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Date: Thu, 6 Mar 2014 23:13:33 +1100 From: Kevin Easton <kevin@...rana.org> To: Andi Kleen <andi@...stfloor.org> Cc: Thomas Gleixner <tglx@...utronix.de>, Khalid Aziz <khalid.aziz@...cle.com>, One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>, "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...nel.org>, peterz@...radead.org, akpm@...ux-foundation.org, viro@...iv.linux.org.uk, oleg@...hat.com, linux-kernel@...r.kernel.org Subject: Re: [RFC] [PATCH] Pre-emption control for userspace On Tue, Mar 04, 2014 at 04:51:15PM -0800, Andi Kleen wrote: > Anything else? If it was possible to make the time remaining in the current timeslice available to userspace through the vdso, the thread could do something like: if (sys_timeleft() < CRITICAL_SECTION_SIZE) yield(); lock(); to avoid running out of timeslice in the middle of the critical section. - Kevin -- 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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