Add per-numa page allocation info to 'show memory'

Change-Id: I64e4e3d68c0f3958323f30b12a26cfaafa8bad85
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 63 insertions, 0 deletions

diff --git a/src/vppinfra/unix-formats.c b/src/vppinfra/unix-formats.c
index eceea2d25be..b3b8c899d70 100644
--- a/src/vppinfra/unix-formats.c
+++ b/src/vppinfra/unix-formats.c
@@ -57,6 +57,7 @@
 #include <math.h>
 
 #include <vppinfra/time.h>
+#include <vppinfra/linux/syscall.h>
 
 #ifdef AF_NETLINK
 #include <linux/types.h>
@@ -953,4 +954,66 @@ unformat_unix_gid (unformat_input_t * input, va_list * args)
   return 0;
 }
 
+#define MAX_NUMNODES 16
+u8 *
+format_page_map (u8 * s, va_list * args)
+{
+  uword va = va_arg (*args, uword);
+  uword size = va_arg (*args, uword);
+  uword page_size = clib_mem_get_page_size ();
+  u32 indent = format_get_indent (s);
+  uword n_pages = size / page_size;
+  uword pages_per_numa[MAX_NUMNODES] = { 0 };
+  uword pages_not_mapped = 0;
+  uword pages_unknown = 0;
+  int *status = 0;
+  void **ptr = 0;
+  int i;
+
+  s = format (s, "virtual memory start 0x%llx, size %lluk, %u pages, "
+	      "page size %uk", va, size / 1024, n_pages, page_size / 1024);
+
+  vec_validate (status, n_pages - 1);
+  vec_validate (ptr, n_pages - 1);
+
+  for (i = 0; i < n_pages; i++)
+    ptr[i] = uword_to_pointer (va + i * page_size, void *);
+
+  if (move_pages (0, n_pages, ptr, 0, status, 0) != 0)
+    {
+      s = format (s, "\n%Upage information not available (errno %u)",
+		  format_white_space, indent + 2, errno);
+      goto done;
+    }
+
+  for (i = 0; i < n_pages; i++)
+    {
+      if (status[i] >= 0 && status[i] < MAX_NUMNODES)
+	pages_per_numa[status[i]]++;
+      else if (status[i] == -EFAULT)
+	pages_not_mapped++;
+      else
+	pages_unknown++;
+    }
+
+  for (i = 0; i < MAX_NUMNODES; i++)
+    if (pages_per_numa[i])
+      s = format (s, "\n%Unuma %u: %d pages, %luk", format_white_space,
+		  indent + 2, i, pages_per_numa[i], pages_per_numa[i] *
+		  page_size / 1024);
+
+  s = format (s, "\n%Unot mapped: %u pages, %luk", format_white_space,
+	      indent + 2, pages_not_mapped, pages_not_mapped *
+	      page_size / 1024);
+
+  if (pages_unknown)
+    s = format (s, "\n%Uunknown: %u pages, %luk", format_white_space,
+		indent + 2, pages_unknown, pages_unknown * page_size / 1024);
+
+done:
+  vec_free (status);
+  vec_free (ptr);
+  return s;
+}
+
 #endif /* __KERNEL__ */