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Date: Tue, 19 Nov 2013 10:47:36 -0800 From: Linus Torvalds <torvalds@...ux-foundation.org> To: Ingo Molnar <mingo@...nel.org>, Josh Boyer <jwboyer@...il.com> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Thomas Gleixner <tglx@...utronix.de>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, "H. Peter Anvin" <hpa@...or.com>, Andrew Morton <akpm@...ux-foundation.org> Subject: Re: [GIT PULL] core kernel update On Tue, Nov 19, 2013 at 7:42 AM, Ingo Molnar <mingo@...nel.org> wrote: > > Josh Boyer (1): > smp/cpumask: Make CONFIG_CPUMASK_OFFSTACK=y usable without debug dependency This seems to be just pure stupid. Why the hell should we ever ask the user whethr they want to force CPUMASK offstack? Seriously, it only leaves room for mistakes and stupidities. There is no reason for any normal use-case to ask the user about this. Even the help message is pure and utter garbage ("This is a bit more expensive, but avoids stack overflow"). The fact is, an on-stack CPUMASK is *smaller* than a pointer to an offstack one when NR_CPU is small. The question makes no sense then. And when NR_CPU is huge, the question makes no sense _either_, since we can't have the cpumasks on stack. Asking the user questions that make no f*cking sense to ask is stupid. And I'm not knowingly pulling stupid crap. Linus -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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