Re: [PATCH] move vm tools from Documentation/vm/ to tools/

[Cong Wang]

On 02/02/2012 10:13 AM, Dave Young wrote:
> On Thu, Feb 2, 2012 at 5:17 AM, Andrew Morton<akpm@xxxxxxxxxxxxxxxxxxxx>  wrote:
> > On Wed, 1 Feb 2012 14:34:20 +0800
> > Dave Young<dyoung@xxxxxxxxxx>  wrote:
> >
> > > tools/ is the better place for vm tools which are used by many people.
> > > Moving them to tools also make them open to more users instead of hide in
> > > Documentation folder.
> >
> > It would be nice to covert these into simple pass/fail tests and
> > promote them to tools/testing/selftests/.
>
> Andrew, I'm not clear about this, do you means to selftest
> hugepage-mmap.c,  hugepage-shm.c  and map_hugetlb.c? I think slabinfo
> and page-types should stay in tools/vm/. Can you explain a bit?

Hey,

Check the comments in these files:

/*
 * hugepage-mmap:
 *
 * Example of using huge page memory in a user application using the mmap
 * system call.


/*
 * hugepage-shm:
 *
 * Example of using huge page memory in a user application using Sys V 
shared
 * memory system calls.  In this example the app is requesting 256MB of
 * memory that is backed by huge pages.  The application uses the flag
 * SHM_HUGETLB in the shmget system call to inform the kernel that it is
 * requesting huge pages.


/*
 * Example of using hugepage memory in a user application using the mmap
 * system call with MAP_HUGETLB flag.

All of them are examples, not tests, not tools, thus Documentation/ is 
the best place for them.
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