Commit fc560a26acce ("cpuset: replace cpuset->stack_list with
cpuset_for_each_descendant_pre()") removed the local list (q)
that was used to perform a top-down scan of all cpusets;
however, comments mentioning it were not updated.

Update comments to reflect current implementation.

Signed-off-by: Juri Lelli <[email protected]>
---
 kernel/cgroup/cpuset.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index f0decd8165e7..f0822a730879 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -725,11 +725,10 @@ static inline int nr_cpusets(void)
  * Must be called with cpuset_mutex held.
  *
  * The three key local variables below are:
- *    q  - a linked-list queue of cpuset pointers, used to implement a
- *        top-down scan of all cpusets.  This scan loads a pointer
- *        to each cpuset marked is_sched_load_balance into the
- *        array 'csa'.  For our purposes, rebuilding the schedulers
- *        sched domains, we can ignore !is_sched_load_balance cpusets.
+ *    cp - cpuset pointer, used (together with pos_css) to perform a
+ *        top-down scan of all cpusets. For our purposes, rebuilding
+ *        the schedulers sched domains, we can ignore !is_sched_load_
+ *        balance cpusets.
  *  csa  - (for CpuSet Array) Array of pointers to all the cpusets
  *        that need to be load balanced, for convenient iterative
  *        access by the subsequent code that finds the best partition,
@@ -760,7 +759,7 @@ static inline int nr_cpusets(void)
 static int generate_sched_domains(cpumask_var_t **domains,
                        struct sched_domain_attr **attributes)
 {
-       struct cpuset *cp;      /* scans q */
+       struct cpuset *cp;      /* top-down scan of cpusets */
        struct cpuset **csa;    /* array of all cpuset ptrs */
        int csn;                /* how many cpuset ptrs in csa so far */
        int i, j, k;            /* indices for partition finding loops */
-- 
2.17.2

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