linux-kernel - [RFC PATCH 0/1] sched: Add a new API to find the prefer idlest cpu

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <1343026634.13461.15.camel@oc3660625478.ibm.com>
Date:	Sun, 22 Jul 2012 23:57:14 -0700
From:	Shirley Ma <mashirle@...ibm.com>
To:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Cc:	"Michael S. Tsirkin" <mst@...hat.com>, vivek@...ibm.com,
	sri@...ibm.com
Subject: [RFC PATCH 0/1] sched: Add a new API to find the prefer idlest cpu

Introduce a new API to choose per-cpu thread from cgroup control cpuset
(allowed) and preferred cpuset (local numa-node).

The receiving cpus of a networking device are not under cgroup controls.
When such a networking device uses per-cpu thread model, the cpu which
is chose to process the packets might not be part of cgroup cpusets
without this API. On numa system, the preferred cpusets would help to
reduce expensive cross memory access to/from the other node.

Signed-off-by: Shirley Ma <xma@...ibm.com>
---

 include/linux/sched.h |    2 ++
 kernel/sched/fair.c   |   30 ++++++++++++++++++++++++++++++
 2 files changed, 32 insertions(+), 0 deletions(-)

Thanks
Shirley

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/