Add a new daxctl-reconfigure-device command that lets us reconfigure DAX devices back and forth between 'system-ram' and 'device-dax' modes. It also includes facilities to online any newly hot-plugged memory (default), and attempt to offline memory before converting away from the system-ram mode (not default, requires a --attempt-offline option).
Currently missing from this series is a way to persistently store which devices have been 'marked' for use as system-ram. This depends on a config system overhaul in ndctl, and patches for those will follow separately and are independent of this work. Cc: Dan Williams <dan.j.willi...@intel.com> Cc: Dave Hansen <dave.han...@linux.intel.com> Cc: Pavel Tatashin <pasha.tatas...@soleen.com> Vishal Verma (8): libdaxctl: add interfaces in support of device modes libdaxctl: cache 'subsystem' in daxctl_ctx daxctl: add libdaxctl interfaces to enable/disable devices ndctl: add helpers to get/set the online state for a node daxctl: add a new reconfigure-device command Documentation/daxctl: add a man page for daxctl-reconfigure-device contrib/ndctl: fix region-id completions for daxctl contrib/ndctl: add bash-completion for daxctl-reconfigure-device Documentation/daxctl/Makefile.am | 3 +- .../daxctl/daxctl-reconfigure-device.txt | 74 +++ contrib/ndctl | 34 +- daxctl/Makefile.am | 2 + daxctl/builtin.h | 1 + daxctl/daxctl.c | 1 + daxctl/device.c | 217 ++++++++ daxctl/lib/Makefile.am | 3 +- daxctl/lib/libdaxctl-private.h | 21 + daxctl/lib/libdaxctl.c | 511 +++++++++++++++++- daxctl/lib/libdaxctl.sym | 13 + daxctl/libdaxctl.h | 15 + 12 files changed, 884 insertions(+), 11 deletions(-) create mode 100644 Documentation/daxctl/daxctl-reconfigure-device.txt create mode 100644 daxctl/device.c -- 2.20.1 _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm
