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Re: [patch 1/2] add ALL_CPUS option to stop_machine_run()

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From: Ingo Molnar <mingo@...>
To: Max Krasnyanskiy <maxk@...>
Cc: Jason Baron <jbaron@...>, Mathieu Desnoyers <mathieu.desnoyers@...>, <akpm@...>, <linux-kernel@...>, Rusty Russell <rusty@...>, Peter Zijlstra <a.p.zijlstra@...>
Subject: Re: [patch 1/2] add ALL_CPUS option to stop_machine_run()
Date: Friday, February 29, 2008 - 3:15 pm

* Max Krasnyanskiy <maxk@qualcomm.com> wrote:


i'm not "an RT guy", -rt is just one of the many projects i've been 
involved with.

and no, i dont think stop machine is "evil" - it's currently the best 
way to do certain things. If you can solve it better then sure, i'm 
awaiting your patches - but the only patch i saw from you so far was the 
one that turned off stop-machine for isolated cpus - which was 
incredibly broken and ignored the problem altogether.

Right now the answer is: "if you want to do hard RT then avoid doing 
things like loading modules". (which you should avoid while doing 
hard-RT anyway)

	Ingo
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Messages in current thread:
[patch 1/7] Immediate Values - Architecture Independent Code, Mathieu Desnoyers, (Sat Feb 2, 5:08 pm)
Re: [patch 1/7] Immediate Values - Architecture Independent ..., Jason Baron, (Tue Feb 26, 6:52 pm)
Re: [patch 1/7] Immediate Values - Architecture Independent ..., Mathieu Desnoyers, (Wed Feb 27, 3:05 pm)
Re: [patch 1/7] Immediate Values - Architecture Independent ..., Jason Baron, (Thu Feb 28, 12:50 pm)
[patch 2/2] implement immediate updating via stop_machine_ru..., Jason Baron, (Thu Feb 28, 12:37 pm)
Re: [patch 2/2] implement immediate updating via stop_machin..., Mathieu Desnoyers, (Fri Feb 29, 9:43 am)
[patch 1/2] add ALL_CPUS option to stop_machine_run(), Jason Baron, (Thu Feb 28, 12:33 pm)
Re: [patch 1/2] add ALL_CPUS option to stop_machine_run(), Max Krasnyanskiy, (Thu Feb 28, 6:09 pm)
Re: [patch 1/2] add ALL_CPUS option to stop_machine_run(), Rusty Russell, (Sun Mar 2, 7:32 pm)
Re: [patch 1/2] add ALL_CPUS option to stop_machine_run(), Ingo Molnar, (Fri Feb 29, 5:00 am)
Re: [patch 1/2] add ALL_CPUS option to stop_machine_run(), Max Krasnyanskiy, (Fri Feb 29, 2:24 pm)
Re: [patch 1/2] add ALL_CPUS option to stop_machine_run(), Ingo Molnar, (Fri Feb 29, 3:15 pm)
Re: [patch 1/2] add ALL_CPUS option to stop_machine_run(), Rusty Russell, (Mon Mar 3, 12:12 am)
Re: [patch 1/2] add ALL_CPUS option to stop_machine_run(), Max Krasnyanskiy, (Mon Mar 3, 8:30 pm)
Re: [patch 1/2] add ALL_CPUS option to stop_machine_run(), Rusty Russell, (Mon Mar 3, 10:36 pm)
Re: [patch 1/2] add ALL_CPUS option to stop_machine_run(), Max Krasnyansky, (Tue Mar 4, 12:11 am)
Re: [patch 1/2] add ALL_CPUS option to stop_machine_run(), Max Krasnyanskiy, (Fri Feb 29, 3:58 pm)
Re: [patch 1/2] add ALL_CPUS option to stop_machine_run(), Mathieu Desnoyers, (Thu Feb 28, 6:14 pm)
Re: [patch 1/2] add ALL_CPUS option to stop_machine_run(), Jason Baron, (Thu Feb 28, 10:39 pm)
Re: [patch 1/7] Immediate Values - Architecture Independent ..., Mathieu Desnoyers, (Tue Feb 26, 7:12 pm)
Re: [patch 1/7] Immediate Values - Architecture Independent ..., Jason Baron, (Wed Feb 27, 1:01 pm)
Re: [patch 1/7] Immediate Values - Architecture Independent ..., Mathieu Desnoyers, (Tue Feb 26, 7:34 pm)
Re: [patch 1/7] Immediate Values - Architecture Independent ..., Jason Baron, (Wed Feb 27, 12:44 pm)