linux-kernel - [PATCH v2 0/2] x86: add xen hypercall preemption

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Date:	Wed, 10 Dec 2014 15:34:45 -0800
From:	"Luis R. Rodriguez" <mcgrof@...not-panic.com>
To:	mingo@...hat.com, peterz@...radead.org
Cc:	tglx@...utronix.de, hpa@...or.com, konrad.wilk@...cle.com,
	david.vrabel@...rix.com, masami.hiramatsu.pt@...achi.com,
	rostedt@...dmis.org, luto@...capital.net, JBeulich@...e.com,
	jgross@...e.com, bpoirier@...e.de, x86@...nel.org,
	xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
	"Luis R. Rodriguez" <mcgrof@...e.com>
Subject: [PATCH v2 0/2] x86: add xen hypercall preemption

From: "Luis R. Rodriguez" <mcgrof@...e.com>

This is my second series which addresses hypercall preemption
on Xen. On the first iteration of this series [0] I tried as
much as possible to avoid cond_resched() type of behaviour
but after good feedback I've determined using something like
cond_resched() but on IRQ context is required for preempting
Xen hypercalls. This introduces and uses the new cond_resched_irq().

[0] https://lkml.org/lkml/2014/11/26/630

Luis R. Rodriguez (2):
  sched: add cond_resched_irq()
  x86/xen: allow privcmd hypercalls to be preempted

 arch/x86/kernel/entry_32.S | 21 +++++++++++++++++++++
 arch/x86/kernel/entry_64.S | 17 +++++++++++++++++
 drivers/xen/Makefile       |  2 +-
 drivers/xen/preempt.c      | 17 +++++++++++++++++
 drivers/xen/privcmd.c      |  2 ++
 include/linux/sched.h      |  7 +++++++
 include/xen/xen-ops.h      | 26 ++++++++++++++++++++++++++
 kernel/sched/core.c        | 10 ++++++++++
 8 files changed, 101 insertions(+), 1 deletion(-)
 create mode 100644 drivers/xen/preempt.c

-- 
2.1.1

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