svm: improve fifo segment prealloc support

- track fifo segment free and chunk freelist memory
- improve fifo alloc. If there are enough chunks to satisfy a fifo
  allocation request but not enough free memory, allocate a multi-chunk
  fifo
- add apis to preallocate chunks and fifo headers
- more tests

Change-Id: If18dba7ab856272c9f565d36ac36365139793e0b
Signed-off-by: Florin Coras <fcoras@cisco.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/svm/ssvm.c b/src/svm/ssvm.c
index 3e45175da0e..2a6e6bf78da 100644
--- a/src/svm/ssvm.c
+++ b/src/svm/ssvm.c
@@ -352,8 +352,8 @@ ssvm_master_init_private (ssvm_private_t * ssvm)
   u32 rnd_size = 0;
   u8 *heap;
 
-  rnd_size = (ssvm->ssvm_size + (pagesize - 1)) & ~(pagesize - 1);
-  rnd_size = clib_min (rnd_size, ((u64) 1 << 32) - pagesize);
+  rnd_size = clib_max (ssvm->ssvm_size + (pagesize - 1), ssvm->ssvm_size);
+  rnd_size &= ~(pagesize - 1);
 
 #if USE_DLMALLOC == 0
   {