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SubjectRe: [PATCH v2 2/3] sysfs cpu probe/release files
Nathan Fontenot writes:

> In order to support kernel DLPAR of CPU resources we need to provide an
> interface to add (probe) and remove (release) the resource from the system.
> This patch Creates new generic probe and release sysfs files to facilitate
> cpu probe/release. The probe/release interface provides for allowing each
> arch to supply their own routines for implementing the backend of adding
> and removing cpus to/from the system.
> This also creates the powerpc specific stubs to handle the arch callouts
> from writes to the sysfs files.
> The creation and use of these files is regulated by the
> CONFIG_ARCH_CPU_PROBE_RELEASE option so that only architectures that need the
> capability will have the files created.
> Signed-off-by: Nathan Fontenot <>

Acked-by: Paul Mackerras <>

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