[PATCH 5/6] xl: export 'unclaimed_pages' value from xcinfo

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

This patch provides the value of claimed pages but not yet
accounted for in a domain. This value is initially set
by the XENMEM_claim_pages hypercall and as the guest is being
created its values decreases to zero.

With this patch it is possible to see the value of this
field.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
 tools/libxl/libxl.c         | 1 +
 tools/libxl/libxl_types.idl | 1 +
 tools/libxl/xl_sxp.c        | 1 +
 3 files changed, 3 insertions(+)

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index 8c6e1a1..9c6968f 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -528,6 +528,7 @@ static void xcinfo2xlinfo(const xc_domaininfo_t *xcinfo,
     else
         xlinfo->shutdown_reason  = ~0;
 
+    xlinfo->unclaimed_memkb = PAGE_TO_MEMKB(xcinfo->unclaimed_pages);
     xlinfo->current_memkb = PAGE_TO_MEMKB(xcinfo->tot_pages);
     xlinfo->shared_memkb = PAGE_TO_MEMKB(xcinfo->shr_pages);
     xlinfo->paged_memkb = PAGE_TO_MEMKB(xcinfo->paged_pages);
diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
index e73669d..b479c60 100644
--- a/tools/libxl/libxl_types.idl
+++ b/tools/libxl/libxl_types.idl
@@ -202,6 +202,7 @@ libxl_dominfo = Struct("dominfo",[
     # Otherwise set to a value guaranteed not to clash with any valid
     # LIBXL_SHUTDOWN_REASON_* constant.
     ("shutdown_reason", libxl_shutdown_reason),
+    ("unclaimed_memkb",  MemKB),
     ("current_memkb",   MemKB),
     ("shared_memkb", MemKB),
     ("paged_memkb", MemKB),
diff --git a/tools/libxl/xl_sxp.c b/tools/libxl/xl_sxp.c
index a16a025..1002476 100644
--- a/tools/libxl/xl_sxp.c
+++ b/tools/libxl/xl_sxp.c
@@ -72,6 +72,7 @@ void printf_info_sexp(int domid, libxl_domain_config *d_config)
     printf("\t(build_info)\n");
     printf("\t(max_vcpus %d)\n", b_info->max_vcpus);
     printf("\t(tsc_mode %s)\n", libxl_tsc_mode_to_string(b_info->tsc_mode));
+    printf("\t(unclaimed_memkb %"PRId64")\n", info.unclaimed_memkb);
     printf("\t(max_memkb %"PRId64")\n", b_info->max_memkb);
     printf("\t(target_memkb %"PRId64")\n", b_info->target_memkb);
     printf("\t(nomigrate %s)\n",
-- 
1.8.0.2