Make FCO cores distribute evenly among processors

We observed FCO cores front-loading to first processor followed by
the next and so on. This change mixes the FCO cores between the
processors evenly.

Change-Id: If2bcaa699f8be355c1cd7a8ef76b55925921f290
CQ:SW404823
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/51030
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Reviewed-by: Brian E. Bakke <bbakke@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Reviewed-by: William G. Hoffa <wghoffa@us.ibm.com>

1 files changed, 10 insertions, 7 deletions

diff --git a/src/usr/hwas/common/hwas.C b/src/usr/hwas/common/hwas.C
index 0ea59b4b4..9dc33428a 100644
--- a/src/usr/hwas/common/hwas.C
+++ b/src/usr/hwas/common/hwas.C
@@ -1360,11 +1360,14 @@ errlHndl_t restrictECunits(
         //  determine if it has an EC pair or a single EC and if the remaining
         //  count indicates the given EC from that list is to stay functional.
 
-        // Cycle through the procs
-        for (uint32_t i = 0; i < procs; i++)
-        {
-            // Cycle through the EXs for this proc
-            for (uint32_t j = 0; j < NUM_EX_PER_CHIP; j++)
+        // Cycle through the first EX of each proc, then the second EX of each
+        // proc and so on as we decrement remaining ECs. We put procs as the
+        // inner loop and EXs as the outer to distribute the functional ECs
+        // evenly between procs. After we run out of ECs, we deconfigure the
+        // remaining ones.
+        for (uint32_t j = 0; j < NUM_EX_PER_CHIP; j++)
+        {
+            for (uint32_t i = 0; i < procs; i++)
             {
                 // Walk through the EC list from this EX
                 while (pEC_it[i][j] != pECList[i][j].end())
@@ -1401,8 +1404,8 @@ errlHndl_t restrictECunits(
 
                     (pEC_it[i][j])++; // next ec in this ex's list
                 } // while pEC_it[i][j] != pECList[i][j].end()
-            } // for j < NUM_EX_PER_CHIP
-        } // for i < procs
+            } // for i < procs
+        } // for j < NUM_EX_PER_CHIP
     } // for procIdx < l_ProcCount
 
     if (errl)