LU-14139 statahead: add total hit/miss count stats

[fs/lustre-release.git] / lustre / llite / lproc_llite.c

diff --git a/lustre/llite/lproc_llite.c b/lustre/llite/lproc_llite.c
index 31ed585..50fd29d 100644 (file)
--- a/lustre/llite/lproc_llite.c
+++ b/lustre/llite/lproc_llite.c
@@ -833,14 +833,34 @@ static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
 
        seq_printf(m, "statahead total: %u\n"
                      "statahead wrong: %u\n"
-                     "agl total: %u\n",
+                     "agl total: %u\n"
+                     "hit_total: %u\n"
+                     "miss_total: %u\n",
                   atomic_read(&sbi->ll_sa_total),
                   atomic_read(&sbi->ll_sa_wrong),
-                  atomic_read(&sbi->ll_agl_total));
+                  atomic_read(&sbi->ll_agl_total),
+                  atomic_read(&sbi->ll_sa_hit_total),
+                  atomic_read(&sbi->ll_sa_miss_total));
        return 0;
 }
 
-LDEBUGFS_SEQ_FOPS_RO(ll_statahead_stats);
+static ssize_t ll_statahead_stats_seq_write(struct file *file,
+                                           const char __user *buffer,
+                                           size_t count, loff_t *off)
+{
+       struct seq_file *m = file->private_data;
+       struct super_block *sb = m->private;
+       struct ll_sb_info *sbi = ll_s2sbi(sb);
+
+       atomic_set(&sbi->ll_sa_total, 0);
+       atomic_set(&sbi->ll_sa_wrong, 0);
+       atomic_set(&sbi->ll_agl_total, 0);
+       atomic_set(&sbi->ll_sa_hit_total, 0);
+       atomic_set(&sbi->ll_sa_miss_total, 0);
+
+       return count;
+}
+LDEBUGFS_SEQ_FOPS(ll_statahead_stats);
 
 static ssize_t lazystatfs_show(struct kobject *kobj,
                               struct attribute *attr,