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Date: Wed, 1 Nov 2017 12:09:19 -0700 From: Linus Torvalds <torvalds@...ux-foundation.org> To: Marc Gonzalez <marc_gonzalez@...madesigns.com> Cc: Alan Cox <gnomes@...rguk.ukuu.org.uk>, LKML <linux-kernel@...r.kernel.org>, Linux ARM <linux-arm-kernel@...ts.infradead.org>, Steven Rostedt <rostedt@...dmis.org>, Ingo Molnar <mingo@...nel.org>, Thomas Gleixner <tglx@...utronix.de>, Peter Zijlstra <peterz@...radead.org>, John Stultz <john.stultz@...aro.org>, Douglas Anderson <dianders@...omium.org>, Nicolas Pitre <nico@...aro.org>, Mark Rutland <mark.rutland@....com>, Will Deacon <will.deacon@....com>, Jonathan Austin <jonathan.austin@....com>, Arnd Bergmann <arnd@...db.de>, Kevin Hilman <khilman@...nel.org>, Russell King <linux@....linux.org.uk>, Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...eaurora.org>, Mason <slash.tmp@...e.fr> Subject: Re: [RFC] Improving udelay/ndelay on platforms where that is possible On Wed, Nov 1, 2017 at 12:03 PM, Marc Gonzalez <marc_gonzalez@...madesigns.com> wrote: > > By default, ndelay is implemented in terms of udelay. That's very much *NOT* the case. Yes, there is a *fallback* for when somebody doesn't do ndelay() at all, but that doesn't make it the default. It's just a "the architecture didn't implement ndelay at all, we'll work around it". So stop this idiocy already. About half of what I've seen in this thread has been pure garbage. Linus
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