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 |
|---|---|---|
| Kconfig | -rw-r--r-- | 7.7 KB |
| Makefile | -rw-r--r-- | 1.1 KB |
| asn1.c | -rw-r--r-- | 1.4 KB |
| cached_dir.c | -rw-r--r-- | 13.0 KB |
| cached_dir.h | -rw-r--r-- | 2.1 KB |
| cifs_debug.c | -rw-r--r-- | 30.3 KB |
| cifs_debug.h | -rw-r--r-- | 4.3 KB |
| cifs_dfs_ref.c | -rw-r--r-- | 9.6 KB |
| cifs_fs_sb.h | -rw-r--r-- | 3.4 KB |
| cifs_ioctl.h | -rw-r--r-- | 3.5 KB |
| cifs_spnego.c | -rw-r--r-- | 5.7 KB |
| cifs_spnego.h | -rw-r--r-- | 927 bytes |
| cifs_spnego_negtokeninit.asn1 | -rw-r--r-- | 698 bytes |
| cifs_swn.c | -rw-r--r-- | 16.9 KB |
| cifs_swn.h | -rw-r--r-- | 1.4 KB |
| cifs_unicode.c | -rw-r--r-- | 15.7 KB |
| cifs_unicode.h | -rw-r--r-- | 9.6 KB |
| cifs_uniupr.h | -rw-r--r-- | 11.9 KB |
| cifsacl.c | -rw-r--r-- | 47.8 KB |
| cifsacl.h | -rw-r--r-- | 6.2 KB |
| cifsencrypt.c | -rw-r--r-- | 19.0 KB |
| cifsfs.c | -rw-r--r-- | 49.4 KB |
| cifsfs.h | -rw-r--r-- | 6.3 KB |
| cifsglob.h | -rw-r--r-- | 73.8 KB |
| cifspdu.h | -rw-r--r-- | 82.5 KB |
| cifsproto.h | -rw-r--r-- | 29.4 KB |
| cifsroot.c | -rw-r--r-- | 2.1 KB |
| cifssmb.c | -rw-r--r-- | 172.9 KB |
| connect.c | -rw-r--r-- | 126.5 KB |
| dfs_cache.c | -rw-r--r-- | 39.8 KB |
| dfs_cache.h | -rw-r--r-- | 2.9 KB |
| dir.c | -rw-r--r-- | 21.9 KB |
| dns_resolve.c | -rw-r--r-- | 2.3 KB |
| dns_resolve.h | -rw-r--r-- | 472 bytes |
| export.c | -rw-r--r-- | 1.6 KB |
| file.c | -rw-r--r-- | 134.4 KB |
| fs_context.c | -rw-r--r-- | 46.9 KB |
| fs_context.h | -rw-r--r-- | 7.1 KB |
| fscache.c | -rw-r--r-- | 6.2 KB |
| fscache.h | -rw-r--r-- | 4.3 KB |
| inode.c | -rw-r--r-- | 82.1 KB |
| ioctl.c | -rw-r--r-- | 13.4 KB |
| link.c | -rw-r--r-- | 15.2 KB |
| misc.c | -rw-r--r-- | 35.2 KB |
| netlink.c | -rw-r--r-- | 2.5 KB |
| netlink.h | -rw-r--r-- | 326 bytes |
| netmisc.c | -rw-r--r-- | 39.4 KB |
| nterr.c | -rw-r--r-- | 32.9 KB |
| nterr.h | -rw-r--r-- | 29.4 KB |
| ntlmssp.h | -rw-r--r-- | 6.0 KB |
| readdir.c | -rw-r--r-- | 34.0 KB |
| rfc1002pdu.h | -rw-r--r-- | 2.1 KB |
| sess.c | -rw-r--r-- | 49.0 KB |
| smb1ops.c | -rw-r--r-- | 35.6 KB |
| smb2file.c | -rw-r--r-- | 10.2 KB |
| smb2glob.h | -rw-r--r-- | 1.2 KB |
| smb2inode.c | -rw-r--r-- | 22.5 KB |
| smb2maperror.c | -rw-r--r-- | 126.6 KB |
| smb2misc.c | -rw-r--r-- | 26.5 KB |
| smb2ops.c | -rw-r--r-- | 160.5 KB |
| smb2pdu.c | -rw-r--r-- | 157.3 KB |
| smb2pdu.h | -rw-r--r-- | 10.3 KB |
| smb2proto.h | -rw-r--r-- | 13.8 KB |
| smb2status.h | -rw-r--r-- | 105.7 KB |
| smb2transport.c | -rw-r--r-- | 22.6 KB |
| smbdirect.c | -rw-r--r-- | 70.9 KB |
| smbdirect.h | -rw-r--r-- | 8.4 KB |
| smbencrypt.c | -rw-r--r-- | 2.2 KB |
| smberr.h | -rw-r--r-- | 6.8 KB |
| trace.c | -rw-r--r-- | 195 bytes |
| trace.h | -rw-r--r-- | 27.5 KB |
| transport.c | -rw-r--r-- | 47.5 KB |
| unc.c | -rw-r--r-- | 1.4 KB |
| winucase.c | -rw-r--r-- | 36.2 KB |
| xattr.c | -rw-r--r-- | 13.0 KB |
Computing file changes ...
