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From: Thomas Gleixner <tglx@linutronix.de>
To: Thavatchai Makphaibulchoke <thavatchai.makpahibulchoke@hp.com>
Cc: Steven Rostedt <rostedt@goodmis.org>,
	Thavatchai Makphaibulchoke <tmac@hp.com>,
	linux-kernel@vger.kernel.org, mingo@redhat.com,
	linux-rt-users@vger.kernel.org, umgwanakikbuti@gmail.com,
	Peter Zijlstra <peterz@infradead.org>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: Re: [PATCH v2 1/2] rtmutex Real-Time Linux: Fixing kernel BUG at kernel/locking/rtmutex.c:997!
Date: Wed, 8 Apr 2015 10:50:37 +0200 (CEST)	[thread overview]
Message-ID: <alpine.DEB.2.11.1504081044130.3845@nanos> (raw)
In-Reply-To: <55247C96.1080707@hp.com>

On Tue, 7 Apr 2015, Thavatchai Makphaibulchoke wrote:
> On 04/06/2015 07:59 PM, Steven Rostedt wrote:
> In this case we are not actually boosting the idle_task priority, which
> should be OK.  But the warning could be very overwhelming on some
> platforms. TO keep the warning, I decided not to boots priority.  Please
> let me know if you have any suggestion.

Don't even try to get this working. Taking the lock in idle/interrupt
context is just plain wrong.

The proper solution is to get rid of the locking requirement and that
needs some thought on the timer wheel code.

Thanks,

	tglx

  reply	other threads:[~2015-04-08  8:50 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-20  1:31 [PATCH 3.14.25-rt22 0/2] rtmutex Real-Time Linux: fix kernel BUG at kernel/locking/rtmutex.c:997! and some optimization Thavatchai Makphaibulchoke
2015-02-20  1:31 ` [PATCH 3.14.25-rt22 1/2] rtmutex Real-Time Linux: Fixing kernel BUG at kernel/locking/rtmutex.c:997! Thavatchai Makphaibulchoke
2015-02-20  4:53   ` Steven Rostedt
2015-02-20 18:54     ` Thavatchai Makphaibulchoke
2015-02-21  1:49       ` Steven Rostedt
2015-02-23 18:37   ` Steven Rostedt
2015-02-24  0:16     ` Thavatchai Makphaibulchoke
2015-02-24  0:57       ` Steven Rostedt
2015-02-26 13:56         ` Sebastian Andrzej Siewior
2015-02-26 14:06           ` Steven Rostedt
2015-03-06 12:19             ` Sebastian Andrzej Siewior
2015-03-09 16:36               ` Steven Rostedt
2015-03-09 16:49                 ` Sebastian Andrzej Siewior
2015-02-20  1:31 ` [PATCH 3.14.25-rt22 2/2] kernel/locking/rtmutex.c: some code optimization Thavatchai Makphaibulchoke
2015-04-07  1:26 ` [PATCH v2 0/2] rtmutex Real-Time Linux: fix BUG at kernel/locking/rtmutex.c:997! Thavatchai Makphaibulchoke
2015-04-07  1:26   ` [PATCH v2 1/2] rtmutex Real-Time Linux: Fixing kernel " Thavatchai Makphaibulchoke
2015-04-07  1:59     ` Steven Rostedt
2015-04-07  5:09       ` Mike Galbraith
2015-04-07 10:29         ` Peter Zijlstra
2015-04-07 10:49           ` Mike Galbraith
2015-04-07 10:56             ` Peter Zijlstra
2015-04-07 11:01               ` Mike Galbraith
2015-04-08  0:55       ` Thavatchai Makphaibulchoke
2015-04-08  8:50         ` Thomas Gleixner [this message]
2015-04-09 22:56           ` Thavatchai Makphaibulchoke
2015-04-07 11:23     ` Thomas Gleixner
2015-04-07 11:47       ` Mike Galbraith
2015-04-07 12:04         ` Peter Zijlstra
2015-04-07 12:07           ` Peter Zijlstra
2015-04-07 12:41           ` Steven Rostedt
2015-04-07 12:54             ` Peter Zijlstra
2015-04-07 13:58               ` Steven Rostedt
2015-04-07 18:12           ` Jason Low
2015-04-07 19:17             ` Thomas Gleixner
2015-04-07 19:57               ` Jason Low
2015-04-07 21:38                 ` Thomas Gleixner
2015-04-07  1:26   ` [PATCH v2 2/2] kernel/locking/rtmutex.c: some code optimization Thavatchai Makphaibulchoke

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