diff options
Diffstat (limited to 'kernel/sched/debug.c')
| -rw-r--r-- | kernel/sched/debug.c | 74 |
1 files changed, 70 insertions, 4 deletions
diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index 4b49cc2af5c4..2093b9086e34 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -169,15 +169,81 @@ static const struct file_operations sched_feat_fops = { .release = single_release, }; +#ifdef CONFIG_SMP + +static ssize_t sched_scaling_write(struct file *filp, const char __user *ubuf, + size_t cnt, loff_t *ppos) +{ + char buf[16]; + + if (cnt > 15) + cnt = 15; + + if (copy_from_user(&buf, ubuf, cnt)) + return -EFAULT; + + if (kstrtouint(buf, 10, &sysctl_sched_tunable_scaling)) + return -EINVAL; + + if (sched_update_scaling()) + return -EINVAL; + + *ppos += cnt; + return cnt; +} + +static int sched_scaling_show(struct seq_file *m, void *v) +{ + seq_printf(m, "%d\n", sysctl_sched_tunable_scaling); + return 0; +} + +static int sched_scaling_open(struct inode *inode, struct file *filp) +{ + return single_open(filp, sched_scaling_show, NULL); +} + +static const struct file_operations sched_scaling_fops = { + .open = sched_scaling_open, + .write = sched_scaling_write, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +#endif /* SMP */ + __read_mostly bool sched_debug_enabled; +struct dentry *debugfs_sched; + static __init int sched_init_debug(void) { - debugfs_create_file("sched_features", 0644, NULL, NULL, - &sched_feat_fops); + struct dentry __maybe_unused *numa; - debugfs_create_bool("sched_debug", 0644, NULL, - &sched_debug_enabled); + debugfs_sched = debugfs_create_dir("sched", NULL); + + debugfs_create_file("features", 0644, debugfs_sched, NULL, &sched_feat_fops); + debugfs_create_bool("debug_enabled", 0644, debugfs_sched, &sched_debug_enabled); + + debugfs_create_u32("latency_ns", 0644, debugfs_sched, &sysctl_sched_latency); + debugfs_create_u32("min_granularity_ns", 0644, debugfs_sched, &sysctl_sched_min_granularity); + debugfs_create_u32("wakeup_granularity_ns", 0644, debugfs_sched, &sysctl_sched_wakeup_granularity); + +#ifdef CONFIG_SMP + debugfs_create_file("tunable_scaling", 0644, debugfs_sched, NULL, &sched_scaling_fops); + debugfs_create_u32("migration_cost_ns", 0644, debugfs_sched, &sysctl_sched_migration_cost); + debugfs_create_u32("nr_migrate", 0644, debugfs_sched, &sysctl_sched_nr_migrate); +#endif + +#ifdef CONFIG_NUMA_BALANCING + numa = debugfs_create_dir("numa_balancing", debugfs_sched); + + debugfs_create_u32("scan_delay_ms", 0644, numa, &sysctl_numa_balancing_scan_delay); + debugfs_create_u32("scan_period_min_ms", 0644, numa, &sysctl_numa_balancing_scan_period_min); + debugfs_create_u32("scan_period_max_ms", 0644, numa, &sysctl_numa_balancing_scan_period_max); + debugfs_create_u32("scan_size_mb", 0644, numa, &sysctl_numa_balancing_scan_size); +#endif return 0; } |