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From: Frederic Weisbecker <frederic@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Frederic Weisbecker <frederic@kernel.org>,
	"Paul E . McKenney" <paulmck@linux.vnet.ibm.com>,
	Thomas Gleixner <tglx@linutronix.de>
Subject: [PATCH 0/4] irq_work: Fix ordering issue
Date: Fri,  8 Nov 2019 17:08:54 +0100	[thread overview]
Message-ID: <20191108160858.31665-1-frederic@kernel.org> (raw)

Patches 1 and 2 are the fix part, 3 is a cleanup, 4 is
extra-optimization (rfc).

Thanks to Paul that confirmed my doubts about ordering on cmpxchg() failure.

Frederic Weisbecker (4):
  irq_work: Convert flags to atomic_t
  irq_work: Fix irq_work_claim() ordering
  irq_work: Slightly simplify IRQ_WORK_PENDING clearing
  irq_work: Weaken ordering in irq_work_run_list()

 include/linux/irq_work.h | 10 +++++++---
 kernel/irq_work.c        | 35 ++++++++++++++---------------------
 kernel/printk/printk.c   |  2 +-
 3 files changed, 22 insertions(+), 25 deletions(-)

-- 
2.23.0


             reply	other threads:[~2019-11-08 16:09 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-08 16:08 Frederic Weisbecker [this message]
2019-11-08 16:08 ` [PATCH 1/4] irq_work: Convert flags to atomic_t Frederic Weisbecker
2019-11-11  8:00   ` Ingo Molnar
2019-11-11 22:56     ` Frederic Weisbecker
2019-11-11  9:32   ` [tip: irq/core] " tip-bot2 for Frederic Weisbecker
2019-11-08 16:08 ` [PATCH 2/4] irq_work: Fix irq_work_claim() ordering Frederic Weisbecker
2019-11-11  7:20   ` Ingo Molnar
2019-11-11 23:17     ` Frederic Weisbecker
2019-11-11  9:32   ` [tip: irq/core] irq_work: Fix irq_work_claim() memory ordering tip-bot2 for Frederic Weisbecker
2019-11-08 16:08 ` [PATCH 3/4] irq_work: Slightly simplify IRQ_WORK_PENDING clearing Frederic Weisbecker
2019-11-11  9:32   ` [tip: irq/core] " tip-bot2 for Frederic Weisbecker
2019-11-12 20:27   ` [PATCH 3/4] " Leonard Crestez
2019-11-13  0:22     ` Frederic Weisbecker
2019-11-08 16:08 ` [RFC PATCH 4/4] irq_work: Weaken ordering in irq_work_run_list() Frederic Weisbecker
2019-11-11  8:43   ` Peter Zijlstra
2019-11-11 22:38     ` Frederic Weisbecker

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