AuxXxilium/linux_dsm_epyc7002
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34e73cc930
linux_dsm_epyc7002/fs/btrfs
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Qu Wenruo 34e73cc930 btrfs: trace: Introduce trace events for sleepable tree lock 
There are two tree lock events which can sleep:
- btrfs_tree_read_lock()
- btrfs_tree_lock()

Sometimes we may need to look into the concurrency picture of the fs.
For that case, we need the execution time of above two functions and the
owner of @eb.

Here we introduce a trace events for user space tools like bcc, to get
the execution time of above two functions, and get detailed owner info
where eBPF code can't.

All the overhead is hidden behind the trace events, so if events are not
enabled, there is no overhead.

These trace events also output bytenr and generation, allow them to be
pared with unlock events to pin down deadlock.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2019-04-29 19:02:43 +02:00
..
tests btrfs: inode: Verify inode mode to avoid NULL pointer dereference 2019-04-29 19:02:32 +02:00
acl.c Btrfs: setup a nofs context for memory allocation at __btrfs_set_acl 2019-02-25 14:13:17 +01:00
async-thread.c btrfs: simplify workqueue name when allocating 2019-02-25 14:13:24 +01:00
async-thread.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
backref.c btrfs: use BUG() instead of BUG_ON(1) 2019-04-29 19:02:28 +02:00
backref.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
btrfs_inode.h btrfs: use common file type conversion 2019-04-29 19:02:29 +02:00
check-integrity.c btrfs: Fix typos in comments and strings 2018-12-17 14:51:50 +01:00
check-integrity.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
compression.c btrfs: Use less confusing condition for uptodate parameter to btrfs_writepage_endio_finish_ordered 2019-04-29 19:02:24 +02:00
compression.h btrfs: change set_level() to bound the level passed in 2019-02-25 14:13:32 +01:00
ctree.c btrfs: get fs_info from trans in copy_for_split 2019-04-29 19:02:42 +02:00
ctree.h btrfs: get fs_info from trans in btrfs_write_dirty_block_groups 2019-04-29 19:02:40 +02:00
dedupe.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
delayed-inode.c btrfs: get fs_info from eb in btrfs_leaf_free_space 2019-04-29 19:02:30 +02:00
delayed-inode.h Btrfs: delayed-inode: use rb_first_cached for ins_root and del_root 2018-10-15 17:23:33 +02:00
delayed-ref.c btrfs: qgroup: Move reserved data accounting from btrfs_delayed_ref_head to btrfs_qgroup_extent_record 2019-02-25 14:13:39 +01:00
delayed-ref.h btrfs: qgroup: Move reserved data accounting from btrfs_delayed_ref_head to btrfs_qgroup_extent_record 2019-02-25 14:13:39 +01:00
dev-replace.c btrfs: get fs_info from trans in btrfs_run_dev_replace 2019-04-29 19:02:43 +02:00
dev-replace.h btrfs: get fs_info from trans in btrfs_run_dev_replace 2019-04-29 19:02:43 +02:00
dir-item.c btrfs: Remove root parameter from btrfs_insert_dir_item 2018-10-15 17:23:25 +02:00
disk-io.c btrfs: get fs_info from trans in btrfs_create_tree 2019-04-29 19:02:41 +02:00
disk-io.h btrfs: get fs_info from trans in btrfs_create_tree 2019-04-29 19:02:41 +02:00
export.c btrfs: Remove 'objectid' member from struct btrfs_root 2018-10-15 17:23:25 +02:00
export.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
extent_io.c btrfs: Implement find_first_clear_extent_bit 2019-04-29 19:02:38 +02:00
extent_io.h btrfs: Implement find_first_clear_extent_bit 2019-04-29 19:02:38 +02:00
extent_map.c btrfs: Optimize unallocated chunks discard 2019-04-29 19:02:38 +02:00
extent_map.h btrfs: Remove impossible condition from mergable_maps 2019-02-25 14:13:21 +01:00
extent-tree.c Btrfs: remove no longer used member num_dirty_bgs from transaction 2019-04-29 19:02:43 +02:00
file-item.c btrfs: Remove redundant inode argument from btrfs_add_ordered_sum 2019-04-29 19:02:40 +02:00
file.c Btrfs: fix data bytes_may_use underflow with fallocate due to failed quota reserve 2019-04-29 19:02:39 +02:00
free-space-cache.c btrfs: get fs_info from trans in btrfs_write_out_cache 2019-04-29 19:02:41 +02:00
free-space-cache.h btrfs: get fs_info from trans in btrfs_write_out_cache 2019-04-29 19:02:41 +02:00
free-space-tree.c btrfs: get fs_info from trans in btrfs_create_tree 2019-04-29 19:02:41 +02:00
free-space-tree.h btrfs: Remove fs_info argument from add_to_free_space_tree 2018-05-28 18:07:36 +02:00
inode-item.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
inode-map.c btrfs: prune unused includes 2018-08-06 13:12:43 +02:00
inode-map.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
inode.c btrfs: get fs_info from trans in btrfs_set_log_full_commit 2019-04-29 19:02:41 +02:00
ioctl.c btrfs: Perform locking/unlocking in btrfs_remap_file_range() 2019-04-29 19:02:29 +02:00
Kconfig btrfs: add SPDX header to Kconfig 2018-04-12 16:29:55 +02:00
locking.c btrfs: trace: Introduce trace events for sleepable tree lock 2019-04-29 19:02:43 +02:00
locking.h btrfs: merge btrfs_set_lock_blocking_rw with it's caller 2019-02-25 14:13:28 +01:00
lzo.c btrfs: change set_level() to bound the level passed in 2019-02-25 14:13:32 +01:00
Makefile btrfs: Remove custom crc32c init code 2018-03-26 15:09:39 +02:00
math.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
ordered-data.c btrfs: Remove redundant inode argument from btrfs_add_ordered_sum 2019-04-29 19:02:40 +02:00
ordered-data.h btrfs: Remove redundant inode argument from btrfs_add_ordered_sum 2019-04-29 19:02:40 +02:00
orphan.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
print-tree.c btrfs: get fs_info from eb in btrfs_leaf_free_space 2019-04-29 19:02:30 +02:00
print-tree.h btrfs: print-tree: debugging output enhancement 2018-04-20 19:18:16 +02:00
props.c btrfs: prop: open code btrfs_set_prop in inherit_prop 2019-04-29 19:02:35 +02:00
props.h btrfs: refactor btrfs_set_prop and add btrfs_set_prop_trans 2019-04-29 19:02:19 +02:00
qgroup.c btrfs: get fs_info from trans in btrfs_create_tree 2019-04-29 19:02:41 +02:00
qgroup.h btrfs: qgroup: Move reserved data accounting from btrfs_delayed_ref_head to btrfs_qgroup_extent_record 2019-02-25 14:13:39 +01:00
raid56.c for-5.1-rc2-tag 2019-03-26 10:32:13 -07:00
raid56.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
rcu-string.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
reada.c btrfs: dev-replace: open code trivial locking helpers 2018-12-17 14:51:45 +01:00
ref-verify.c btrfs: replace btrfs_set_lock_blocking_rw with appropriate helpers 2019-02-25 14:13:27 +01:00
ref-verify.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
relocation.c btrfs: Remove redundant inode argument from btrfs_add_ordered_sum 2019-04-29 19:02:40 +02:00
root-tree.c btrfs: Don't panic when we can't find a root key 2019-04-29 19:02:17 +02:00
scrub.c btrfs: scrub: return EAGAIN when fs is closing 2019-04-29 19:02:17 +02:00
send.c Btrfs: send, improve clone range 2019-04-29 19:02:35 +02:00
send.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
struct-funcs.c btrfs: prune unused includes 2018-08-06 13:12:43 +02:00
super.c btrfs: drop unused parameter in mount_subvol 2019-04-29 19:02:35 +02:00
sysfs.c btrfs: Add sysfs support for metadata_uuid feature 2018-12-17 14:51:37 +01:00
sysfs.h btrfs: drop extra enum initialization where using defaults 2018-12-17 14:51:43 +01:00
transaction.c Btrfs: remove no longer used member num_dirty_bgs from transaction 2019-04-29 19:02:43 +02:00
transaction.h Btrfs: remove no longer used member num_dirty_bgs from transaction 2019-04-29 19:02:43 +02:00
tree-checker.c btrfs: tree-checker: Remove comprehensive root owner check 2019-04-29 19:02:39 +02:00
tree-checker.h btrfs: get fs_info from eb in btrfs_check_chunk_valid 2019-04-29 19:02:39 +02:00
tree-defrag.c btrfs: open code now trivial btrfs_set_lock_blocking 2019-02-25 14:13:27 +01:00
tree-log.c btrfs: get fs_info from trans in btrfs_set_log_full_commit 2019-04-29 19:02:41 +02:00
tree-log.h btrfs: get fs_info from trans in btrfs_set_log_full_commit 2019-04-29 19:02:41 +02:00
ulist.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
ulist.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
uuid-tree.c btrfs: Turn an 'else if' into an 'else' in btrfs_uuid_tree_add 2019-04-29 19:02:19 +02:00
volumes.c btrfs: get fs_info from trans in btrfs_run_dev_stats 2019-04-29 19:02:43 +02:00
volumes.h btrfs: get fs_info from trans in btrfs_run_dev_stats 2019-04-29 19:02:43 +02:00
xattr.c btrfs: get fs_info from eb in btrfs_leaf_free_space 2019-04-29 19:02:30 +02:00
xattr.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
zlib.c btrfs: change set_level() to bound the level passed in 2019-02-25 14:13:32 +01:00
zstd.c btrfs: zstd: remove indirect calls for local functions 2019-04-29 19:02:18 +02:00