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Drivers which may pass hotplug policy down to DAX need MMOP_ symbols and the mhp_get_default_online_type function for hotplug use cases. Some drivers (cxl) co-mingle their hotplug and devdax use-cases into the same driver code, and chose the dax_kmem path as the default driver path - making it difficult to require hotplug as a predicate to building the overall driver (it may break other non-hotplug use-cases). Export mhp_get_default_online_type function to allow these drivers to build when hotplug is disabled and still use the DAX use case. In the built-out case we simply return MMOP_OFFLINE as it's non-destructive. The internal function can never return -1 either, so we choose this to allow for defining the function with 'enum mmop'. Link: https://lore.kernel.org/20260712154505.3564379-5-gourry@gourry.net Signed-off-by: Gregory Price <gourry@gourry.net> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Dan Williams <djbw@kernel.org> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Cc: Alison Schofield <alison.schofield@intel.com> Cc: Danilo Krummrich <dakr@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Hannes Reinecke <hare@suse.de> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: Pankaj Gupta <pankaj.gupta@amd.com> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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| acpi | ||
| asm-generic | ||
| clocksource | ||
| crypto | ||
| cxl | ||
| drm | ||
| dt-bindings | ||
| hyperv | ||
| keys | ||
| kunit | ||
| kvm | ||
| linux | ||
| math-emu | ||
| media | ||
| memory | ||
| misc | ||
| net | ||
| pcmcia | ||
| ras | ||
| rdma | ||
| rv | ||
| scsi | ||
| soc | ||
| sound | ||
| target | ||
| trace | ||
| uapi | ||
| ufs | ||
| vdso | ||
| video | ||
| xen | ||
| Kbuild | ||