linux-kernel - [PATCH v2 0/5] static_key: deferred key fixes and improvements

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Message-Id: <1386376806-924-1-git-send-email-rkrcmar@redhat.com>
Date:	Sat,  7 Dec 2013 01:40:01 +0100
From:	Radim Krčmář <rkrcmar@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	kvm@...r.kernel.org, linux-arch@...r.kernel.org,
	rostedt@...dmis.org, pbonzini@...hat.com, tglx@...utronix.de,
	mingo@...hat.com, hpa@...or.com, x86@...nel.org, arnd@...db.de,
	rusty@...tcorp.com.au,
	Radim Krčmář <rkrcmar@...hat.com>
Subject: [PATCH v2 0/5] static_key: deferred key fixes and improvements

This series is made out of three logical parts
 - patches 1 and 2 fix panic caused by accessing freed module memory
 - patches 3 and 4 fix miscounting by static_key_slow_dec_deferred()
 - patch 5 introduces a minor optimization

More jump_label/static_key patches are prepared, but I returned to them
yesterday and implemented a variable jump length on amd64, which
requires some refactoring, porting to remaining architectures, and
retesting, so I'm posting this independent part before it gets overtaken
by higher priority work again
=> This series was tested with additional patches
^ I wrote this on Tuesday and then moved to higher priority work, but
returned with enough courage to post a different first part.
The first part was tested on amd64, s390x and ppc64, the rest also on
armv7.

Applies to next-20131206 and v3.13-rc3.

Radim Krčmář (5):
  static_key: add a section for deferred keys
  static_key: cancel rate limit timer on rmmod
  static_key: add static_key_slow_inc_deferred()
  static_key: keep deferred enabled counter debt
  static_key: improve deferred inc behavior

 arch/x86/kvm/lapic.c                 | 11 +++++----
 arch/x86/kvm/lapic.h                 |  4 +--
 include/asm-generic/vmlinux.lds.h    |  1 +
 include/linux/jump_label_ratelimit.h | 10 ++++++++
 include/linux/module.h               |  3 +++
 include/linux/perf_event.h           |  2 +-
 kernel/events/core.c                 |  8 +++---
 kernel/jump_label.c                  | 47 +++++++++++++++++++++++++++++++-----
 kernel/module.c                      |  4 +++
 9 files changed, 72 insertions(+), 18 deletions(-)

-- 
1.8.4.2

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