Messages in this thread | | | Date | Thu, 23 Apr 2009 18:55:31 -0400 (EDT) | From | Christoph Lameter <> | Subject | Re: [patch 2/2] slub: add Documentation/ABI/testing/sysfs-kernel-slab |
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On Thu, 23 Apr 2009, David Rientjes wrote:
> I'm more concerned with the userspace API. You're comfortable with > letting userspace determine what allocator the kernel is using either by > testing for the presence of certain slub or slqb-specific files or > checking the config?
Why would userspace have to test? If the fields have the same semantics then we are fine.
> That should be fine since there's parity among the files that both > allocators share, but seems fragile if an allocator adds a file that was > previously only applicable to the other or the API happens to change.
Right. The newly added file must not be in use by another allocator.
> My thinking was that /sys/kernel/slqb would be a permanent reference point > that userspace could easily test to determine what API is available.
The API is hopefully generic enought to accomodate all allocators.
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