David Hildenbrand
3a7452c5a7
docs/core-api: memory-hotplug: add some details about locking internals
...
Let's document the magic a bit, especially why device_hotplug_lock is
required when adding/removing memory and how it all play together with
requests to online/offline memory from user space.
[ rppt: moved the text to Documentation/core-api/memory-hotplug.rst ]
Link: http://lkml.kernel.org/r/20180925091457.28651-7-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com >
Reviewed-by: Pavel Tatashin <pavel.tatashin@microsoft.com >
Reviewed-by: Rashmica Gupta <rashmica.g@gmail.com >
Cc: Jonathan Corbet <corbet@lwn.net >
Cc: Michal Hocko <mhocko@suse.com >
Cc: Balbir Singh <bsingharora@gmail.com >
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org >
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com >
Cc: Dan Williams <dan.j.williams@intel.com >
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
Cc: Haiyang Zhang <haiyangz@microsoft.com >
Cc: Heiko Carstens <heiko.carstens@de.ibm.com >
Cc: John Allen <jallen@linux.vnet.ibm.com >
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com >
Cc: Juergen Gross <jgross@suse.com >
Cc: Kate Stewart <kstewart@linuxfoundation.org >
Cc: "K. Y. Srinivasan" <kys@microsoft.com >
Cc: Len Brown <lenb@kernel.org >
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com >
Cc: Mathieu Malaterre <malat@debian.org >
Cc: Michael Ellerman <mpe@ellerman.id.au >
Cc: Michael Neuling <mikey@neuling.org >
Cc: Nathan Fontenot <nfont@linux.vnet.ibm.com >
Cc: Oscar Salvador <osalvador@suse.de >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Philippe Ombredanne <pombredanne@nexb.com >
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com >
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net >
Cc: Stephen Hemminger <sthemmin@microsoft.com >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Vlastimil Babka <vbabka@suse.cz >
Cc: YASUAKI ISHIMATSU <yasu.isimatu@gmail.com >
Signed-off-by: Andrew Morton <akpm@linux-foundation.org >
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com >
Signed-off-by: Jonathan Corbet <corbet@lwn.net >
2018-10-12 11:14:19 -06:00
