 ++
ipc/util.h | 2
tools/testing/selftests/ipc/Makefile | 25 ++++
tools/testing/selftests/ipc/msgque.c | 231 ++++++++++++++++++++++++++++++++++
11 files changed, 432 insertions(+), 59 deletions(-)
create mode 100644 tools/testing/selftests/ipc/Makefile
create mode 100644 tools/testing/selftests/ipc/msgque.c
next reply other threads:[~2012-10-24 15:35 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-24 15:34 Stanislav Kinsbursky [this message]
2012-10-24 15:35 ` [PATCH v8 1/5] ipc: remove forced assignment of selected message Stanislav Kinsbursky
2012-10-24 15:35 ` [PATCH v8 2/5] ipc: add sysctl to specify desired next object id Stanislav Kinsbursky
2012-10-24 21:41 ` Andrew Morton
2012-10-25 7:53 ` Stanislav Kinsbursky
2012-10-24 15:35 ` [PATCH v8 3/5] ipc: message queue receive cleanup Stanislav Kinsbursky
2012-10-24 15:35 ` [PATCH v8 4/5] ipc: message queue copy feature introduced Stanislav Kinsbursky
2012-10-24 21:41 ` Andrew Morton
2012-10-24 15:35 ` [PATCH v8 5/5] test: IPC message queue copy feture test Stanislav Kinsbursky
2012-10-24 21:42 ` [RFC PATCH v8 0/5] IPC: checkpoint/restore in userspace enhancements Andrew Morton
2012-12-18 20:36 ` Andrew Morton
2012-12-20 4:06 ` Stanislav Kinsbursky
2012-12-20 20:47 ` Andrew Morton
2012-12-21 20:46 ` Stanislav Kinsbursky
2012-12-21 21:57 ` Sasha Levin
2012-12-22 15:43 ` Sasha Levin
2013-01-09 8:24 ` Stanislav Kinsbursky
2013-01-14 6:31 ` Sasha Levin
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