lkml.org 
[lkml]   [2023]   [May]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] sched/deadline: simplify dl_bw_cpus() using cpumask_weight_and()
Date
cpumask_weight_and() can be used to count of bits both in rd->span and
cpu_active_mask. No functional change intended.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
kernel/sched/deadline.c | 11 +----------
1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index 166c3e6eae61..fe983ed7bb12 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -110,20 +110,11 @@ static inline struct dl_bw *dl_bw_of(int i)
static inline int dl_bw_cpus(int i)
{
struct root_domain *rd = cpu_rq(i)->rd;
- int cpus;

RCU_LOCKDEP_WARN(!rcu_read_lock_sched_held(),
"sched RCU must be held");

- if (cpumask_subset(rd->span, cpu_active_mask))
- return cpumask_weight(rd->span);
-
- cpus = 0;
-
- for_each_cpu_and(i, rd->span, cpu_active_mask)
- cpus++;
-
- return cpus;
+ return cpumask_weight_and(rd->span, cpu_active_mask);
}

static inline unsigned long __dl_bw_capacity(const struct cpumask *mask)
--
2.27.0
\
 
 \ /
  Last update: 2023-05-22 06:05    [W:0.944 / U:0.752 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site