2 files changed, 4 insertions, 1 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index c731296e5e9..ff154e10752 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -801,7 +801,7 @@ enum cpu_idle_type {
 #define SD_POWERSAVINGS_BALANCE 0x0100  /* Balance for power savings */
 #define SD_SHARE_PKG_RESOURCES  0x0200  /* Domain members share cpu pkg resources */
 #define SD_SERIALIZE            0x0400  /* Only a single load balancing instance */
-
+#define SD_ASYM_PACKING         0x0800  /* Place busy groups earlier in the domain */
 #define SD_PREFER_SIBLING       0x1000  /* Prefer to place tasks in a sibling domain */
 
 enum powersavings_balance_level {
@@ -836,6 +836,8 @@ static inline int sd_balance_for_package_power(void)
         return SD_PREFER_SIBLING;
 }
 
+extern int __weak arch_sd_sibiling_asym_packing(void);
+
 /*
  * Optimise SD flags for power savings:
  * SD_BALANCE_NEWIDLE helps agressive task consolidation and power savings.
diff --git a/include/linux/topology.h b/include/linux/topology.h
index c44df50a05a..cf57f30d0dc 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -103,6 +103,7 @@ int arch_update_cpu_topology(void);
                                 | 1*SD_SHARE_PKG_RESOURCES              \
                                 | 0*SD_SERIALIZE                        \
                                 | 0*SD_PREFER_SIBLING                   \
+                                | arch_sd_sibiling_asym_packing()       \
                                 ,                                       \
         .last_balance           = jiffies,                              \
         .balance_interval       = 1,                                    \