system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-07-22 11:10:46 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

sched/topology: Remove root_domain::max_cpu_capacity

Browse source 
The value is no longer used as we now keep track of max_allowed_capacity
for each task instead.

Signed-off-by: Qais Yousef <qyousef@layalina.io>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lore.kernel.org/r/20240324004552.999936-4-qyousef@layalina.io
This commit is contained in:
Qais Yousef 2024-03-24 00:45:51 +00:00 committed by Ingo Molnar
parent 22d5607400
commit fa427e8e53
2 changed files with 2 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
kernel/sched/sched.h
View file

@ -917,8 +917,6 @@ struct root_domain {
cpumask_var_t rto_mask;
struct cpupri cpupri;
unsigned long max_cpu_capacity;
/*
* NULL-terminated list of performance domains intersecting with the
* CPUs of the rd. Protected by RCU.

13
kernel/sched/topology.c
View file

@ -2514,16 +2514,9 @@ build_sched_domains(const struct cpumask *cpu_map, struct sched_domain_attr *att
/* Attach the domains */
rcu_read_lock();
for_each_cpu(i, cpu_map) {
unsigned long capacity;
rq = cpu_rq(i);
sd = *per_cpu_ptr(d.sd, i);
capacity = arch_scale_cpu_capacity(i);
/* Use READ_ONCE()/WRITE_ONCE() to avoid load/store tearing: */
if (capacity > READ_ONCE(d.rd->max_cpu_capacity))
WRITE_ONCE(d.rd->max_cpu_capacity, capacity);
cpu_attach_domain(sd, d.rd, i);
if (lowest_flag_domain(i, SD_CLUSTER))
@ -2537,10 +2530,8 @@ build_sched_domains(const struct cpumask *cpu_map, struct sched_domain_attr *att
if (has_cluster)
static_branch_inc_cpuslocked(&sched_cluster_active);
if (rq && sched_debug_verbose) {
pr_info("root domain span: %*pbl (max cpu_capacity = %lu)\n",
cpumask_pr_args(cpu_map), rq->rd->max_cpu_capacity);
}
if (rq && sched_debug_verbose)
pr_info("root domain span: %*pbl\n", cpumask_pr_args(cpu_map));
ret = 0;
error: