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LU-17705 ptlrpc: replace synchronize_rcu() with rcu_barrier()
[fs/lustre-release.git] / lustre / osc / lproc_osc.c
index 3bd71dd..0bce55b 100644 (file)
@@ -27,7 +27,6 @@
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
  */
 #define DEBUG_SUBSYSTEM S_CLASS
 
@@ -60,6 +59,7 @@ static ssize_t active_store(struct kobject *kobj, struct attribute *attr,
 {
        struct obd_device *obd = container_of(kobj, struct obd_device,
                                              obd_kset.kobj);
+       struct obd_import *imp, *imp0;
        bool val;
        int rc;
 
@@ -67,14 +67,19 @@ static ssize_t active_store(struct kobject *kobj, struct attribute *attr,
        if (rc)
                return rc;
 
+       with_imp_locked(obd, imp0, rc)
+               imp = class_import_get(imp0);
+       if (rc)
+               return rc;
        /* opposite senses */
-       if (obd->u.cli.cl_import->imp_deactive == val)
-               rc = ptlrpc_set_import_active(obd->u.cli.cl_import, val);
+       if (imp->imp_deactive == val)
+               rc = ptlrpc_set_import_active(imp, val);
        else
                CDEBUG(D_CONFIG, "activate %u: ignoring repeat request\n",
                       (unsigned int)val);
+       class_import_put(imp);
 
-       return count;
+       return rc ?: count;
 }
 LUSTRE_RW_ATTR(active);
 
@@ -358,6 +363,30 @@ static ssize_t grant_shrink_interval_store(struct kobject *kobj,
 }
 LUSTRE_RW_ATTR(grant_shrink_interval);
 
+static ssize_t enable_page_cache_shrink_show(struct kobject *kobj,
+                                            struct attribute *attr,
+                                            char *buf)
+{
+       return scnprintf(buf, PAGE_SIZE, "%d\n", osc_page_cache_shrink_enabled);
+}
+
+static ssize_t enable_page_cache_shrink_store(struct kobject *kobj,
+                                             struct attribute *attr,
+                                             const char *buffer,
+                                             size_t count)
+{
+       bool val;
+       int rc;
+
+       rc = kstrtobool(buffer, &val);
+       if (rc)
+               return rc;
+
+       osc_page_cache_shrink_enabled = val;
+       return count;
+}
+LUSTRE_RW_ATTR(enable_page_cache_shrink);
+
 static ssize_t checksums_show(struct kobject *kobj,
                              struct attribute *attr,
                              char *buf)
@@ -435,13 +464,13 @@ static ssize_t osc_checksum_type_seq_write(struct file *file,
                kernbuf[count] = '\0';
 
        for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
-               if (strcmp(kernbuf, cksum_name[i]) == 0) {
+               if (strcasecmp(kernbuf, cksum_name[i]) == 0) {
                        obd->u.cli.cl_preferred_cksum_type = BIT(i);
                        if (obd->u.cli.cl_supp_cksum_types & BIT(i)) {
                                obd->u.cli.cl_cksum_type = BIT(i);
                                rc = count;
                        } else {
-                               rc = -ENOTSUPP;
+                               rc = -EOPNOTSUPP;
                        }
                        break;
                }
@@ -510,70 +539,6 @@ static ssize_t checksum_dump_store(struct kobject *kobj,
 }
 LUSTRE_RW_ATTR(checksum_dump);
 
-static ssize_t contention_seconds_show(struct kobject *kobj,
-                                      struct attribute *attr,
-                                      char *buf)
-{
-       struct obd_device *obd = container_of(kobj, struct obd_device,
-                                             obd_kset.kobj);
-       struct osc_device *od = obd2osc_dev(obd);
-
-       return sprintf(buf, "%lld\n", od->od_contention_time);
-}
-
-static ssize_t contention_seconds_store(struct kobject *kobj,
-                                       struct attribute *attr,
-                                       const char *buffer,
-                                       size_t count)
-{
-       struct obd_device *obd = container_of(kobj, struct obd_device,
-                                             obd_kset.kobj);
-       struct osc_device *od = obd2osc_dev(obd);
-       unsigned int val;
-       int rc;
-
-       rc = kstrtouint(buffer, 0, &val);
-       if (rc)
-               return rc;
-
-       od->od_contention_time = val;
-
-       return count;
-}
-LUSTRE_RW_ATTR(contention_seconds);
-
-static ssize_t lockless_truncate_show(struct kobject *kobj,
-                                     struct attribute *attr,
-                                     char *buf)
-{
-       struct obd_device *obd = container_of(kobj, struct obd_device,
-                                             obd_kset.kobj);
-       struct osc_device *od = obd2osc_dev(obd);
-
-       return sprintf(buf, "%u\n", od->od_lockless_truncate);
-}
-
-static ssize_t lockless_truncate_store(struct kobject *kobj,
-                                      struct attribute *attr,
-                                      const char *buffer,
-                                      size_t count)
-{
-       struct obd_device *obd = container_of(kobj, struct obd_device,
-                                             obd_kset.kobj);
-       struct osc_device *od = obd2osc_dev(obd);
-       bool val;
-       int rc;
-
-       rc = kstrtobool(buffer, &val);
-       if (rc)
-               return rc;
-
-       od->od_lockless_truncate = val;
-
-       return count;
-}
-LUSTRE_RW_ATTR(lockless_truncate);
-
 static ssize_t destroys_in_flight_show(struct kobject *kobj,
                                       struct attribute *attr,
                                       char *buf)
@@ -765,18 +730,15 @@ struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 
 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 {
-       struct timespec64 now;
        struct obd_device *obd = seq->private;
        struct client_obd *cli = &obd->u.cli;
        unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
        int i;
 
-       ktime_get_real_ts64(&now);
-
        spin_lock(&cli->cl_loi_list_lock);
 
-       seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
-                  (s64)now.tv_sec, now.tv_nsec);
+       lprocfs_stats_header(seq, ktime_get_real(), cli->cl_stats_init, 25,
+                            ":", true, "");
        seq_printf(seq, "read RPCs in flight:  %d\n",
                   cli->cl_r_in_flight);
        seq_printf(seq, "write RPCs in flight: %d\n",
@@ -862,7 +824,7 @@ static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 
 static ssize_t osc_rpc_stats_seq_write(struct file *file,
                                       const char __user *buf,
-                                       size_t len, loff_t *off)
+                                      size_t len, loff_t *off)
 {
        struct seq_file *seq = file->private_data;
        struct obd_device *obd = seq->private;
@@ -874,6 +836,7 @@ static ssize_t osc_rpc_stats_seq_write(struct file *file,
        lprocfs_oh_clear(&cli->cl_write_page_hist);
        lprocfs_oh_clear(&cli->cl_read_offset_hist);
        lprocfs_oh_clear(&cli->cl_write_offset_hist);
+       cli->cl_stats_init = ktime_get_real();
 
        return len;
 }
@@ -881,20 +844,15 @@ LPROC_SEQ_FOPS(osc_rpc_stats);
 
 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 {
-       struct timespec64 now;
        struct obd_device *obd = seq->private;
-       struct osc_stats *stats = &obd2osc_dev(obd)->od_stats;
+       struct osc_stats *stats = &obd2osc_dev(obd)->osc_stats;
 
-       ktime_get_real_ts64(&now);
-
-       seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
-                  (s64)now.tv_sec, now.tv_nsec);
+       lprocfs_stats_header(seq, ktime_get_real(), stats->os_init, 25, ":",
+                            true, "");
        seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
                   stats->os_lockless_writes);
        seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
                   stats->os_lockless_reads);
-       seq_printf(seq, "lockless_truncate\t\t%llu\n",
-                  stats->os_lockless_truncates);
        return 0;
 }
 
@@ -904,15 +862,17 @@ static ssize_t osc_stats_seq_write(struct file *file,
 {
        struct seq_file *seq = file->private_data;
        struct obd_device *obd = seq->private;
-       struct osc_stats *stats = &obd2osc_dev(obd)->od_stats;
+       struct osc_stats *stats = &obd2osc_dev(obd)->osc_stats;
 
        memset(stats, 0, sizeof(*stats));
+       stats->os_init = ktime_get_real();
+
        return len;
 }
 
 LPROC_SEQ_FOPS(osc_stats);
 
-int lprocfs_osc_attach_seqstat(struct obd_device *obd)
+static int lprocfs_osc_attach_seqstat(struct obd_device *obd)
 {
        int rc;
 
@@ -926,17 +886,21 @@ int lprocfs_osc_attach_seqstat(struct obd_device *obd)
 }
 #endif /* CONFIG_PROC_FS */
 
+LUSTRE_OBD_UINT_PARAM_ATTR(at_min);
+LUSTRE_OBD_UINT_PARAM_ATTR(at_max);
+LUSTRE_OBD_UINT_PARAM_ATTR(at_history);
+LUSTRE_OBD_UINT_PARAM_ATTR(ldlm_enqueue_min);
+
 static struct attribute *osc_attrs[] = {
        &lustre_attr_active.attr,
+       &lustre_attr_enable_page_cache_shrink.attr,
        &lustre_attr_checksums.attr,
        &lustre_attr_checksum_dump.attr,
-       &lustre_attr_contention_seconds.attr,
        &lustre_attr_cur_dirty_bytes.attr,
        &lustre_attr_cur_lost_grant_bytes.attr,
        &lustre_attr_cur_dirty_grant_bytes.attr,
        &lustre_attr_destroys_in_flight.attr,
        &lustre_attr_grant_shrink_interval.attr,
-       &lustre_attr_lockless_truncate.attr,
        &lustre_attr_max_dirty_mb.attr,
        &lustre_attr_max_rpcs_in_flight.attr,
        &lustre_attr_short_io_bytes.attr,
@@ -947,15 +911,21 @@ static struct attribute *osc_attrs[] = {
        &lustre_attr_idle_timeout.attr,
        &lustre_attr_idle_connect.attr,
        &lustre_attr_grant_shrink.attr,
+       &lustre_attr_at_max.attr,
+       &lustre_attr_at_min.attr,
+       &lustre_attr_at_history.attr,
+       &lustre_attr_ldlm_enqueue_min.attr,
        NULL,
 };
 
+KOBJ_ATTRIBUTE_GROUPS(osc); /* creates osc_groups */
+
 int osc_tunables_init(struct obd_device *obd)
 {
        int rc;
 
        obd->obd_vars = lprocfs_osc_obd_vars;
-       obd->obd_ktype.default_attrs = osc_attrs;
+       obd->obd_ktype.default_groups = KOBJ_ATTR_GROUPS(osc);
        rc = lprocfs_obd_setup(obd, false);
        if (rc)
                return rc;