From: Kevin Hilman <khilman@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Davidlohr Bueso <dave@stgolabs.net>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Steven Rostedt <rostedt@goodmis.org>,
Mike Galbraith <umgwanakikbuti@gmail.com>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
lkml <linux-kernel@vger.kernel.org>,
Tyler Baker <tyler.baker@linaro.org>,
Olof Johansson <olof@lixom.net>, Tony Lindgren <tony@atomide.com>,
linux-omap <linux-omap@vger.kernel.org>,
Santosh Shilimkar <ssantosh@kernel.org>,
Felipe Balbi <balbi@ti.com>, Nishanth Menon <nm@ti.com>
Subject: Re: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
Date: Fri, 19 Jun 2015 12:32:56 -0700 [thread overview]
Message-ID: <7ha8vvtrx3.fsf@deeprootsystems.com> (raw)
In-Reply-To: <alpine.DEB.2.11.1506192053280.4107@nanos> (Thomas Gleixner's message of "Fri, 19 Jun 2015 20:54:44 +0200 (CEST)")
Thomas Gleixner <tglx@linutronix.de> writes:
> On Fri, 19 Jun 2015, Kevin Hilman wrote:
>> On Wed, Jun 17, 2015 at 1:33 AM, Sebastian Andrzej Siewior
>> A handful of boot test failures on ARM/OMAP were found by kernelci.org
>> in next-20150619[1] and were bisected down to this patch, which hit
>> next-20150619 in the form of commit 881bd58d6e9e (futex: Lower the
>> lock contention on the HB lock during wake up). I confirmed that
>> reverting that patch on top of next-20150619 gets things booting again
>> for the affected platforms.
>>
>> I haven't debugged this any further, but full boot logs are available
>> for the boot failures[2][3] and the linux-omap list and maintainer are
>> Cc'd here to help investigate further if needed.
>
> Found it. Dunno, how I missed that one. Fix below.
>
Yup, that fix on top of next-20150619 gets the two OMAP platforms
booting again.
Tested-by: Kevin Hilman <khilman@linaro.org>
Kevin
WARNING: multiple messages have this Message-ID (diff)
From: Kevin Hilman <khilman@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Davidlohr Bueso <dave@stgolabs.net>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Steven Rostedt <rostedt@goodmis.org>,
Mike Galbraith <umgwanakikbuti@gmail.com>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
lkml <linux-kernel@vger.kernel.org>,
Tyler Baker <tyler.baker@linaro.org>,
Olof Johansson <olof@lixom.net>, Tony Lindgren <tony@atomide.com>,
linux-omap <linux-omap@vger.kernel.org>,
Santosh Shilimkar <ssantosh@kernel.org>,
Felipe Balbi <balbi@ti.com>, Nishanth Menon <nm@ti.com>
Subject: Re: [PATCH v2] futex: lower the lock contention on the HB lock during wake up
Date: Fri, 19 Jun 2015 12:32:56 -0700 [thread overview]
Message-ID: <7ha8vvtrx3.fsf@deeprootsystems.com> (raw)
In-Reply-To: <alpine.DEB.2.11.1506192053280.4107@nanos> (Thomas Gleixner's message of "Fri, 19 Jun 2015 20:54:44 +0200 (CEST)")
Thomas Gleixner <tglx@linutronix.de> writes:
> On Fri, 19 Jun 2015, Kevin Hilman wrote:
>> On Wed, Jun 17, 2015 at 1:33 AM, Sebastian Andrzej Siewior
>> A handful of boot test failures on ARM/OMAP were found by kernelci.org
>> in next-20150619[1] and were bisected down to this patch, which hit
>> next-20150619 in the form of commit 881bd58d6e9e (futex: Lower the
>> lock contention on the HB lock during wake up). I confirmed that
>> reverting that patch on top of next-20150619 gets things booting again
>> for the affected platforms.
>>
>> I haven't debugged this any further, but full boot logs are available
>> for the boot failures[2][3] and the linux-omap list and maintainer are
>> Cc'd here to help investigate further if needed.
>
> Found it. Dunno, how I missed that one. Fix below.
>
Yup, that fix on top of next-20150619 gets the two OMAP platforms
booting again.
Tested-by: Kevin Hilman <khilman@linaro.org>
Kevin
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next prev parent reply other threads:[~2015-06-19 19:32 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-19 17:24 [PATCH -tip 0/4] rtmutex: Spin on owner Davidlohr Bueso
2015-05-19 17:24 ` [PATCH 1/4] locking/rtmutex: Implement lockless top-waiter wakeup Davidlohr Bueso
2015-06-05 12:35 ` Thomas Gleixner
2015-06-16 19:29 ` [PATCH] futex: lower the lock contention on the HB lock during wake up Sebastian Andrzej Siewior
2015-06-16 19:50 ` Davidlohr Bueso
2015-06-17 8:33 ` [PATCH v2] " Sebastian Andrzej Siewior
2015-06-17 14:17 ` Mike Galbraith
2015-06-17 14:28 ` Sebastian Andrzej Siewior
2015-06-17 14:31 ` Mike Galbraith
2015-06-21 4:35 ` Mike Galbraith
2015-06-18 20:30 ` [tip:sched/core] futex: Lower " tip-bot for Sebastian Andrzej Siewior
2015-06-19 17:51 ` [PATCH v2] futex: lower " Kevin Hilman
2015-06-19 17:51 ` Kevin Hilman
2015-06-19 18:54 ` Thomas Gleixner
2015-06-19 18:54 ` Thomas Gleixner
2015-06-19 19:32 ` Kevin Hilman [this message]
2015-06-19 19:32 ` Kevin Hilman
2015-06-19 19:33 ` [tip:sched/locking] futex: Lower " tip-bot for Sebastian Andrzej Siewior
2015-06-18 20:30 ` [tip:sched/core] locking/rtmutex: Implement lockless top-waiter wakeup tip-bot for Davidlohr Bueso
2015-05-19 17:24 ` [PATCH 2/4] locking/rtmutex: Use cmp-cmpxchg Davidlohr Bueso
2015-06-05 12:38 ` Thomas Gleixner
2015-06-06 15:27 ` Davidlohr Bueso
2015-06-15 18:34 ` Jason Low
2015-06-15 19:37 ` Davidlohr Bueso
2015-06-16 1:00 ` Jason Low
2015-05-19 17:24 ` [PATCH 3/4] locking/rtmutex: Update stale plist comments Davidlohr Bueso
2015-06-05 12:39 ` Thomas Gleixner
2015-06-18 20:57 ` [tip:sched/core] " tip-bot for Davidlohr Bueso
2015-06-19 19:33 ` [tip:sched/locking] " tip-bot for Davidlohr Bueso
2015-05-19 17:24 ` [PATCH -rfc 4/4] locking/rtmutex: Support spin on owner (osq) Davidlohr Bueso
2015-05-20 7:11 ` Paul Bolle
2015-05-25 20:35 ` Davidlohr Bueso
2015-05-29 15:19 ` Davidlohr Bueso
2015-05-29 18:01 ` Davidlohr Bueso
2015-06-05 13:59 ` Thomas Gleixner
2015-06-09 4:41 ` Davidlohr Bueso
2015-06-09 9:29 ` Thomas Gleixner
2015-06-09 11:21 ` Peter Zijlstra
2015-06-09 12:53 ` Thomas Gleixner
2015-05-25 20:35 ` [PATCH -tip 0/4] rtmutex: Spin on owner Davidlohr Bueso
2015-05-26 19:05 ` Thomas Gleixner
-- strict thread matches above, loose matches on Subject: below --
2015-09-15 1:26 [PATCH v2] futex: lower the lock contention on the HB lock during wake up Zhu Jefferry
2015-09-16 0:01 ` Thomas Gleixner
2015-09-16 0:17 ` Zhu Jefferry
2015-09-16 8:06 ` Thomas Gleixner
2015-09-16 9:52 ` Zhu Jefferry
2015-09-16 10:22 ` Thomas Gleixner
2015-09-16 11:13 ` Zhu Jefferry
2015-09-16 13:39 ` Thomas Gleixner
2015-09-16 23:57 ` Zhu Jefferry
2015-09-17 7:08 ` Thomas Gleixner
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