* /dev/vcs - poll for changes?
@ 2009-04-17 15:05 Phil Endecott
2009-04-18 8:11 ` Andi Kleen
0 siblings, 1 reply; 2+ messages in thread
From: Phil Endecott @ 2009-04-17 15:05 UTC (permalink / raw)
To: Linux Kernel Mailing List
Dear Experts,
Is there a way to detect when the content of a /dev/vcs* has changed?
I have some code that currently polls, which is obviously sub-optimal.
I was hoping that there would be some trick like look at the
modification time, but I haven't found anything. If this isn't
currently possible, how easily could it be added? What would the
preferred API be, if it were added?
Thanks for any suggestions.
Phil.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: /dev/vcs - poll for changes?
2009-04-17 15:05 /dev/vcs - poll for changes? Phil Endecott
@ 2009-04-18 8:11 ` Andi Kleen
0 siblings, 0 replies; 2+ messages in thread
From: Andi Kleen @ 2009-04-18 8:11 UTC (permalink / raw)
To: Phil Endecott; +Cc: Linux Kernel Mailing List
"Phil Endecott" <phil_wueww_endecott@chezphil.org> writes:
> Dear Experts,
>
> Is there a way to detect when the content of a /dev/vcs* has changed?
> I have some code that currently polls, which is obviously sub-optimal.
> I was hoping that there would be some trick like look at the
> modification time, but I haven't found anything. If this isn't
> currently possible, how easily could it be added? What would the
> preferred API be, if it were added?
The first question would be: why do you want to do this?
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2009-04-17 15:05 /dev/vcs - poll for changes? Phil Endecott
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