reactivate fork balancing.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
        .forkexec_idx           = 0,                    \
        .flags                  = SD_LOAD_BALANCE       \
                                | SD_BALANCE_NEWIDLE    \
+                               | SD_BALANCE_FORK       \
                                | SD_BALANCE_EXEC       \
                                | SD_WAKE_AFFINE        \
                                | SD_WAKE_IDLE          \
        .forkexec_idx           = 1,                    \
        .flags                  = SD_LOAD_BALANCE       \
                                | SD_BALANCE_NEWIDLE    \
+                               | SD_BALANCE_FORK       \
                                | SD_BALANCE_EXEC       \
                                | SD_WAKE_AFFINE        \
                                | SD_WAKE_IDLE          \
        .forkexec_idx           = 1,                    \
        .flags                  = SD_LOAD_BALANCE       \
                                | SD_BALANCE_NEWIDLE    \
+                               | SD_BALANCE_FORK       \
                                | SD_BALANCE_EXEC       \
                                | SD_WAKE_AFFINE        \
                                | BALANCE_FOR_PKG_POWER,\