[jsarha:topic/cros-sof-v4.14-rebase 1457/9999] kernel/sched/fair.c:7171 find_energy_efficient_cpu() warn: inconsistent indenting
From: kernel test robot
Date: Thu Sep 08 2022 - 09:24:21 EST
tree: https://github.com/jsarha/linux topic/cros-sof-v4.14-rebase
head: 18a233f3f676a98dde00947535d99ab1a54da340
commit: e56a97123c10e6d5ca2ce9a0f1329f02f79f2319 [1457/9999] ANDROID: Add find_best_target to minimise energy calculation overhead
config: i386-randconfig-m021 (https://download.01.org/0day-ci/archive/20220908/202209082104.85MdOYy3-lkp@xxxxxxxxx/config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>
smatch warnings:
kernel/sched/fair.c:7171 find_energy_efficient_cpu() warn: inconsistent indenting
vim +7171 kernel/sched/fair.c
7092
7093 /*
7094 * Needs to be called inside rcu_read_lock critical section.
7095 * sd is a pointer to the sched domain we wish to use for an
7096 * energy-aware placement option.
7097 */
7098 static int find_energy_efficient_cpu(struct sched_domain *sd,
7099 struct task_struct *p,
7100 int cpu, int prev_cpu,
7101 int sync)
7102 {
7103 int use_fbt = sched_feat(FIND_BEST_TARGET);
7104 int cpu_iter, eas_cpu_idx = EAS_CPU_NXT;
7105 int energy_cpu = prev_cpu;
7106 struct energy_env *eenv;
7107
7108 if (sysctl_sched_sync_hint_enable && sync) {
7109 if (cpumask_test_cpu(cpu, &p->cpus_allowed)) {
7110 return cpu;
7111 }
7112 }
7113
7114 /* take ownership of our per-cpu data structure */
7115 eenv = get_eenv(p, prev_cpu);
7116 if (eenv->max_cpu_count < 2)
7117 return energy_cpu;
7118
7119 if(!use_fbt) {
7120 /*
7121 * using this function outside wakeup balance will not supply
7122 * an sd ptr. Instead, fetch the highest level with energy data.
7123 */
7124 if (!sd)
7125 sd = rcu_dereference(per_cpu(sd_ea, prev_cpu));
7126
7127 for_each_cpu_and(cpu_iter, &p->cpus_allowed, sched_domain_span(sd)) {
7128 unsigned long spare;
7129
7130 /* prev_cpu already in list */
7131 if (cpu_iter == prev_cpu)
7132 continue;
7133
7134 spare = capacity_spare_wake(cpu_iter, p);
7135
7136 if (spare * 1024 < capacity_margin * task_util(p))
7137 continue;
7138
7139 /* Add CPU candidate */
7140 eenv->cpu[eas_cpu_idx++].cpu_id = cpu_iter;
7141 eenv->max_cpu_count = eas_cpu_idx;
7142
7143 /* stop adding CPUs if we have no space left */
7144 if (eas_cpu_idx >= eenv->eenv_cpu_count)
7145 break;
7146 }
7147 } else {
7148 int boosted = (schedtune_task_boost(p) > 0);
7149 int prefer_idle;
7150
7151 /*
7152 * give compiler a hint that if sched_features
7153 * cannot be changed, it is safe to optimise out
7154 * all if(prefer_idle) blocks.
7155 */
7156 prefer_idle = sched_feat(EAS_PREFER_IDLE) ?
7157 (schedtune_prefer_idle(p) > 0) : 0;
7158
7159 eenv->max_cpu_count = EAS_CPU_BKP+1;
7160
7161 /* Find a cpu with sufficient capacity */
7162 eenv->cpu[EAS_CPU_NXT].cpu_id = find_best_target(p,
7163 &eenv->cpu[EAS_CPU_BKP].cpu_id,
7164 boosted, prefer_idle);
7165
7166 /* take note if no backup was found */
7167 if (eenv->cpu[EAS_CPU_BKP].cpu_id < 0)
7168 eenv->max_cpu_count = EAS_CPU_BKP;
7169
7170 /* take note if no target was found */
> 7171 if (eenv->cpu[EAS_CPU_NXT].cpu_id < 0)
7172 eenv->max_cpu_count = EAS_CPU_NXT;
7173 }
7174
7175 if (eenv->max_cpu_count == EAS_CPU_NXT) {
7176 /*
7177 * we did not find any energy-awareness
7178 * candidates beyond prev_cpu, so we will
7179 * fall-back to the regular slow-path.
7180 */
7181 return energy_cpu;
7182 }
7183
7184 /* find most energy-efficient CPU */
7185 eas_cpu_idx = select_energy_cpu_idx(eenv);
7186 energy_cpu = eenv->cpu[eas_cpu_idx].cpu_id;
7187
7188 return energy_cpu;
7189 }
7190
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