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scoutfs/kmod/src/counters.h
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Zach Brown 45cd62974a Extract .totl. item merging into own functions 
The _READ_XATTR_TOTALS ioctl had manual code for merging the .totl.
total and value while reading fs items.  We're going to want to do this
in another reader so let's put these in their own funcions that clearly
isolate the logic of merging the fs items into a coherent result.

We can get rid of some of the totl_read_ counters that tracked which
items we were merging.  They weren't adding much value and conflated the
reading ioctl interface with the merging logic.

Signed-off-by: Zach Brown <zab@versity.com>
2024-05-09 11:54:54 -07:00

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#ifndef _SCOUTFS_COUNTERS_H_
#define _SCOUTFS_COUNTERS_H_
#include <linux/kobject.h>
#include <linux/completion.h>
#include <linux/percpu_counter.h>
#include "super.h"
/*
* We only have to define each counter here and it'll be enumerated in
* other places by this macro. Don't forget to update LAST_COUNTER.
*/
#define EXPAND_EACH_COUNTER \
EXPAND_COUNTER(alloc_alloc_data) \
EXPAND_COUNTER(alloc_alloc_meta) \
EXPAND_COUNTER(alloc_free_data) \
EXPAND_COUNTER(alloc_free_meta) \
EXPAND_COUNTER(alloc_list_avail_lo) \
EXPAND_COUNTER(alloc_list_freed_hi) \
EXPAND_COUNTER(alloc_move) \
EXPAND_COUNTER(alloc_moved_extent) \
EXPAND_COUNTER(alloc_stale_list_block) \
EXPAND_COUNTER(block_cache_access_update) \
EXPAND_COUNTER(block_cache_alloc_failure) \
EXPAND_COUNTER(block_cache_alloc_page_order) \
EXPAND_COUNTER(block_cache_alloc_virt) \
EXPAND_COUNTER(block_cache_end_io_error) \
EXPAND_COUNTER(block_cache_forget) \
EXPAND_COUNTER(block_cache_free) \
EXPAND_COUNTER(block_cache_free_work) \
EXPAND_COUNTER(block_cache_remove_stale) \
EXPAND_COUNTER(block_cache_count_objects) \
EXPAND_COUNTER(block_cache_scan_objects) \
EXPAND_COUNTER(block_cache_shrink) \
EXPAND_COUNTER(block_cache_shrink_next) \
EXPAND_COUNTER(block_cache_shrink_recent) \
EXPAND_COUNTER(block_cache_shrink_remove) \
EXPAND_COUNTER(block_cache_shrink_stop) \
EXPAND_COUNTER(btree_compact_values) \
EXPAND_COUNTER(btree_compact_values_enomem) \
EXPAND_COUNTER(btree_delete) \
EXPAND_COUNTER(btree_dirty) \
EXPAND_COUNTER(btree_force) \
EXPAND_COUNTER(btree_join) \
EXPAND_COUNTER(btree_insert) \
EXPAND_COUNTER(btree_leaf_item_hash_search) \
EXPAND_COUNTER(btree_lookup) \
EXPAND_COUNTER(btree_merge) \
EXPAND_COUNTER(btree_merge_alloc_low) \
EXPAND_COUNTER(btree_merge_delete) \
EXPAND_COUNTER(btree_merge_delta_combined) \
EXPAND_COUNTER(btree_merge_delta_null) \
EXPAND_COUNTER(btree_merge_dirty_limit) \
EXPAND_COUNTER(btree_merge_drop_old) \
EXPAND_COUNTER(btree_merge_insert) \
EXPAND_COUNTER(btree_merge_update) \
EXPAND_COUNTER(btree_merge_walk) \
EXPAND_COUNTER(btree_next) \
EXPAND_COUNTER(btree_prev) \
EXPAND_COUNTER(btree_split) \
EXPAND_COUNTER(btree_stale_read) \
EXPAND_COUNTER(btree_update) \
EXPAND_COUNTER(btree_walk) \
EXPAND_COUNTER(btree_walk_restart) \
EXPAND_COUNTER(client_farewell_error) \
EXPAND_COUNTER(corrupt_btree_block_level) \
EXPAND_COUNTER(corrupt_btree_no_child_ref) \
EXPAND_COUNTER(corrupt_dirent_backref_name_len) \
EXPAND_COUNTER(corrupt_dirent_name_len) \
EXPAND_COUNTER(corrupt_dirent_readdir_name_len) \
EXPAND_COUNTER(corrupt_inode_block_counts) \
EXPAND_COUNTER(corrupt_symlink_inode_size) \
EXPAND_COUNTER(corrupt_symlink_missing_item) \
EXPAND_COUNTER(corrupt_symlink_not_null_term) \
EXPAND_COUNTER(data_fallocate_enobufs_retry) \
EXPAND_COUNTER(data_write_begin_enobufs_retry) \
EXPAND_COUNTER(dentry_revalidate_error) \
EXPAND_COUNTER(dentry_revalidate_invalid) \
EXPAND_COUNTER(dentry_revalidate_rcu) \
EXPAND_COUNTER(dentry_revalidate_root) \
EXPAND_COUNTER(dentry_revalidate_valid) \
EXPAND_COUNTER(dir_backref_excessive_retries) \
EXPAND_COUNTER(ext_op_insert) \
EXPAND_COUNTER(ext_op_next) \
EXPAND_COUNTER(ext_op_remove) \
EXPAND_COUNTER(forest_bloom_fail) \
EXPAND_COUNTER(forest_bloom_pass) \
EXPAND_COUNTER(forest_bloom_stale) \
EXPAND_COUNTER(forest_read_items) \
EXPAND_COUNTER(forest_roots_next_hint) \
EXPAND_COUNTER(forest_set_bloom_bits) \
EXPAND_COUNTER(item_cache_count_objects) \
EXPAND_COUNTER(item_cache_scan_objects) \
EXPAND_COUNTER(item_clear_dirty) \
EXPAND_COUNTER(item_create) \
EXPAND_COUNTER(item_delete) \
EXPAND_COUNTER(item_delta) \
EXPAND_COUNTER(item_delta_written) \
EXPAND_COUNTER(item_dirty) \
EXPAND_COUNTER(item_invalidate) \
EXPAND_COUNTER(item_invalidate_page) \
EXPAND_COUNTER(item_lookup) \
EXPAND_COUNTER(item_mark_dirty) \
EXPAND_COUNTER(item_next) \
EXPAND_COUNTER(item_page_accessed) \
EXPAND_COUNTER(item_page_alloc) \
EXPAND_COUNTER(item_page_clear_dirty) \
EXPAND_COUNTER(item_page_compact) \
EXPAND_COUNTER(item_page_free) \
EXPAND_COUNTER(item_page_lru_add) \
EXPAND_COUNTER(item_page_lru_remove) \
EXPAND_COUNTER(item_page_mark_dirty) \
EXPAND_COUNTER(item_page_rbtree_walk) \
EXPAND_COUNTER(item_page_split) \
EXPAND_COUNTER(item_pcpu_add_replaced) \
EXPAND_COUNTER(item_pcpu_page_hit) \
EXPAND_COUNTER(item_pcpu_page_miss) \
EXPAND_COUNTER(item_pcpu_page_miss_keys) \
EXPAND_COUNTER(item_read_pages_split) \
EXPAND_COUNTER(item_shrink_page) \
EXPAND_COUNTER(item_shrink_page_dirty) \
EXPAND_COUNTER(item_shrink_page_reader) \
EXPAND_COUNTER(item_shrink_page_trylock) \
EXPAND_COUNTER(item_update) \
EXPAND_COUNTER(item_write_dirty) \
EXPAND_COUNTER(lock_alloc) \
EXPAND_COUNTER(lock_count_objects) \
EXPAND_COUNTER(lock_free) \
EXPAND_COUNTER(lock_grant_request) \
EXPAND_COUNTER(lock_grant_response) \
EXPAND_COUNTER(lock_invalidate_coverage) \
EXPAND_COUNTER(lock_invalidate_inode) \
EXPAND_COUNTER(lock_invalidate_request) \
EXPAND_COUNTER(lock_invalidate_response) \
EXPAND_COUNTER(lock_invalidate_sync) \
EXPAND_COUNTER(lock_invalidate_work) \
EXPAND_COUNTER(lock_lock) \
EXPAND_COUNTER(lock_lock_error) \
EXPAND_COUNTER(lock_nonblock_eagain) \
EXPAND_COUNTER(lock_recover_request) \
EXPAND_COUNTER(lock_scan_objects) \
EXPAND_COUNTER(lock_shrink_attempted) \
EXPAND_COUNTER(lock_shrink_aborted) \
EXPAND_COUNTER(lock_shrink_work) \
EXPAND_COUNTER(lock_unlock) \
EXPAND_COUNTER(lock_wait) \
EXPAND_COUNTER(log_merge_wait_timeout) \
EXPAND_COUNTER(net_dropped_response) \
EXPAND_COUNTER(net_send_bytes) \
EXPAND_COUNTER(net_send_error) \
EXPAND_COUNTER(net_send_messages) \
EXPAND_COUNTER(net_recv_bytes) \
EXPAND_COUNTER(net_recv_dropped_duplicate) \
EXPAND_COUNTER(net_recv_error) \
EXPAND_COUNTER(net_recv_invalid_message) \
EXPAND_COUNTER(net_recv_messages) \
EXPAND_COUNTER(net_unknown_request) \
EXPAND_COUNTER(orphan_scan) \
EXPAND_COUNTER(orphan_scan_attempts) \
EXPAND_COUNTER(orphan_scan_cached) \
EXPAND_COUNTER(orphan_scan_error) \
EXPAND_COUNTER(orphan_scan_item) \
EXPAND_COUNTER(orphan_scan_omap_set) \
EXPAND_COUNTER(quorum_candidate_server_stopping) \
EXPAND_COUNTER(quorum_elected) \
EXPAND_COUNTER(quorum_fence_error) \
EXPAND_COUNTER(quorum_fence_leader) \
EXPAND_COUNTER(quorum_read_invalid_block) \
EXPAND_COUNTER(quorum_recv_error) \
EXPAND_COUNTER(quorum_recv_heartbeat) \
EXPAND_COUNTER(quorum_recv_invalid) \
EXPAND_COUNTER(quorum_recv_resignation) \
EXPAND_COUNTER(quorum_recv_vote) \
EXPAND_COUNTER(quorum_send_heartbeat) \
EXPAND_COUNTER(quorum_send_heartbeat_dropped) \
EXPAND_COUNTER(quorum_send_resignation) \
EXPAND_COUNTER(quorum_send_request) \
EXPAND_COUNTER(quorum_send_vote) \
EXPAND_COUNTER(quorum_server_shutdown) \
EXPAND_COUNTER(quorum_term_follower) \
EXPAND_COUNTER(server_commit_hold) \
EXPAND_COUNTER(server_commit_queue) \
EXPAND_COUNTER(server_commit_worker) \
EXPAND_COUNTER(srch_add_entry) \
EXPAND_COUNTER(srch_compact_dirty_block) \
EXPAND_COUNTER(srch_compact_entry) \
EXPAND_COUNTER(srch_compact_error) \
EXPAND_COUNTER(srch_compact_flush) \
EXPAND_COUNTER(srch_compact_log_page) \
EXPAND_COUNTER(srch_compact_removed_entry) \
EXPAND_COUNTER(srch_rotate_log) \
EXPAND_COUNTER(srch_search_log) \
EXPAND_COUNTER(srch_search_log_block) \
EXPAND_COUNTER(srch_search_retry_empty) \
EXPAND_COUNTER(srch_search_sorted) \
EXPAND_COUNTER(srch_search_sorted_block) \
EXPAND_COUNTER(srch_search_xattrs) \
EXPAND_COUNTER(srch_read_stale) \
EXPAND_COUNTER(statfs) \
EXPAND_COUNTER(totl_read_copied) \
EXPAND_COUNTER(totl_read_item) \
EXPAND_COUNTER(trans_commit_data_alloc_low) \
EXPAND_COUNTER(trans_commit_dirty_meta_full) \
EXPAND_COUNTER(trans_commit_fsync) \
EXPAND_COUNTER(trans_commit_meta_alloc_low) \
EXPAND_COUNTER(trans_commit_sync_fs) \
EXPAND_COUNTER(trans_commit_timer) \
EXPAND_COUNTER(trans_commit_written)
#define FIRST_COUNTER alloc_alloc_data
#define LAST_COUNTER trans_commit_written
#undef EXPAND_COUNTER
#define EXPAND_COUNTER(which) struct percpu_counter which;
struct scoutfs_counters {
/* $sysfs/fs/scoutfs/$id/counters/ */
struct kobject kobj;
struct completion comp;
EXPAND_EACH_COUNTER
};
#define scoutfs_foreach_counter(sb, pcpu) \
for (pcpu = &SCOUTFS_SB(sb)->counters->FIRST_COUNTER; \
pcpu <= &SCOUTFS_SB(sb)->counters->LAST_COUNTER; \
pcpu++)
/*
* We always read with _sum, we have no use for the shared count and
* certainly don't want to pay the cost of a shared lock to update it.
* The default batch of 32 make counter increments show up significantly
* in profiles.
*/
#define SCOUTFS_PCPU_COUNTER_BATCH (1 << 30)
#define scoutfs_inc_counter(sb, which) \
percpu_counter_add_batch(&SCOUTFS_SB(sb)->counters->which, 1, \
SCOUTFS_PCPU_COUNTER_BATCH)
#define scoutfs_add_counter(sb, which, cnt) \
percpu_counter_add_batch(&SCOUTFS_SB(sb)->counters->which, cnt, \
SCOUTFS_PCPU_COUNTER_BATCH)
void __init scoutfs_init_counters(void);
int scoutfs_setup_counters(struct super_block *sb);
void scoutfs_destroy_counters(struct super_block *sb);
#endif
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