linux-kernel - Re: [RFC PATCH v2 1/3] getcpu_cache system call: cache CPU number of running thread

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Message-ID: <alpine.DEB.2.11.1601271822190.3886@nanos>
Date:	Wed, 27 Jan 2016 18:24:22 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Josh Triplett <josh@...htriplett.org>
cc:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Paul Turner <pjt@...gle.com>, Andrew Hunter <ahh@...gle.com>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
	Andy Lutomirski <luto@...capital.net>,
	Andi Kleen <andi@...stfloor.org>,
	Dave Watson <davejwatson@...com>, Chris Lameter <cl@...ux.com>,
	Ingo Molnar <mingo@...hat.com>, Ben Maurer <bmaurer@...com>,
	Steven Rostedt <rostedt@...dmis.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Russell King <linux@....linux.org.uk>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Michael Kerrisk <mtk.manpages@...il.com>
Subject: Re: [RFC PATCH v2 1/3] getcpu_cache system call: cache CPU number
 of running thread

On Wed, 27 Jan 2016, Josh Triplett wrote:
> With the dynamic allocation removed, this seems sensible to me.  One
> minor nit: s/int32_t/uint32_t/g, since a location intended to hold a CPU
> number should never need to hold a negative number.

You try to block the future of computing: https://lwn.net/Articles/638673/