If the option '--mgmt' is present, the command 'list' will list all
PMEM regions for management usage.
Signed-off-by: Haozhong Zhang <haozhong.zh...@intel.com>
---
Cc: Ian Jackson <ian.jack...@eu.citrix.com>
Cc: Wei Liu <wei.l...@citrix.com>
---
tools/misc/xen-ndctl.c | 39 +++++++++++++++++++++++++++++++++++++--
1 file changed, 37 insertions(+), 2 deletions(-)
diff --git a/tools/misc/xen-ndctl.c b/tools/misc/xen-ndctl.c
index 1289a83dbe..058f8ccaf5 100644
--- a/tools/misc/xen-ndctl.c
+++ b/tools/misc/xen-ndctl.c
@@ -57,9 +57,10 @@ static const struct xen_ndctl_cmd
{
.name = "list",
- .syntax = "[--all | --raw ]",
+ .syntax = "[--all | --raw | --mgmt]",
.help = "--all: the default option, list all PMEM regions of
following types.\n"
- "--raw: list all PMEM regions detected by Xen
hypervisor.\n",
+ "--raw: list all PMEM regions detected by Xen hypervisor.\n"
+ "--mgmt: list all PMEM regions for management usage.\n",
.handler = handle_list,
.need_xc = true,
},
@@ -162,12 +163,46 @@ static int handle_list_raw(void)
return rc;
}
+static int handle_list_mgmt(void)
+{
+ int rc;
+ unsigned int nr = 0, i;
+ xen_sysctl_nvdimm_pmem_mgmt_region_t *mgmt_list;
+
+ rc = xc_nvdimm_pmem_get_regions_nr(xch, PMEM_REGION_TYPE_MGMT, &nr);
+ if ( rc )
+ {
+ fprintf(stderr, "Cannot get the number of PMEM regions: %s.\n",
+ strerror(-rc));
+ return rc;
+ }
+
+ mgmt_list = malloc(nr * sizeof(*mgmt_list));
+ if ( !mgmt_list )
+ return -ENOMEM;
+
+ rc = xc_nvdimm_pmem_get_regions(xch, PMEM_REGION_TYPE_MGMT, mgmt_list,
&nr);
+ if ( rc )
+ goto out;
+
+ printf("Management PMEM regions:\n");
+ for ( i = 0; i < nr; i++ )
+ printf(" %u: MFN 0x%lx - 0x%lx, used 0x%lx\n",
+ i, mgmt_list[i].smfn, mgmt_list[i].emfn,
mgmt_list[i].used_mfns);
+
+ out:
+ free(mgmt_list);
+
+ return rc;
+}
+
static const struct list_handlers {
const char *option;
int (*handler)(void);
} list_hndrs[] =
{
{ "--raw", handle_list_raw },
+ { "--mgmt", handle_list_mgmt },
};
static const unsigned int nr_list_hndrs =
--
2.14.1
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