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| author | Thomas Gleixner <tglx@linutronix.de> | 2019-11-04 11:32:04 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-11-04 11:32:04 +0100 |
| commit | ca8888d7ae6fa18454c9e4f192c56bc6c8ca9b33 (patch) | |
| tree | c2b86b162f8fc2adf8a98f7e074500bee155d603 /kernel/sched/topology.c | |
| parent | db616173d787395787ecc93eef075fa975227b10 (diff) | |
| parent | a99d8080aaf358d5d23581244e5da23b35e340b9 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
to pick up the KVM fix which is required for the NX series.
Diffstat (limited to 'kernel/sched/topology.c')
| -rw-r--r-- | kernel/sched/topology.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index b5667a273bf6..49b835f1305f 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -1948,7 +1948,7 @@ next_level: static int build_sched_domains(const struct cpumask *cpu_map, struct sched_domain_attr *attr) { - enum s_alloc alloc_state; + enum s_alloc alloc_state = sa_none; struct sched_domain *sd; struct s_data d; struct rq *rq = NULL; @@ -1956,6 +1956,9 @@ build_sched_domains(const struct cpumask *cpu_map, struct sched_domain_attr *att struct sched_domain_topology_level *tl_asym; bool has_asym = false; + if (WARN_ON(cpumask_empty(cpu_map))) + goto error; + alloc_state = __visit_domain_allocation_hell(&d, cpu_map); if (alloc_state != sa_rootdomain) goto error; @@ -2026,7 +2029,7 @@ build_sched_domains(const struct cpumask *cpu_map, struct sched_domain_attr *att rcu_read_unlock(); if (has_asym) - static_branch_enable_cpuslocked(&sched_asym_cpucapacity); + static_branch_inc_cpuslocked(&sched_asym_cpucapacity); if (rq && sched_debug_enabled) { pr_info("root domain span: %*pbl (max cpu_capacity = %lu)\n", @@ -2121,8 +2124,12 @@ int sched_init_domains(const struct cpumask *cpu_map) */ static void detach_destroy_domains(const struct cpumask *cpu_map) { + unsigned int cpu = cpumask_any(cpu_map); int i; + if (rcu_access_pointer(per_cpu(sd_asym_cpucapacity, cpu))) + static_branch_dec_cpuslocked(&sched_asym_cpucapacity); + rcu_read_lock(); for_each_cpu(i, cpu_map) cpu_attach_domain(NULL, &def_root_domain, i); |