cregit-Linux how code gets into the kernel

Release 4.11 net/ceph/debugfs.c

Directory: net/ceph
#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
 *      .../client_options - libceph-only (i.e. not rbd or cephfs) options
 *      .../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; }

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Yehuda Sadeh Weinraub120100.00%1100.00%
Total120100.00%1100.00%


static int osdmap_show(struct seq_file *s, void *p) { int i; struct ceph_client *client = s->private; struct ceph_osd_client *osdc = &client->osdc; struct ceph_osdmap *map = osdc->osdmap; struct rb_node *n; if (map == NULL) return 0; down_read(&osdc->lock); seq_printf(s, "epoch %d flags 0x%x\n", map->epoch, map->flags); for (n = rb_first(&map->pg_pools); n; n = rb_next(n)) { struct ceph_pg_pool_info *pi = rb_entry(n, struct ceph_pg_pool_info, node); seq_printf(s, "pool %lld '%s' type %d size %d min_size %d pg_num %u pg_num_mask %d flags 0x%llx lfor %u read_tier %lld write_tier %lld\n", pi->id, pi->name, pi->type, pi->size, pi->min_size, pi->pg_num, pi->pg_num_mask, pi->flags, pi->last_force_request_resend, pi->read_tier, pi->write_tier); } for (i = 0; i < map->max_osd; i++) { struct ceph_entity_addr *addr = &map->osd_addr[i]; int state = map->osd_state[i]; char sb[64]; seq_printf(s, "osd%d\t%s\t%3d%%\t(%s)\t%3d%%\n", i, ceph_pr_addr(&addr->in_addr), ((map->osd_weight[i]*100) >> 16), ceph_osdmap_state_str(sb, sizeof(sb), state), ((ceph_get_primary_affinity(map, i)*100) >> 16)); } for (n = rb_first(&map->pg_temp); n; n = rb_next(n)) { struct ceph_pg_mapping *pg = rb_entry(n, struct ceph_pg_mapping, node); seq_printf(s, "pg_temp %llu.%x [", pg->pgid.pool, pg->pgid.seed); for (i = 0; i < pg->pg_temp.len; i++) seq_printf(s, "%s%d", (i == 0 ? "" : ","), pg->pg_temp.osds[i]); seq_printf(s, "]\n"); } for (n = rb_first(&map->primary_temp); n; n = rb_next(n)) { struct ceph_pg_mapping *pg = rb_entry(n, struct ceph_pg_mapping, node); seq_printf(s, "primary_temp %llu.%x %d\n", pg->pgid.pool, pg->pgid.seed, pg->primary_temp.osd); } up_read(&osdc->lock); return 0; }

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Ilya Dryomov26557.86%888.89%
Yehuda Sadeh Weinraub19342.14%111.11%
Total458100.00%9100.00%


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; int i; mutex_lock(&monc->mutex); for (i = 0; i < ARRAY_SIZE(monc->subs); i++) { seq_printf(s, "have %s %u", ceph_sub_str[i], monc->subs[i].have); if (monc->subs[i].want) seq_printf(s, " want %llu%s", le64_to_cpu(monc->subs[i].item.start), (monc->subs[i].item.flags & CEPH_SUBSCRIBE_ONETIME ? "" : "+")); seq_putc(s, '\n'); } seq_printf(s, "fs_cluster_id %d\n", monc->fs_cluster_id); 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, "%llu statfs\n", req->tid); else if (op == CEPH_MSG_MON_GET_VERSION) seq_printf(s, "%llu mon_get_version", req->tid); else seq_printf(s, "%llu unknown\n", req->tid); } mutex_unlock(&monc->mutex); return 0; }

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Yehuda Sadeh Weinraub16660.58%120.00%
Ilya Dryomov10839.42%480.00%
Total274100.00%5100.00%


static void dump_target(struct seq_file *s, struct ceph_osd_request_target *t) { int i; seq_printf(s, "osd%d\t%llu.%x\t[", t->osd, t->pgid.pool, t->pgid.seed); for (i = 0; i < t->up.size; i++) seq_printf(s, "%s%d", (!i ? "" : ","), t->up.osds[i]); seq_printf(s, "]/%d\t[", t->up.primary); for (i = 0; i < t->acting.size; i++) seq_printf(s, "%s%d", (!i ? "" : ","), t->acting.osds[i]); seq_printf(s, "]/%d\t", t->acting.primary); if (t->target_oloc.pool_ns) { seq_printf(s, "%*pE/%*pE\t0x%x", (int)t->target_oloc.pool_ns->len, t->target_oloc.pool_ns->str, t->target_oid.name_len, t->target_oid.name, t->flags); } else { seq_printf(s, "%*pE\t0x%x", t->target_oid.name_len, t->target_oid.name, t->flags); } if (t->paused) seq_puts(s, "\tP"); }

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Ilya Dryomov12551.44%233.33%
Yan, Zheng6325.93%116.67%
Yehuda Sadeh Weinraub5321.81%116.67%
Alex Elder10.41%116.67%
Sage Weil10.41%116.67%
Total243100.00%6100.00%


static void dump_request(struct seq_file *s, struct ceph_osd_request *req) { int i; seq_printf(s, "%llu\t", req->r_tid); dump_target(s, &req->r_t); seq_printf(s, "\t%d\t%u'%llu", req->r_attempts, le32_to_cpu(req->r_replay_version.epoch), le64_to_cpu(req->r_replay_version.version)); for (i = 0; i < req->r_num_ops; i++) { struct ceph_osd_req_op *op = &req->r_ops[i]; seq_printf(s, "%s%s", (i == 0 ? "\t" : ","), ceph_osd_op_name(op->op)); if (op->op == CEPH_OSD_OP_WATCH) seq_printf(s, "-%s", ceph_osd_watch_op_name(op->watch.op)); } seq_putc(s, '\n'); }

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Ilya Dryomov9964.29%350.00%
Yehuda Sadeh Weinraub4730.52%116.67%
Sage Weil74.55%116.67%
Alex Elder10.65%116.67%
Total154100.00%6100.00%


static void dump_requests(struct seq_file *s, struct ceph_osd *osd) { struct rb_node *n; mutex_lock(&osd->lock); for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { struct ceph_osd_request *req = rb_entry(n, struct ceph_osd_request, r_node); dump_request(s, req); } mutex_unlock(&osd->lock); }

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Ilya Dryomov82100.00%1100.00%
Total82100.00%1100.00%


static void dump_linger_request(struct seq_file *s, struct ceph_osd_linger_request *lreq) { seq_printf(s, "%llu\t", lreq->linger_id); dump_target(s, &lreq->t); seq_printf(s, "\t%u\t%s%s/%d\n", lreq->register_gen, lreq->is_watch ? "W" : "N", lreq->committed ? "C" : "", lreq->last_error); }

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Ilya Dryomov68100.00%2100.00%
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static void dump_linger_requests(struct seq_file *s, struct ceph_osd *osd) { struct rb_node *n; mutex_lock(&osd->lock); for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { struct ceph_osd_linger_request *lreq = rb_entry(n, struct ceph_osd_linger_request, node); dump_linger_request(s, lreq); } mutex_unlock(&osd->lock); }

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Ilya Dryomov82100.00%1100.00%
Total82100.00%1100.00%


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 *n; down_read(&osdc->lock); seq_printf(s, "REQUESTS %d homeless %d\n", atomic_read(&osdc->num_requests), atomic_read(&osdc->num_homeless)); for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); dump_requests(s, osd); } dump_requests(s, &osdc->homeless_osd); seq_puts(s, "LINGER REQUESTS\n"); for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); dump_linger_requests(s, osd); } dump_linger_requests(s, &osdc->homeless_osd); up_read(&osdc->lock); return 0; }

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Ilya Dryomov18291.92%375.00%
Yehuda Sadeh Weinraub168.08%125.00%
Total198100.00%4100.00%


static int client_options_show(struct seq_file *s, void *p) { struct ceph_client *client = s->private; int ret; ret = ceph_print_client_options(s, client); if (ret) return ret; seq_putc(s, '\n'); return 0; }

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Ilya Dryomov53100.00%1100.00%
Total53100.00%1100.00%

CEPH_DEFINE_SHOW_FUNC(monmap_show) CEPH_DEFINE_SHOW_FUNC(osdmap_show) CEPH_DEFINE_SHOW_FUNC(monc_show) CEPH_DEFINE_SHOW_FUNC(osdc_show) CEPH_DEFINE_SHOW_FUNC(client_options_show)
int ceph_debugfs_init(void) { ceph_debugfs_dir = debugfs_create_dir("ceph", NULL); if (!ceph_debugfs_dir) return -ENOMEM; return 0; }

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Yehuda Sadeh Weinraub28100.00%1100.00%
Total28100.00%1100.00%


void ceph_debugfs_cleanup(void) { debugfs_remove(ceph_debugfs_dir); }

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Yehuda Sadeh Weinraub12100.00%1100.00%
Total12100.00%1100.00%


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); dout("ceph_debugfs_client_init %p %s\n", client, name); BUG_ON(client->debugfs_dir); 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; client->debugfs_options = debugfs_create_file("client_options", 0600, client->debugfs_dir, client, &client_options_show_fops); if (!client->debugfs_options) goto out; return 0; out: ceph_debugfs_client_cleanup(client); return ret; }

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Yehuda Sadeh Weinraub20981.96%133.33%
Ilya Dryomov3011.76%133.33%
Sage Weil166.27%133.33%
Total255100.00%3100.00%


void ceph_debugfs_client_cleanup(struct ceph_client *client) { dout("ceph_debugfs_client_cleanup %p\n", client); debugfs_remove(client->debugfs_options); 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); }

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Yehuda Sadeh Weinraub4977.78%133.33%
Sage Weil711.11%133.33%
Ilya Dryomov711.11%133.33%
Total63100.00%3100.00%

#else /* CONFIG_DEBUG_FS */
int ceph_debugfs_init(void) { return 0; }

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Yehuda Sadeh Weinraub10100.00%1100.00%
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void ceph_debugfs_cleanup(void) { }

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Yehuda Sadeh Weinraub6100.00%1100.00%
Total6100.00%1100.00%


int ceph_debugfs_client_init(struct ceph_client *client) { return 0; }

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Yehuda Sadeh Weinraub13100.00%1100.00%
Total13100.00%1100.00%


void ceph_debugfs_client_cleanup(struct ceph_client *client) { }

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Yehuda Sadeh Weinraub9100.00%1100.00%
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#endif /* CONFIG_DEBUG_FS */ EXPORT_SYMBOL(ceph_debugfs_init); EXPORT_SYMBOL(ceph_debugfs_cleanup);

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Ilya Dryomov110650.11%1979.17%
Yehuda Sadeh Weinraub100545.54%14.17%
Yan, Zheng632.85%14.17%
Sage Weil311.40%28.33%
Alex Elder20.09%14.17%
Total2207100.00%24100.00%
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