Re: RFC: Add support for monotonic clock for 2.6

[James Courtier-Dutton <James@superbug.co.uk>]

Takashi Iwai wrote:
> At Tue, 27 Feb 2007 15:52:41 +0100 (CET),
> Jaroslav Kysela wrote:
>> Hi,
>>
>> 	in 2.6 kernels, we can use ktime_get_ts() function to get 
>> monotonic time which can be used for PCM timestamps. I would propose to 
>> reuse the SNDRV_PCM_IOCTL_TSTAMP ioctl to enable using of monotonic clock.
>> The "enable" (int) argument might mean:
>>
>> 0: standard clock - getnstimeofday()
>> 1: standard clock - getnstimeofday() - for "compatibility"
>> 2: monotonic clock - ktime_get_ts()
> 
> Good to add a new feature...  but is there any user of this PCM
> timestamp so far?  I see some good purposes but rarely seen in the
> reality, unfortunately...
> 
> 
> Takashi
> 

There are some good applications for it, but I have not got round to 
writing them yet!

James




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