Workaround for fapiMalloc fragmentation issue

Added a macro that returns the next highest power of 2 number of pages
for a given buffer.  Implemented fapiPlatMalloc() so that it calls the macro
for buffers larger than 1 page size. This can prevent excessive
fragmentation when allocating very large buffers.

CQ:SW317751
Change-Id: I8eaef95ba4381026377a1eab0fe620b2954c8230
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/20255
Tested-by: Jenkins Server
Tested-by: Jenkins OP Build CI
Tested-by: Jenkins OP HW
Tested-by: FSP CI Jenkins
Reviewed-by: William H. Schwartz <whs@us.ibm.com>
Reviewed-by: Michael Baiocchi <baiocchi@us.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>

2 files changed, 15 insertions, 2 deletions

diff --git a/src/usr/hwpf/hwp/mvpd_accessors/mvpdRingFuncs.C b/src/usr/hwpf/hwp/mvpd_accessors/mvpdRingFuncs.C
index e54b0f602..3a532a1dc 100644
--- a/src/usr/hwpf/hwp/mvpd_accessors/mvpdRingFuncs.C
+++ b/src/usr/hwpf/hwp/mvpd_accessors/mvpdRingFuncs.C
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2012,2014                        */
+/* Contributors Listed Below - COPYRIGHT 2012,2015                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
diff --git a/src/usr/hwpf/plat/fapiPlatUtil.C b/src/usr/hwpf/plat/fapiPlatUtil.C
index 64df4d33a..d03b6705b 100644
--- a/src/usr/hwpf/plat/fapiPlatUtil.C
+++ b/src/usr/hwpf/plat/fapiPlatUtil.C
@@ -40,7 +40,8 @@
 #include <initservice/initsvcbreakpoint.H>
 #include <errl/errlentry.H>
 #include <initservice/initserviceif.H>
-
+#include <util/align.H>
+#include <fapiPlatUtil.H>
 
 #ifdef __HOSTBOOT_RUNTIME
 #include <runtime/interface.h>
@@ -325,3 +326,15 @@ fapi::ReturnCode fapiSpecialWakeup(const fapi::Target & i_target,
 }
 
 }
+
+//******************************************************************************
+// fapiPlatMalloc
+//******************************************************************************
+void* fapiPlatMalloc(size_t s)
+{
+    if (s > PAGE_SIZE)
+    {
+        s = ALIGN_TO_NEXT_POWER_OF_TWO_PAGES(s);
+    }
+    return malloc(s);
+}