linux-kernel - [PATCH v2 0/3] Fix shutdown of cpu which having throttled rq

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>] [day] [month] [year] [list]

Date:	Tue, 24 Jun 2014 11:53:44 +0400
From:	Kirill Tkhai <ktkhai@...allels.com>
To:	<linux-kernel@...r.kernel.org>
CC:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>, <tkhai@...dex.ru>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	"Mike Galbraith" <umgwanakikbuti@...il.com>,
	<khorenko@...allels.com>, Ben Segall <bsegall@...gle.com>,
	Paul Turner <pjt@...gle.com>
Subject: [PATCH v2 0/3] Fix shutdown of cpu which having throttled rq

This is a result of discussion "[PATCH 1/2] sched: Rework migrate_tasks()":

        https://lkml.org/lkml/2014/6/11/166

The problem is cfs_rq and rt_rq may stay throttled in the moment
of task migration from dead cpu. This patch fixes that for fair
and RT classes. No fix for deadline class yet, it's coming soon.

v2: [1/3]Collision with tg_set_cfs_bandwidth() found by Ben Segall.
	 Code movement.

---

Kirill Tkhai (3):
      sched/fair: Disable runtime_enabled on dying rq
      sched/rt: __disable_runtime: Enqueue just unthrottled rt_rq back on the stack
      sched: Rework check_for_tasks()


 kernel/cpu.c        |   33 ++++++++++++++++++++-------------
 kernel/sched/core.c |   15 +++++++++++----
 kernel/sched/fair.c |   22 ++++++++++++++++++++++
 kernel/sched/rt.c   |    3 +++
 4 files changed, 56 insertions(+), 17 deletions(-)

--
Signed-off-by: Kirill Tkhai <ktkhai@...allels.com>


--
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/