linux-kernel - Re: [PATCH 1/4] ktime: add a roundup function

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Message-ID: <alpine.DEB.2.11.1511131512260.3987@nanos>
Date:	Fri, 13 Nov 2015 15:13:45 -0500 (EST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Jacob Pan <jacob.jun.pan@...ux.intel.com>
cc:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	John Stultz <john.stultz@...aro.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	Len Brown <len.brown@...el.com>,
	Rafael Wysocki <rafael.j.wysocki@...el.com>,
	Eduardo Valentin <edubezval@...il.com>,
	Paul Turner <pjt@...gle.com>
Subject: Re: [PATCH 1/4] ktime: add a roundup function

On Fri, 13 Nov 2015, Jacob Pan wrote:

> ktime roundup function can be used to keep timer aligned and
> prevent drift for recurring timeouts.

That tells me a use case, but not WHAT the function does and WHY we
need it.


> 
> +static inline ktime_t ktime_roundup(ktime_t x, ktime_t y)

Kerneldoc comment of this function would be appreciated.

Thanks,

	tglx
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