The following commit has been merged into the sched/core branch of tip:
Commit-ID: fa427e8e53d8db15090af7e952a55870dc2a453f
Gitweb: https://git.kernel.org/tip/fa427e8e53d8db15090af7e952a55870dc2a453f
Author: Qais Yousef <qyousef@xxxxxxxxxxx>
AuthorDate: Sun, 24 Mar 2024 00:45:51
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Mon, 25 Mar 2024 12:09:56 +01:00
sched/topology: Remove root_domain::max_cpu_capacity
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@xxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Reviewed-by: Vincent Guittot <vincent.guittot@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240324004552.999936-4-qyousef@xxxxxxxxxxx
---
kernel/sched/sched.h | 2 --
kernel/sched/topology.c | 13 ++-----------
2 files changed, 2 insertions(+), 13 deletions(-)
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index f77c00d..4f9e952 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -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.
diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
index 44ed3d0..63aecd2 100644
--- a/kernel/sched/topology.c
+++ b/kernel/sched/topology.c
@@ -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:
|