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Merge tag 'libnvdimm-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Browse Source 
Pull libnvdimm updates from Dan Williams:

 - Improve the efficiency and performance of reading nvdimm-namespace
   labels. Reduce the amount of label data read at driver load time by a
   few orders of magnitude. Reduce heavyweight call-outs to
   platform-firmware routines.

 - Handle media errors located in the 'struct page' array stored on a
   persistent memory namespace. Let the kernel clear these errors rather
   than an awkward userspace workaround.

 - Fix Address Range Scrub (ARS) completion tracking. Correct occasions
   where the kernel indicates completion of ARS before submission.

 - Fix asynchronous device registration reference counting.

 - Add support for reporting an nvdimm dirty-shutdown-count via sysfs.

 - Fix various small libnvdimm core and uapi issues.

* tag 'libnvdimm-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (21 commits)
  acpi, nfit: Further restrict userspace ARS start requests
  acpi, nfit: Fix Address Range Scrub completion tracking
  UAPI: ndctl: Remove use of PAGE_SIZE
  UAPI: ndctl: Fix g++-unsupported initialisation in headers
  tools/testing/nvdimm: Populate dirty shutdown data
  acpi, nfit: Collect shutdown status
  acpi, nfit: Introduce nfit_mem flags
  libnvdimm, label: Fix sparse warning
  nvdimm: Use namespace index data to reduce number of label reads needed
  nvdimm: Split label init out from the logic for getting config data
  nvdimm: Remove empty if statement
  nvdimm: Clarify comment in sizeof_namespace_index
  nvdimm: Sanity check labeloff
  libnvdimm, dimm: Maximize label transfer size
  libnvdimm, pmem: Fix badblocks population for 'raw' namespaces
  libnvdimm, namespace: Drop the repeat assignment for variable dev->parent
  libnvdimm, region: Fail badblocks listing for inactive regions
  libnvdimm, pfn: during init, clear errors in the metadata area
  libnvdimm: Set device node in nd_device_register
  libnvdimm: Hold reference on parent while scheduling async init
  ...
This commit is contained in:
Linus Torvalds
2018-10-25 06:31:56 -07:00
parent df132e4062 594861215c
commit 6078e07dcf
20 changed files with 563 additions and 216 deletions
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52
include/uapi/linux/ndctl.h
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@@ -128,37 +128,31 @@ enum {
static inline const char *nvdimm_bus_cmd_name(unsigned cmd)
{
static const char * const names[] = {
[ND_CMD_ARS_CAP] = "ars_cap",
[ND_CMD_ARS_START] = "ars_start",
[ND_CMD_ARS_STATUS] = "ars_status",
[ND_CMD_CLEAR_ERROR] = "clear_error",
[ND_CMD_CALL] = "cmd_call",
};
if (cmd < ARRAY_SIZE(names) && names[cmd])
return names[cmd];
return "unknown";
switch (cmd) {
case ND_CMD_ARS_CAP: return "ars_cap";
case ND_CMD_ARS_START: return "ars_start";
case ND_CMD_ARS_STATUS: return "ars_status";
case ND_CMD_CLEAR_ERROR: return "clear_error";
case ND_CMD_CALL: return "cmd_call";
default: return "unknown";
}
}
static inline const char *nvdimm_cmd_name(unsigned cmd)
{
static const char * const names[] = {
[ND_CMD_SMART] = "smart",
[ND_CMD_SMART_THRESHOLD] = "smart_thresh",
[ND_CMD_DIMM_FLAGS] = "flags",
[ND_CMD_GET_CONFIG_SIZE] = "get_size",
[ND_CMD_GET_CONFIG_DATA] = "get_data",
[ND_CMD_SET_CONFIG_DATA] = "set_data",
[ND_CMD_VENDOR_EFFECT_LOG_SIZE] = "effect_size",
[ND_CMD_VENDOR_EFFECT_LOG] = "effect_log",
[ND_CMD_VENDOR] = "vendor",
[ND_CMD_CALL] = "cmd_call",
};
if (cmd < ARRAY_SIZE(names) && names[cmd])
return names[cmd];
return "unknown";
switch (cmd) {
case ND_CMD_SMART: return "smart";
case ND_CMD_SMART_THRESHOLD: return "smart_thresh";
case ND_CMD_DIMM_FLAGS: return "flags";
case ND_CMD_GET_CONFIG_SIZE: return "get_size";
case ND_CMD_GET_CONFIG_DATA: return "get_data";
case ND_CMD_SET_CONFIG_DATA: return "set_data";
case ND_CMD_VENDOR_EFFECT_LOG_SIZE: return "effect_size";
case ND_CMD_VENDOR_EFFECT_LOG: return "effect_log";
case ND_CMD_VENDOR: return "vendor";
case ND_CMD_CALL: return "cmd_call";
default: return "unknown";
}
}
#define ND_IOCTL 'N'
@@ -208,10 +202,6 @@ enum nd_driver_flags {
ND_DRIVER_DAX_PMEM = 1 << ND_DEVICE_DAX_PMEM,
};
enum {
ND_MIN_NAMESPACE_SIZE = PAGE_SIZE,
};
enum ars_masks {
ARS_STATUS_MASK = 0x0000FFFF,
ARS_EXT_STATUS_SHIFT = 16,