diff --git a/study/kernel/01-process/05-schedule/04-cfs/02-vruntime/README.md b/study/kernel/01-process/05-schedule/04-cfs/02-vruntime/README.md
index 946dd07..9c2fa6c 100644
--- a/study/kernel/01-process/05-schedule/04-cfs/02-vruntime/README.md
+++ b/study/kernel/01-process/05-schedule/04-cfs/02-vruntime/README.md
@@ -121,7 +121,7 @@ static inline u64 calc_delta_fair(u64 delta, struct sched_entity *se)
 
 忽略舍入和溢出检查, calc_delta_fair函数所做的就是根据下列公式计算:
 
-$$	delta =delta \times \dfrac{NICE\_0\_LOAD}{curr->se->load.weight}   ;(if curr.nice!=NICE_0_LOAD)$$
+$$	delta =delta \times \dfrac{NICE\\_0\\_LOAD}{curr->se->load.weight}   ;(if curr.nice!=NICE_0_LOAD)$$
 
 
 
@@ -130,12 +130,11 @@ $$	delta =delta \times \dfrac{NICE\_0\_LOAD}{curr->se->load.weight}   ;(if curr.
 那么`curr->vruntime += calc_delta_fair(delta_exec, curr);` 即相当于如下操作
 
 
-$a^2$
 
 
 | 条件 | 公式 |
 |:-------:|:-------:|
-| curr.nice != NICE_0_LOAD | $curr->vruntime += delta\_exec \times \dfrac{NICE\_0\_LOAD}{curr->se->load.weight}    (if )$ |
+| curr.nice != NICE_0_LOAD | $curr->vruntime += delta\\_exec \times \dfrac{NICE\\_0\\_LOAD}{curr->se->load.weight}$ |
 | curr.nice == NICE_0_LOAD | $ curr->vruntime += delta $ |
 
 在该计算中可以派上用场了, 回想一下子,　可知越重要的进程会有越高的优先级(即, 越低的nice值), 会得到更大的权重, 因此累加的虚拟运行时间会小一点,