From: Frederic Weisbecker <fweisbec@gmail.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Paul Gortmaker <paul.gortmaker@windriver.com>,
Anish Kumar <anish198519851985@gmail.com>
Subject: [GIT PULL v2] printk: Make it usable on nohz cpus
Date: Sun, 18 Nov 2012 02:04:43 +0100 [thread overview]
Message-ID: <1353200692-6039-1-git-send-email-fweisbec@gmail.com> (raw)
Ingo,
Please pull the printk support in dynticks mode patches that can
be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git tags/printk-dynticks-for-mingo-v2
for you to fetch changes up to 74876a98a87a115254b3a66a14b27320b7f0acaa:
printk: Wake up klogd using irq_work (2012-11-18 01:01:49 +0100)
It is based on v3.7-rc4.
Changes since previous pull request include support for irq work flush
on CPU offlining and acks from Steve. The rest hasn't changed except some
comment fix.
Thanks.
----------------------------------------------------------------
Support for printk in dynticks mode:
* Fix two races in irq work claiming
* Generalize irq_work support to all archs
* Don't stop tick with irq works pending. This
fix is generally useful and concerns archs that
can't raise self IPIs.
* Flush irq works before CPU offlining.
* Introduce "lazy" irq works that can wait for the
next tick to be executed, unless it's stopped.
* Implement klogd wake up using irq work. This
removes the ad-hoc printk_tick()/printk_needs_cpu()
hooks and make it working even in dynticks mode.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
----------------------------------------------------------------
Frederic Weisbecker (7):
irq_work: Fix racy IRQ_WORK_BUSY flag setting
irq_work: Fix racy check on work pending flag
irq_work: Remove CONFIG_HAVE_IRQ_WORK
nohz: Add API to check tick state
irq_work: Don't stop the tick with pending works
irq_work: Make self-IPIs optable
printk: Wake up klogd using irq_work
Steven Rostedt (2):
irq_work: Flush work on CPU_DYING
irq_work: Warn if there's still work on cpu_down
arch/alpha/Kconfig | 1 -
arch/arm/Kconfig | 1 -
arch/arm64/Kconfig | 1 -
arch/blackfin/Kconfig | 1 -
arch/frv/Kconfig | 1 -
arch/hexagon/Kconfig | 1 -
arch/mips/Kconfig | 1 -
arch/parisc/Kconfig | 1 -
arch/powerpc/Kconfig | 1 -
arch/s390/Kconfig | 1 -
arch/sh/Kconfig | 1 -
arch/sparc/Kconfig | 1 -
arch/x86/Kconfig | 1 -
drivers/staging/iio/trigger/Kconfig | 1 -
include/linux/irq_work.h | 20 ++++++
include/linux/printk.h | 3 -
include/linux/tick.h | 17 ++++-
init/Kconfig | 5 +-
kernel/irq_work.c | 131 ++++++++++++++++++++++++++---------
kernel/printk.c | 36 +++++-----
kernel/time/tick-sched.c | 7 +-
kernel/timer.c | 1 -
22 files changed, 161 insertions(+), 73 deletions(-)
next reply other threads:[~2012-11-18 1:05 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-18 1:04 Frederic Weisbecker [this message]
2012-11-18 1:04 ` [PATCH 1/9] irq_work: Fix racy IRQ_WORK_BUSY flag setting Frederic Weisbecker
2012-11-18 1:04 ` [PATCH 2/9] irq_work: Fix racy check on work pending flag Frederic Weisbecker
2012-11-18 1:04 ` [PATCH 3/9] irq_work: Remove CONFIG_HAVE_IRQ_WORK Frederic Weisbecker
2012-11-18 1:04 ` [PATCH 4/9] nohz: Add API to check tick state Frederic Weisbecker
2012-11-18 1:04 ` [PATCH 5/9] irq_work: Don't stop the tick with pending works Frederic Weisbecker
2012-11-18 1:04 ` [PATCH 6/9] irq_work: Flush work on CPU_DYING Frederic Weisbecker
2012-11-18 1:04 ` [PATCH 7/9] irq_work: Warn if there's still work on cpu_down Frederic Weisbecker
2012-11-18 1:04 ` [PATCH 8/9] irq_work: Make self-IPIs optable Frederic Weisbecker
2012-11-18 1:04 ` [PATCH 9/9] printk: Wake up klogd using irq_work Frederic Weisbecker
2012-12-08 15:02 ` [GIT PULL v2] printk: Make it usable on nohz cpus Ingo Molnar
2012-12-08 22:50 ` Frederic Weisbecker
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