linux-kernel - Re: [tip:smp/hotplug] idle: Implement generic idle function

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Date:	Mon, 15 Apr 2013 15:25:29 -0700
From:	Tony Luck <tony.luck@...il.com>
To:	Ingo Molnar <mingo@...nel.org>, "H. Peter Anvin" <hpa@...or.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Peter Zijlstra <peterz@...radead.org>,
	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>, magnus.damm@...il.com
Cc:	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:smp/hotplug] idle: Implement generic idle function

Built next-20130415 and got this on ia64 early in boot:

WARNING: at kernel/cpu/idle.c:94 cpu_idle_loop+0x360/0x380()
Hardware name: server rx2620
Modules linked in:

Call Trace:
 [<a000000100014ac0>] show_stack+0x80/0xa0
                                sp=a000000101287c50 bsp=a000000101280e48
 [<a000000100dabd40>] dump_stack+0x30/0x50
                                sp=a000000101287e20 bsp=a000000101280e30
 [<a000000100073e40>] warn_slowpath_common+0xc0/0x100
                                sp=a000000101287e20 bsp=a000000101280de8
 [<a000000100073ec0>] warn_slowpath_null+0x40/0x60
                                sp=a000000101287e20 bsp=a000000101280dc0
 [<a0000001000fa7a0>] cpu_idle_loop+0x360/0x380
                                sp=a000000101287e20 bsp=a000000101280d80
 [<a0000001000fa800>] cpu_startup_entry+0x40/0x60
                                sp=a000000101287e20 bsp=a000000101280d68
 [<a000000100d9f460>] rest_init+0x100/0x120
                                sp=a000000101287e20 bsp=a000000101280d50
 [<a00000010114d3b0>] start_kernel+0x770/0x890
                                sp=a000000101287e20 bsp=a000000101280cd0
 [<a000000100d9f320>] start_ap+0x760/0x780
                                sp=a000000101287e30 bsp=a000000101280bc0
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