Revision 511e19b9e2112463c33a744ecb8a798056074408 authored by Namhyung Kim on 19 December 2022, 20:17:30 UTC, committed by Arnaldo Carvalho de Melo on 21 December 2022, 17:52:39 UTC
The -L/--lock-filter option is to filter only given locks. The locks
can be specified by address or name (if exists).
$ sudo ./perf lock record -a sleep 1
$ sudo ./perf lock con -l
contended total wait max wait avg wait address symbol
57 1.11 ms 42.83 us 19.54 us ffff9f4140059000
15 280.88 us 23.51 us 18.73 us ffffffff9d007a40 jiffies_lock
1 20.49 us 20.49 us 20.49 us ffffffff9d0d50c0 rcu_state
1 9.02 us 9.02 us 9.02 us ffff9f41759e9ba0
$ sudo ./perf lock con -L jiffies_lock,rcu_state
contended total wait max wait avg wait type caller
15 280.88 us 23.51 us 18.73 us spinlock tick_sched_do_timer+0x93
1 20.49 us 20.49 us 20.49 us spinlock __softirqentry_text_start+0xeb
$ sudo ./perf lock con -L ffff9f4140059000
contended total wait max wait avg wait type caller
38 779.40 us 42.83 us 20.51 us spinlock worker_thread+0x50
11 216.30 us 39.87 us 19.66 us spinlock queue_work_on+0x39
8 118.13 us 20.51 us 14.77 us spinlock kthread+0xe5
Committer testing:
# uname -a
Linux quaco 6.0.12-200.fc36.x86_64 #1 SMP PREEMPT_DYNAMIC Thu Dec 8 17:15:53 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
# perf lock record
^C[ perf record: Woken up 1 times to write data ]
# perf lock con -L jiffies_lock,rcu_state
contended total wait max wait avg wait type caller
# perf lock con
contended total wait max wait avg wait type caller
1 9.06 us 9.06 us 9.06 us spinlock call_timer_fn+0x24
# perf lock con -L call
ignore unknown symbol: call
contended total wait max wait avg wait type caller
1 9.06 us 9.06 us 9.06 us spinlock call_timer_fn+0x24
#
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Blake Jones <blakejones@google.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <song@kernel.org>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20221219201732.460111-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1 parent 529772c
| File | Mode | Size |
|---|---|---|
| 9p | ||
| adfs | ||
| affs | ||
| afs | ||
| autofs | ||
| befs | ||
| bfs | ||
| btrfs | ||
| cachefiles | ||
| ceph | ||
| cifs | ||
| coda | ||
| configfs | ||
| cramfs | ||
| crypto | ||
| debugfs | ||
| devpts | ||
| dlm | ||
| ecryptfs | ||
| efivarfs | ||
| efs | ||
| erofs | ||
| exfat | ||
| exportfs | ||
| ext2 | ||
| ext4 | ||
| f2fs | ||
| fat | ||
| freevxfs | ||
| fscache | ||
| fuse | ||
| gfs2 | ||
| hfs | ||
| hfsplus | ||
| hostfs | ||
| hpfs | ||
| hugetlbfs | ||
| iomap | ||
| isofs | ||
| jbd2 | ||
| jffs2 | ||
| jfs | ||
| kernfs | ||
| ksmbd | ||
| lockd | ||
| minix | ||
| netfs | ||
| nfs | ||
| nfs_common | ||
| nfsd | ||
| nilfs2 | ||
| nls | ||
| notify | ||
| ntfs | ||
| ntfs3 | ||
| ocfs2 | ||
| omfs | ||
| openpromfs | ||
| orangefs | ||
| overlayfs | ||
| proc | ||
| pstore | ||
| qnx4 | ||
| qnx6 | ||
| quota | ||
| ramfs | ||
| reiserfs | ||
| romfs | ||
| smbfs_common | ||
| squashfs | ||
| sysfs | ||
| sysv | ||
| tracefs | ||
| ubifs | ||
| udf | ||
| ufs | ||
| unicode | ||
| vboxsf | ||
| verity | ||
| xfs | ||
| zonefs | ||
| Kconfig | -rw-r--r-- | 9.8 KB |
| Kconfig.binfmt | -rw-r--r-- | 6.2 KB |
| Makefile | -rw-r--r-- | 4.5 KB |
| aio.c | -rw-r--r-- | 61.0 KB |
| anon_inodes.c | -rw-r--r-- | 8.1 KB |
| attr.c | -rw-r--r-- | 15.1 KB |
| bad_inode.c | -rw-r--r-- | 5.8 KB |
| binfmt_elf.c | -rw-r--r-- | 57.3 KB |
| binfmt_elf_fdpic.c | -rw-r--r-- | 43.4 KB |
| binfmt_elf_test.c | -rw-r--r-- | 2.7 KB |
| binfmt_flat.c | -rw-r--r-- | 25.8 KB |
| binfmt_misc.c | -rw-r--r-- | 17.4 KB |
| binfmt_script.c | -rw-r--r-- | 4.2 KB |
| buffer.c | -rw-r--r-- | 78.9 KB |
| char_dev.c | -rw-r--r-- | 16.6 KB |
| compat_binfmt_elf.c | -rw-r--r-- | 3.8 KB |
| coredump.c | -rw-r--r-- | 29.4 KB |
| d_path.c | -rw-r--r-- | 11.4 KB |
| dax.c | -rw-r--r-- | 54.5 KB |
| dcache.c | -rw-r--r-- | 87.6 KB |
| direct-io.c | -rw-r--r-- | 38.9 KB |
| drop_caches.c | -rw-r--r-- | 1.9 KB |
| eventfd.c | -rw-r--r-- | 12.2 KB |
| eventpoll.c | -rw-r--r-- | 65.0 KB |
| exec.c | -rw-r--r-- | 51.4 KB |
| fcntl.c | -rw-r--r-- | 23.3 KB |
| fhandle.c | -rw-r--r-- | 6.8 KB |
| file.c | -rw-r--r-- | 32.0 KB |
| file_table.c | -rw-r--r-- | 10.9 KB |
| filesystems.c | -rw-r--r-- | 6.5 KB |
| fs-writeback.c | -rw-r--r-- | 79.7 KB |
| fs_context.c | -rw-r--r-- | 17.7 KB |
| fs_parser.c | -rw-r--r-- | 10.7 KB |
| fs_pin.c | -rw-r--r-- | 1.9 KB |
| fs_struct.c | -rw-r--r-- | 3.4 KB |
| fs_types.c | -rw-r--r-- | 2.5 KB |
| fsopen.c | -rw-r--r-- | 10.9 KB |
| init.c | -rw-r--r-- | 6.1 KB |
| inode.c | -rw-r--r-- | 67.4 KB |
| internal.h | -rw-r--r-- | 7.1 KB |
| ioctl.c | -rw-r--r-- | 23.9 KB |
| kernel_read_file.c | -rw-r--r-- | 4.4 KB |
| libfs.c | -rw-r--r-- | 41.7 KB |
| locks.c | -rw-r--r-- | 75.7 KB |
| mbcache.c | -rw-r--r-- | 12.6 KB |
| mount.h | -rw-r--r-- | 4.0 KB |
| mpage.c | -rw-r--r-- | 18.8 KB |
| namei.c | -rw-r--r-- | 137.4 KB |
| namespace.c | -rw-r--r-- | 117.1 KB |
| no-block.c | -rw-r--r-- | 478 bytes |
| nsfs.c | -rw-r--r-- | 6.6 KB |
| open.c | -rw-r--r-- | 37.4 KB |
| pipe.c | -rw-r--r-- | 36.0 KB |
| pnode.c | -rw-r--r-- | 15.1 KB |
| pnode.h | -rw-r--r-- | 2.0 KB |
| posix_acl.c | -rw-r--r-- | 31.0 KB |
| proc_namespace.c | -rw-r--r-- | 8.1 KB |
| read_write.c | -rw-r--r-- | 40.5 KB |
| readdir.c | -rw-r--r-- | 13.8 KB |
| remap_range.c | -rw-r--r-- | 14.1 KB |
| select.c | -rw-r--r-- | 34.7 KB |
| seq_file.c | -rw-r--r-- | 25.7 KB |
| signalfd.c | -rw-r--r-- | 8.7 KB |
| splice.c | -rw-r--r-- | 38.7 KB |
| stack.c | -rw-r--r-- | 2.5 KB |
| stat.c | -rw-r--r-- | 22.2 KB |
| statfs.c | -rw-r--r-- | 9.7 KB |
| super.c | -rw-r--r-- | 45.3 KB |
| sync.c | -rw-r--r-- | 10.4 KB |
| sysctls.c | -rw-r--r-- | 809 bytes |
| timerfd.c | -rw-r--r-- | 13.9 KB |
| userfaultfd.c | -rw-r--r-- | 55.8 KB |
| utimes.c | -rw-r--r-- | 7.6 KB |
| xattr.c | -rw-r--r-- | 35.0 KB |
Computing file changes ...
