From: Balbir Singh <balbir@linux.vnet.ibm.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Paul Menage <menage@google.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux Containers <containers@lists.osdl.org>,
YAMAMOTO Takashi <yamamoto@valinux.co.jp>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Eric W Biederman <ebiederm@xmission.com>,
Linux MM Mailing List <linux-mm@kvack.org>,
Nick Piggin <npiggin@suse.de>,
Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>,
Pavel Emelianov <xemul@openvz.org>,
Dhaval Giani <dhaval@linux.vnet.ibm.com>,
Balbir Singh <balbir@linux.vnet.ibm.com>,
Dave Hansen <haveblue@us.ibm.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: [-mm PATCH 5/9] Memory controller task migration (v6)
Date: Fri, 17 Aug 2007 14:13:20 +0530 [thread overview]
Message-ID: <20070817084320.26003.32578.sendpatchset@balbir-laptop> (raw)
In-Reply-To: <20070817084228.26003.12568.sendpatchset@balbir-laptop>
Allow tasks to migrate from one container to the other. We migrate
mm_struct's mem_container only when the thread group id migrates.
Signed-off-by: <balbir@linux.vnet.ibm.com>
---
mm/memcontrol.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff -puN mm/memcontrol.c~mem-control-task-migration mm/memcontrol.c
--- linux-2.6.23-rc2-mm2/mm/memcontrol.c~mem-control-task-migration 2007-08-17 13:14:19.000000000 +0530
+++ linux-2.6.23-rc2-mm2-balbir/mm/memcontrol.c 2007-08-17 13:14:19.000000000 +0530
@@ -326,11 +326,46 @@ static int mem_container_populate(struct
ARRAY_SIZE(mem_container_files));
}
+static void mem_container_move_task(struct container_subsys *ss,
+ struct container *cont,
+ struct container *old_cont,
+ struct task_struct *p)
+{
+ struct mm_struct *mm;
+ struct mem_container *mem, *old_mem;
+
+ mm = get_task_mm(p);
+ if (mm == NULL)
+ return;
+
+ mem = mem_container_from_cont(cont);
+ old_mem = mem_container_from_cont(old_cont);
+
+ if (mem == old_mem)
+ goto out;
+
+ /*
+ * Only thread group leaders are allowed to migrate, the mm_struct is
+ * in effect owned by the leader
+ */
+ if (p->tgid != p->pid)
+ goto out;
+
+ css_get(&mem->css);
+ rcu_assign_pointer(mm->mem_container, mem);
+ css_put(&old_mem->css);
+
+out:
+ mmput(mm);
+ return;
+}
+
struct container_subsys mem_container_subsys = {
.name = "memory",
.subsys_id = mem_container_subsys_id,
.create = mem_container_create,
.destroy = mem_container_destroy,
.populate = mem_container_populate,
+ .attach = mem_container_move_task,
.early_init = 1,
};
_
--
Warm Regards,
Balbir Singh
Linux Technology Center
IBM, ISTL
next prev parent reply other threads:[~2007-08-17 8:43 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-17 8:42 [-mm PATCH 0/9] Memory controller introduction (v6) Balbir Singh
2007-08-17 8:42 ` [-mm PATCH 1/9] Memory controller resource counters (v6) Balbir Singh
2007-08-20 8:20 ` [Devel] " Alexey Dobriyan
2007-08-20 9:01 ` Balbir Singh
2007-09-11 0:42 ` Paul Menage
2007-09-12 10:05 ` Balbir Singh
2007-08-17 8:42 ` [-mm PATCH 2/9] Memory controller containers setup (v6) Balbir Singh
2007-08-17 8:42 ` [-mm PATCH 3/9] Memory controller accounting " Balbir Singh
2007-08-17 8:43 ` [-mm PATCH 4/9] Memory controller memory accounting (v6) Balbir Singh
2007-08-17 8:43 ` Balbir Singh [this message]
2007-08-17 8:43 ` [-mm PATCH 6/9] Memory controller add per container LRU and reclaim (v6) Balbir Singh
2007-08-17 8:43 ` [-mm PATCH 7/9] Memory controller OOM handling (v6) Balbir Singh
2007-08-17 8:43 ` [-mm PATCH 8/9] Memory controller add switch to control what type of pages to limit (v6) Balbir Singh
2007-08-17 8:44 ` [-mm PATCH 9/9] Memory controller make page_referenced() container aware (v6) Balbir Singh
2007-08-17 15:49 ` [-mm PATCH 0/9] Memory controller introduction (v6) Dhaval Giani
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20070817084320.26003.32578.sendpatchset@balbir-laptop \
--to=balbir@linux.vnet.ibm.com \
--cc=a.p.zijlstra@chello.nl \
--cc=akpm@linux-foundation.org \
--cc=containers@lists.osdl.org \
--cc=dhaval@linux.vnet.ibm.com \
--cc=ebiederm@xmission.com \
--cc=haveblue@us.ibm.com \
--cc=kamezawa.hiroyu@jp.fujitsu.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=menage@google.com \
--cc=npiggin@suse.de \
--cc=svaidy@linux.vnet.ibm.com \
--cc=xemul@openvz.org \
--cc=yamamoto@valinux.co.jp \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).