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Message-Id: <1351517296-9173-1-git-send-email-fweisbec@gmail.com>
Date: Mon, 29 Oct 2012 14:28:07 +0100
From: Frederic Weisbecker <fweisbec@...il.com>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Frederic Weisbecker <fweisbec@...il.com>,
Peter Zijlstra <peterz@...radead.org>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...nel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Steven Rostedt <rostedt@...dmis.org>,
Paul Gortmaker <paul.gortmaker@...driver.com>
Subject: [RFC PATCH 0/9] printk: Make it usable on nohz CPUs v3
Hi,
Changes since v2:
* Use an irq_work flag instead of a queue parameter to define whether
we want an IPI or not. This way it becomes a work property that can't
change during its lifecyle. It more simple that way.
* Fix some build errors reported by Wu Fengguang.
* Send an IPI even on non-empty queues, in case it's only filled with lazy
works.
* Fix a race when claiming is concurrent with another CPU.
Only boot-tested on x86 for now.
Testing can be made by pulling:
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
nohz/printk-v3
Thanks.
Frederic Weisbecker (9):
irq_work: Fix racy check on work pending flag
irq_work: Remove CONFIG_HAVE_IRQ_WORK
irq_work: Move irq_work_raise() declaration/default definition to
arch headers
irq_work: Let the arch tell us about self-IPI support
x86: Implement arch_irq_work_has_ipi()
nohz: Add API to check tick state
irq_work: Make self-IPIs optable
irq_work: Handle queuing without IPI support in dyntick idle mode
printk: Wake up klogd using irq_work
arch/alpha/Kconfig | 1 -
arch/alpha/include/asm/irq_work.h | 9 +++
arch/alpha/kernel/time.c | 2 +-
arch/arm/Kconfig | 1 -
arch/arm/include/asm/irq_work.h | 1 +
arch/arm64/Kconfig | 1 -
arch/arm64/include/asm/irq_work.h | 1 +
arch/avr32/include/asm/irq_work.h | 1 +
arch/blackfin/Kconfig | 1 -
arch/blackfin/include/asm/irq_work.h | 1 +
arch/c6x/include/asm/irq_work.h | 1 +
arch/cris/include/asm/irq_work.h | 1 +
arch/frv/Kconfig | 1 -
arch/frv/include/asm/irq_work.h | 1 +
arch/h8300/include/asm/irq_work.h | 1 +
arch/hexagon/Kconfig | 1 -
arch/hexagon/include/asm/irq_work.h | 1 +
arch/ia64/include/asm/irq_work.h | 1 +
arch/m32r/include/asm/irq_work.h | 1 +
arch/m68k/include/asm/irq_work.h | 1 +
arch/microblaze/include/asm/irq_work.h | 1 +
arch/mips/Kconfig | 1 -
arch/mips/include/asm/irq_work.h | 1 +
arch/mn10300/include/asm/irq_work.h | 1 +
arch/openrisc/include/asm/irq_work.h | 1 +
arch/parisc/Kconfig | 1 -
arch/parisc/include/asm/irq_work.h | 1 +
arch/powerpc/Kconfig | 1 -
arch/powerpc/include/asm/irq_work.h | 8 +++
arch/powerpc/kernel/time.c | 2 +-
arch/s390/Kconfig | 1 -
arch/s390/include/asm/irq_work.h | 1 +
arch/score/include/asm/irq_work.h | 1 +
arch/sh/Kconfig | 1 -
arch/sh/include/asm/irq_work.h | 1 +
arch/sparc/Kconfig | 1 -
arch/sparc/include/asm/irq_work.h | 8 +++
arch/sparc/kernel/pcr.c | 2 +-
arch/tile/include/asm/irq_work.h | 1 +
arch/um/include/asm/irq_work.h | 1 +
arch/unicore32/include/asm/irq_work.h | 1 +
arch/x86/Kconfig | 1 -
arch/x86/include/asm/irq_work.h | 15 +++++
arch/x86/kernel/irq_work.c | 6 +-
arch/xtensa/include/asm/irq_work.h | 1 +
drivers/staging/iio/trigger/Kconfig | 1 -
include/asm-generic/irq_work.h | 23 ++++++++
include/linux/irq_work.h | 32 ++++++++++++
include/linux/printk.h | 3 -
include/linux/tick.h | 17 ++++++-
init/Kconfig | 5 +--
kernel/irq_work.c | 88 ++++++++++++++++++++++----------
kernel/printk.c | 12 ++---
kernel/time/tick-sched.c | 7 ++-
kernel/timer.c | 1 -
55 files changed, 211 insertions(+), 67 deletions(-)
create mode 100644 arch/alpha/include/asm/irq_work.h
create mode 100644 arch/arm/include/asm/irq_work.h
create mode 100644 arch/arm64/include/asm/irq_work.h
create mode 100644 arch/avr32/include/asm/irq_work.h
create mode 100644 arch/blackfin/include/asm/irq_work.h
create mode 100644 arch/c6x/include/asm/irq_work.h
create mode 100644 arch/cris/include/asm/irq_work.h
create mode 100644 arch/frv/include/asm/irq_work.h
create mode 100644 arch/h8300/include/asm/irq_work.h
create mode 100644 arch/hexagon/include/asm/irq_work.h
create mode 100644 arch/ia64/include/asm/irq_work.h
create mode 100644 arch/m32r/include/asm/irq_work.h
create mode 100644 arch/m68k/include/asm/irq_work.h
create mode 100644 arch/microblaze/include/asm/irq_work.h
create mode 100644 arch/mips/include/asm/irq_work.h
create mode 100644 arch/mn10300/include/asm/irq_work.h
create mode 100644 arch/openrisc/include/asm/irq_work.h
create mode 100644 arch/parisc/include/asm/irq_work.h
create mode 100644 arch/powerpc/include/asm/irq_work.h
create mode 100644 arch/s390/include/asm/irq_work.h
create mode 100644 arch/score/include/asm/irq_work.h
create mode 100644 arch/sh/include/asm/irq_work.h
create mode 100644 arch/sparc/include/asm/irq_work.h
create mode 100644 arch/tile/include/asm/irq_work.h
create mode 100644 arch/um/include/asm/irq_work.h
create mode 100644 arch/unicore32/include/asm/irq_work.h
create mode 100644 arch/x86/include/asm/irq_work.h
create mode 100644 arch/xtensa/include/asm/irq_work.h
create mode 100644 include/asm-generic/irq_work.h
--
1.7.5.4
--
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