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Date: Mon, 22 Jun 2015 14:21:41 +0300 From: Adrian Hunter <adrian.hunter@...el.com> To: Thomas Gleixner <tglx@...utronix.de> CC: Andi Kleen <ak@...ux.intel.com>, Andy Lutomirski <luto@...capital.net>, LKML <linux-kernel@...r.kernel.org>, Linus Torvalds <torvalds@...ux-foundation.org>, X86 ML <x86@...nel.org>, "H. Peter Anvin" <hpa@...or.com>, Len Brown <lenb@...nel.org>, George Spelvin <linux@...izon.com>, Ingo Molnar <mingo@...nel.org>, a.p.zijlstra@...llo.nl, arjan@...radead.org, bp@...en8.de, penberg@....fi, akpm@...ux-foundation.org Subject: Re: [PATCH RFC] x86, tsc: Allow for high latency in quick_pit_calibrate() On 03/06/15 19:23, Thomas Gleixner wrote: > On Wed, 3 Jun 2015, Adrian Hunter wrote: > >> On 03/06/15 06:30, Andi Kleen wrote: >>>> Then the changelog should say that I think. The current text says >>>> "Fast TSC calibration will always fail", which, to me, suggests that >>>> either the slow calibration will work or that the changelog message >>>> should be changed. >>> >>> Ok. No, the slow calibration works I believe. >> >> Yeah, so the (only?) downside is the 50ms wasted on Fast TSC >> calibration. What about this? > > I'm certainly happy to apply this one. George Spelvin began investigating improving quick_pit_calibrate() but Ingo anyway suggested this patch as the first, so can this be applied? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in Please read the FAQ at http://www.tux.org/lkml/
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