Messages in this thread | | | Subject | Re: config PROC_CHILDREN | From | Iago López Galeiras <> | Date | Wed, 8 Jul 2015 16:18:28 +0200 |
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On 07/04/2015 07:07 PM, Jean Delvare wrote: > Hi Iago, > > Please don't top-post. > > On Fri, 3 Jul 2015 11:10:45 +0200, Iago López Galeiras wrote: >> Hi Jean, >> >> The purpose of this option is enabling /proc/<pid>/task/<tid>/children without >> having to enable CHECKPOINT_RESTORE, which is hidden behind EXPERT. >> >> Regarding its lack of help, documentation is in already in place[1] but perhaps >> that's not clear for the user because as you say the Kconfig help text is missing. >> >> I suggest adding something like: >> >> Provides a fast way to retrieve first level children pids of a task. See >> <file:Documentation/filesystems/proc.txt> for more information. >> >> Do you think that's enough? > > That's a start, the reference to Documentation/filesystems/proc.txt is > good but I think we can do better. You need to help the user make the > decision. Why should he/she say Y or N? The user should NOT have to look > at an external documentation file if the answer is N. I would suggest > the following: > > Say Y if running any user-space software which takes benefit from this > interface. For example, rkt is such a piece of software.
That makes it more clear for the user. Thanks!
> That being said, I am curious... Is this interface so expensive that it > really deserves a separate option, instead of always enabling it? This > seems to be a fairly generic feature that a lot of scripts and tools > could benefit from (starting with pstree I suppose.)
I don't think I have enough information to answer that question. I'll CC Cyrill Gorcunov and Andrew Morton.
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Iago López Galeiras Software developer @ Endocode AG iago@endocode.com
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