From: Dave Barach <dave@barachs.net>
Date: Tue, 1 Jan 2019 14:45:08 +0000 (-0500)
Subject: Default huge page size to the regular page size
X-Git-Tag: v19.04-rc0~63
X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=commitdiff_plain;h=036343b8b15389df52db12ff62da0133a8f030fd

Default huge page size to the regular page size

With this simple tweak, vpp is OK for "make test" or non-dpdk driver
operation over a kernel which doesn't support hugepages at all.

Tested on a Raspberry-pi 3B+ running the Ubuntu 18.04 64-bit server
beta image. It's amazing that such a minimal system will not only
self-compile vpp, but also run the unit tests. It's slow, but what do
you expect for that amount of money?

Change-Id: I7f080f871c828cc4b44be13809495278fadbd717
Signed-off-by: Dave Barach <dave@barachs.net>
---

diff --git a/src/vppinfra/linux/mem.c b/src/vppinfra/linux/mem.c
index 8edae74f9cd..407e923fb78 100644
--- a/src/vppinfra/linux/mem.c
+++ b/src/vppinfra/linux/mem.c
@@ -63,6 +63,12 @@ clib_mem_get_default_hugepage_size (void)
   if (size)
     goto done;
 
+  /*
+   * If the kernel doesn't support hugepages, /proc/meminfo won't
+   * say anything about it. Use the regular page size as a default.
+   */
+  size = clib_mem_get_page_size () / 1024;
+
   if ((fd = open ("/proc/meminfo", 0)) == -1)
     return 0;