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📄 Makefile.in(4.57 KB)
📄 THIRDPARTYLICENSE.cityhash(1.03 KB)
📄 THIRDPARTYLICENSE.cityhash.descrip(39 B)
📄 abd.c(31.72 KB)
📄 aggsum.c(8.46 KB)
📄 arc.c(330.91 KB)
📄 blkptr.c(4.26 KB)
📄 bplist.c(2.38 KB)
📄 bpobj.c(27.82 KB)
📄 bptree.c(8.2 KB)
📄 bqueue.c(4.7 KB)
📄 btree.c(65.19 KB)
📄 dataset_kstats.c(6.32 KB)
📄 dbuf.c(141.84 KB)
📄 dbuf_stats.c(6.05 KB)
📄 ddt.c(28.01 KB)
📄 ddt_zap.c(4.38 KB)
📄 dmu.c(60.44 KB)
📄 dmu_diff.c(6.25 KB)
📄 dmu_object.c(14.73 KB)
📄 dmu_objset.c(79.38 KB)
📄 dmu_recv.c(98.69 KB)
📄 dmu_redact.c(37.09 KB)
📄 dmu_send.c(95.51 KB)
📄 dmu_traverse.c(21.98 KB)
📄 dmu_tx.c(40.13 KB)
📄 dmu_zfetch.c(13.56 KB)
📄 dnode.c(71.32 KB)
📄 dnode_sync.c(24.93 KB)
📄 dsl_bookmark.c(51.22 KB)
📄 dsl_crypt.c(78.06 KB)
📄 dsl_dataset.c(141.61 KB)
📄 dsl_deadlist.c(27.94 KB)
📄 dsl_deleg.c(19.92 KB)
📄 dsl_destroy.c(36.73 KB)
📄 dsl_dir.c(65.45 KB)
📄 dsl_pool.c(42.92 KB)
📄 dsl_prop.c(32.88 KB)
📄 dsl_scan.c(134.47 KB)
📄 dsl_synctask.c(7.94 KB)
📄 dsl_userhold.c(18.26 KB)
📄 edonr_zfs.c(3.21 KB)
📄 fm.c(39.75 KB)
📄 gzip.c(2.57 KB)
📄 hkdf.c(4.5 KB)
📄 lz4.c(26.46 KB)
📄 lzjb.c(3.85 KB)
📄 metaslab.c(190.62 KB)
📄 mmp.c(24.93 KB)
📄 multilist.c(12.21 KB)
📄 objlist.c(2.58 KB)
📄 pathname.c(2.52 KB)
📄 range_tree.c(24.9 KB)
📄 refcount.c(7.82 KB)
📄 rrwlock.c(10.82 KB)
📄 sa.c(59.23 KB)
📄 sha256.c(2.89 KB)
📄 skein_zfs.c(2.92 KB)
📄 spa.c(272.81 KB)
📄 spa_boot.c(1.28 KB)
📄 spa_checkpoint.c(21.54 KB)
📄 spa_config.c(16.97 KB)
📄 spa_errlog.c(11.35 KB)
📄 spa_history.c(17.75 KB)
📄 spa_log_spacemap.c(47.13 KB)
📄 spa_misc.c(75.4 KB)
📄 spa_stats.c(27.08 KB)
📄 space_map.c(31.45 KB)
📄 space_reftree.c(4.21 KB)
📄 txg.c(27.49 KB)
📄 uberblock.c(2.17 KB)
📄 unique.c(2.53 KB)
📄 vdev.c(143.91 KB)
📄 vdev_cache.c(11.71 KB)
📄 vdev_draid.c(96.86 KB)
📄 vdev_draid_rand.c(1.16 KB)
📄 vdev_indirect.c(60.83 KB)
📄 vdev_indirect_births.c(5.88 KB)
📄 vdev_indirect_mapping.c(18.06 KB)
📄 vdev_initialize.c(22.38 KB)
📄 vdev_label.c(57.52 KB)
📄 vdev_mirror.c(26.76 KB)
📄 vdev_missing.c(3.74 KB)
📄 vdev_queue.c(37.61 KB)
📄 vdev_raidz.c(76.09 KB)
📄 vdev_raidz_math.c(17.18 KB)
📄 vdev_raidz_math_aarch64_neon.c(112.13 KB)
📄 vdev_raidz_math_aarch64_neon_common.h(23.64 KB)
📄 vdev_raidz_math_aarch64_neonx2.c(5.39 KB)
📄 vdev_raidz_math_avx2.c(10.64 KB)
📄 vdev_raidz_math_avx512bw.c(10.93 KB)
📄 vdev_raidz_math_avx512f.c(17.9 KB)
📄 vdev_raidz_math_impl.h(34.78 KB)
📄 vdev_raidz_math_powerpc_altivec.c(213.46 KB)
📄 vdev_raidz_math_powerpc_altivec_common.h(22.62 KB)
📄 vdev_raidz_math_scalar.c(9.54 KB)
📄 vdev_raidz_math_sse2.c(25.84 KB)
📄 vdev_raidz_math_ssse3.c(118 KB)
📄 vdev_rebuild.c(34.65 KB)
📄 vdev_removal.c(72.08 KB)
📄 vdev_root.c(4.28 KB)
📄 vdev_trim.c(50.92 KB)
📄 zap.c(35.35 KB)
📄 zap_leaf.c(22.75 KB)
📄 zap_micro.c(42.18 KB)
📄 zcp.c(42.29 KB)
📄 zcp_get.c(21.01 KB)
📄 zcp_global.c(1.9 KB)
📄 zcp_iter.c(18.21 KB)
📄 zcp_set.c(2.37 KB)
📄 zcp_synctask.c(13.69 KB)
📄 zfeature.c(17.6 KB)
📄 zfs_byteswap.c(5.64 KB)
📄 zfs_fm.c(40.58 KB)
📄 zfs_fuid.c(19.69 KB)
📄 zfs_ioctl.c(195.48 KB)
📄 zfs_log.c(20.6 KB)
📄 zfs_onexit.c(5.09 KB)
📄 zfs_quota.c(12.93 KB)
📄 zfs_ratelimit.c(2.35 KB)
📄 zfs_replay.c(26.11 KB)
📄 zfs_rlock.c(20.38 KB)
📄 zfs_sa.c(13.09 KB)
📄 zfs_vnops.c(22 KB)
📄 zil.c(111.32 KB)
📄 zio.c(144.72 KB)
📄 zio_checksum.c(17.28 KB)
📄 zio_compress.c(5.92 KB)
📄 zio_inject.c(25.79 KB)
📄 zle.c(2.52 KB)
📄 zrlock.c(4.45 KB)
📄 zthr.c(16.41 KB)
📄 zvol.c(42.96 KB)

Editing: dbuf_stats.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

#include <sys/zfs_context.h>
#include <sys/dbuf.h>
#include <sys/dmu_objset.h>

/*
 * Calculate the index of the arc header for the state, disabled by default.
 */
int zfs_dbuf_state_index = 0;

/*
 * ==========================================================================
 * Dbuf Hash Read Routines
 * ==========================================================================
 */
typedef struct dbuf_stats_t {
	kmutex_t		lock;
	kstat_t			*kstat;
	dbuf_hash_table_t	*hash;
	int			idx;
} dbuf_stats_t;

static dbuf_stats_t dbuf_stats_hash_table;

static int
dbuf_stats_hash_table_headers(char *buf, size_t size)
{
	(void) snprintf(buf, size,
	    "%-96s | %-119s | %s\n"
	    "%-16s %-8s %-8s %-8s %-8s %-10s %-8s %-5s %-5s %-7s %3s | "
	    "%-5s %-5s %-9s %-6s %-8s %-12s "
	    "%-6s %-6s %-6s %-6s %-6s %-8s %-8s %-8s %-6s | "
	    "%-6s %-6s %-8s %-8s %-6s %-6s %-6s %-8s %-8s\n",
	    "dbuf", "arcbuf", "dnode", "pool", "objset", "object", "level",
	    "blkid", "offset", "dbsize", "meta", "state", "dbholds", "dbc",
	    "list", "atype", "flags", "count", "asize", "access",
	    "mru", "gmru", "mfu", "gmfu", "l2", "l2_dattr", "l2_asize",
	    "l2_comp", "aholds", "dtype", "btype", "data_bs", "meta_bs",
	    "bsize", "lvls", "dholds", "blocks", "dsize");

return (0);
}

static int
__dbuf_stats_hash_table_data(char *buf, size_t size, dmu_buf_impl_t *db)
{
	arc_buf_info_t abi = { 0 };
	dmu_object_info_t doi = { 0 };
	dnode_t *dn = DB_DNODE(db);
	size_t nwritten;

if (db->db_buf)
		arc_buf_info(db->db_buf, &abi, zfs_dbuf_state_index);

__dmu_object_info_from_dnode(dn, &doi);

nwritten = snprintf(buf, size,
	    "%-16s %-8llu %-8lld %-8lld %-8lld %-10llu %-8llu %-5d %-5d "
	    "%-7lu %-3d | %-5d %-5d 0x%-7x %-6lu %-8llu %-12llu "
	    "%-6lu %-6lu %-6lu %-6lu %-6lu %-8llu %-8llu %-8d %-6lu | "
	    "%-6d %-6d %-8lu %-8lu %-6llu %-6lu %-6lu %-8llu %-8llu\n",
	    /* dmu_buf_impl_t */
	    spa_name(dn->dn_objset->os_spa),
	    (u_longlong_t)dmu_objset_id(db->db_objset),
	    (longlong_t)db->db.db_object,
	    (longlong_t)db->db_level,
	    (longlong_t)db->db_blkid,
	    (u_longlong_t)db->db.db_offset,
	    (u_longlong_t)db->db.db_size,
	    !!dbuf_is_metadata(db),
	    db->db_state,
	    (ulong_t)zfs_refcount_count(&db->db_holds),
	    multilist_link_active(&db->db_cache_link),
	    /* arc_buf_info_t */
	    abi.abi_state_type,
	    abi.abi_state_contents,
	    abi.abi_flags,
	    (ulong_t)abi.abi_bufcnt,
	    (u_longlong_t)abi.abi_size,
	    (u_longlong_t)abi.abi_access,
	    (ulong_t)abi.abi_mru_hits,
	    (ulong_t)abi.abi_mru_ghost_hits,
	    (ulong_t)abi.abi_mfu_hits,
	    (ulong_t)abi.abi_mfu_ghost_hits,
	    (ulong_t)abi.abi_l2arc_hits,
	    (u_longlong_t)abi.abi_l2arc_dattr,
	    (u_longlong_t)abi.abi_l2arc_asize,
	    abi.abi_l2arc_compress,
	    (ulong_t)abi.abi_holds,
	    /* dmu_object_info_t */
	    doi.doi_type,
	    doi.doi_bonus_type,
	    (ulong_t)doi.doi_data_block_size,
	    (ulong_t)doi.doi_metadata_block_size,
	    (u_longlong_t)doi.doi_bonus_size,
	    (ulong_t)doi.doi_indirection,
	    (ulong_t)zfs_refcount_count(&dn->dn_holds),
	    (u_longlong_t)doi.doi_fill_count,
	    (u_longlong_t)doi.doi_max_offset);

if (nwritten >= size)
		return (size);

return (nwritten + 1);
}

static int
dbuf_stats_hash_table_data(char *buf, size_t size, void *data)
{
	dbuf_stats_t *dsh = (dbuf_stats_t *)data;
	dbuf_hash_table_t *h = dsh->hash;
	dmu_buf_impl_t *db;
	int length, error = 0;

ASSERT3S(dsh->idx, >=, 0);
	ASSERT3S(dsh->idx, <=, h->hash_table_mask);
	if (size)
		buf[0] = 0;

mutex_enter(DBUF_HASH_MUTEX(h, dsh->idx));
	for (db = h->hash_table[dsh->idx]; db != NULL; db = db->db_hash_next) {
		/*
		 * Returning ENOMEM will cause the data and header functions
		 * to be called with a larger scratch buffers.
		 */
		if (size < 512) {
			error = SET_ERROR(ENOMEM);
			break;
		}

mutex_enter(&db->db_mtx);

if (db->db_state != DB_EVICTING) {
			length = __dbuf_stats_hash_table_data(buf, size, db);
			buf += length;
			size -= length;
		}

mutex_exit(&db->db_mtx);
	}
	mutex_exit(DBUF_HASH_MUTEX(h, dsh->idx));

return (error);
}

static void *
dbuf_stats_hash_table_addr(kstat_t *ksp, loff_t n)
{
	dbuf_stats_t *dsh = ksp->ks_private;

ASSERT(MUTEX_HELD(&dsh->lock));

if (n <= dsh->hash->hash_table_mask) {
		dsh->idx = n;
		return (dsh);
	}

return (NULL);
}

static void
dbuf_stats_hash_table_init(dbuf_hash_table_t *hash)
{
	dbuf_stats_t *dsh = &dbuf_stats_hash_table;
	kstat_t *ksp;

mutex_init(&dsh->lock, NULL, MUTEX_DEFAULT, NULL);
	dsh->hash = hash;

ksp = kstat_create("zfs", 0, "dbufs", "misc",
	    KSTAT_TYPE_RAW, 0, KSTAT_FLAG_VIRTUAL);
	dsh->kstat = ksp;

if (ksp) {
		ksp->ks_lock = &dsh->lock;
		ksp->ks_ndata = UINT32_MAX;
		ksp->ks_private = dsh;
		kstat_set_raw_ops(ksp, dbuf_stats_hash_table_headers,
		    dbuf_stats_hash_table_data, dbuf_stats_hash_table_addr);
		kstat_install(ksp);
	}
}

static void
dbuf_stats_hash_table_destroy(void)
{
	dbuf_stats_t *dsh = &dbuf_stats_hash_table;
	kstat_t *ksp;

ksp = dsh->kstat;
	if (ksp)
		kstat_delete(ksp);

mutex_destroy(&dsh->lock);
}

void
dbuf_stats_init(dbuf_hash_table_t *hash)
{
	dbuf_stats_hash_table_init(hash);
}

void
dbuf_stats_destroy(void)
{
	dbuf_stats_hash_table_destroy();
}

/* BEGIN CSTYLED */
ZFS_MODULE_PARAM(zfs, zfs_, dbuf_state_index, INT, ZMOD_RW,
	"Calculate arc header index");
/* END CSTYLED */

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Editing: dbuf_stats.c

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