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Date: Wed, 1 Nov 2017 20:38:42 +0100 From: Marc Gonzalez <marc_gonzalez@...madesigns.com> To: Linus Torvalds <torvalds@...ux-foundation.org> 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 01/11/2017 20:09, Linus Torvalds wrote: > On Wed, Nov 1, 2017 at 12:03 PM, Marc Gonzalez 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". Yes, sorry, I wrote "default" when I meant "fallback". (arm32 currently does not define a specific ndelay implementation.) > So stop this idiocy already. About half of what I've seen in this > thread has been pure garbage. OK, I'll just send my patch, and then crawl back under my rock. Regards.
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