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-rw-r--r--net/ceph/debugfs.c268
1 files changed, 268 insertions, 0 deletions
diff --git a/net/ceph/debugfs.c b/net/ceph/debugfs.c
new file mode 100644
index 0000000..33d0499
--- /dev/null
+++ b/net/ceph/debugfs.c
@@ -0,0 +1,268 @@
+#include <linux/ceph/ceph_debug.h>
+
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/ctype.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
+#include <linux/ceph/libceph.h>
+#include <linux/ceph/mon_client.h>
+#include <linux/ceph/auth.h>
+#include <linux/ceph/debugfs.h>
+
+#ifdef CONFIG_DEBUG_FS
+
+/*
+ * Implement /sys/kernel/debug/ceph fun
+ *
+ * /sys/kernel/debug/ceph/client* - an instance of the ceph client
+ * .../osdmap - current osdmap
+ * .../monmap - current monmap
+ * .../osdc - active osd requests
+ * .../monc - mon client state
+ * .../dentry_lru - dump contents of dentry lru
+ * .../caps - expose cap (reservation) stats
+ * .../bdi - symlink to ../../bdi/something
+ */
+
+static struct dentry *ceph_debugfs_dir;
+
+static int monmap_show(struct seq_file *s, void *p)
+{
+ int i;
+ struct ceph_client *client = s->private;
+
+ if (client->monc.monmap == NULL)
+ return 0;
+
+ seq_printf(s, "epoch %d\n", client->monc.monmap->epoch);
+ for (i = 0; i < client->monc.monmap->num_mon; i++) {
+ struct ceph_entity_inst *inst =
+ &client->monc.monmap->mon_inst[i];
+
+ seq_printf(s, "\t%s%lld\t%s\n",
+ ENTITY_NAME(inst->name),
+ ceph_pr_addr(&inst->addr.in_addr));
+ }
+ return 0;
+}
+
+static int osdmap_show(struct seq_file *s, void *p)
+{
+ int i;
+ struct ceph_client *client = s->private;
+ struct rb_node *n;
+
+ if (client->osdc.osdmap == NULL)
+ return 0;
+ seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch);
+ seq_printf(s, "flags%s%s\n",
+ (client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ?
+ " NEARFULL" : "",
+ (client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ?
+ " FULL" : "");
+ for (n = rb_first(&client->osdc.osdmap->pg_pools); n; n = rb_next(n)) {
+ struct ceph_pg_pool_info *pool =
+ rb_entry(n, struct ceph_pg_pool_info, node);
+ seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n",
+ pool->id, pool->v.pg_num, pool->pg_num_mask,
+ pool->v.lpg_num, pool->lpg_num_mask);
+ }
+ for (i = 0; i < client->osdc.osdmap->max_osd; i++) {
+ struct ceph_entity_addr *addr =
+ &client->osdc.osdmap->osd_addr[i];
+ int state = client->osdc.osdmap->osd_state[i];
+ char sb[64];
+
+ seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n",
+ i, ceph_pr_addr(&addr->in_addr),
+ ((client->osdc.osdmap->osd_weight[i]*100) >> 16),
+ ceph_osdmap_state_str(sb, sizeof(sb), state));
+ }
+ return 0;
+}
+
+static int monc_show(struct seq_file *s, void *p)
+{
+ struct ceph_client *client = s->private;
+ struct ceph_mon_generic_request *req;
+ struct ceph_mon_client *monc = &client->monc;
+ struct rb_node *rp;
+
+ mutex_lock(&monc->mutex);
+
+ if (monc->have_mdsmap)
+ seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap);
+ if (monc->have_osdmap)
+ seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap);
+ if (monc->want_next_osdmap)
+ seq_printf(s, "want next osdmap\n");
+
+ for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) {
+ __u16 op;
+ req = rb_entry(rp, struct ceph_mon_generic_request, node);
+ op = le16_to_cpu(req->request->hdr.type);
+ if (op == CEPH_MSG_STATFS)
+ seq_printf(s, "%lld statfs\n", req->tid);
+ else
+ seq_printf(s, "%lld unknown\n", req->tid);
+ }
+
+ mutex_unlock(&monc->mutex);
+ return 0;
+}
+
+static int osdc_show(struct seq_file *s, void *pp)
+{
+ struct ceph_client *client = s->private;
+ struct ceph_osd_client *osdc = &client->osdc;
+ struct rb_node *p;
+
+ mutex_lock(&osdc->request_mutex);
+ for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
+ struct ceph_osd_request *req;
+ struct ceph_osd_request_head *head;
+ struct ceph_osd_op *op;
+ int num_ops;
+ int opcode, olen;
+ int i;
+
+ req = rb_entry(p, struct ceph_osd_request, r_node);
+
+ seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid,
+ req->r_osd ? req->r_osd->o_osd : -1,
+ le32_to_cpu(req->r_pgid.pool),
+ le16_to_cpu(req->r_pgid.ps));
+
+ head = req->r_request->front.iov_base;
+ op = (void *)(head + 1);
+
+ num_ops = le16_to_cpu(head->num_ops);
+ olen = le32_to_cpu(head->object_len);
+ seq_printf(s, "%.*s", olen,
+ (const char *)(head->ops + num_ops));
+
+ if (req->r_reassert_version.epoch)
+ seq_printf(s, "\t%u'%llu",
+ (unsigned)le32_to_cpu(req->r_reassert_version.epoch),
+ le64_to_cpu(req->r_reassert_version.version));
+ else
+ seq_printf(s, "\t");
+
+ for (i = 0; i < num_ops; i++) {
+ opcode = le16_to_cpu(op->op);
+ seq_printf(s, "\t%s", ceph_osd_op_name(opcode));
+ op++;
+ }
+
+ seq_printf(s, "\n");
+ }
+ mutex_unlock(&osdc->request_mutex);
+ return 0;
+}
+
+CEPH_DEFINE_SHOW_FUNC(monmap_show)
+CEPH_DEFINE_SHOW_FUNC(osdmap_show)
+CEPH_DEFINE_SHOW_FUNC(monc_show)
+CEPH_DEFINE_SHOW_FUNC(osdc_show)
+
+int ceph_debugfs_init(void)
+{
+ ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
+ if (!ceph_debugfs_dir)
+ return -ENOMEM;
+ return 0;
+}
+
+void ceph_debugfs_cleanup(void)
+{
+ debugfs_remove(ceph_debugfs_dir);
+}
+
+int ceph_debugfs_client_init(struct ceph_client *client)
+{
+ int ret = -ENOMEM;
+ char name[80];
+
+ snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
+ client->monc.auth->global_id);
+
+ client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
+ if (!client->debugfs_dir)
+ goto out;
+
+ client->monc.debugfs_file = debugfs_create_file("monc",
+ 0600,
+ client->debugfs_dir,
+ client,
+ &monc_show_fops);
+ if (!client->monc.debugfs_file)
+ goto out;
+
+ client->osdc.debugfs_file = debugfs_create_file("osdc",
+ 0600,
+ client->debugfs_dir,
+ client,
+ &osdc_show_fops);
+ if (!client->osdc.debugfs_file)
+ goto out;
+
+ client->debugfs_monmap = debugfs_create_file("monmap",
+ 0600,
+ client->debugfs_dir,
+ client,
+ &monmap_show_fops);
+ if (!client->debugfs_monmap)
+ goto out;
+
+ client->debugfs_osdmap = debugfs_create_file("osdmap",
+ 0600,
+ client->debugfs_dir,
+ client,
+ &osdmap_show_fops);
+ if (!client->debugfs_osdmap)
+ goto out;
+
+ return 0;
+
+out:
+ ceph_debugfs_client_cleanup(client);
+ return ret;
+}
+
+void ceph_debugfs_client_cleanup(struct ceph_client *client)
+{
+ debugfs_remove(client->debugfs_osdmap);
+ debugfs_remove(client->debugfs_monmap);
+ debugfs_remove(client->osdc.debugfs_file);
+ debugfs_remove(client->monc.debugfs_file);
+ debugfs_remove(client->debugfs_dir);
+}
+
+#else /* CONFIG_DEBUG_FS */
+
+int ceph_debugfs_init(void)
+{
+ return 0;
+}
+
+void ceph_debugfs_cleanup(void)
+{
+}
+
+int ceph_debugfs_client_init(struct ceph_client *client,
+ int (*module_debugfs_init)(struct ceph_client *))
+{
+ return 0;
+}
+
+void ceph_debugfs_client_cleanup(struct ceph_client *client)
+{
+}
+
+#endif /* CONFIG_DEBUG_FS */
+
+EXPORT_SYMBOL(ceph_debugfs_init);
+EXPORT_SYMBOL(ceph_debugfs_cleanup);
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