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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-01-05 15:33:32 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-01-11 16:48:01 -0300 |
| commit | 355637717d575f14169954c3ed31536d45778f08 (patch) | |
| tree | e8a5b2d77fe882a2a50ab096900770bd0e7cd71a /tools/perf/perf.c | |
| parent | 7d132caaf9392853ad637c8e6e53333cbeb99aa5 (diff) | |
| download | blackbird-obmc-linux-355637717d575f14169954c3ed31536d45778f08.tar.gz blackbird-obmc-linux-355637717d575f14169954c3ed31536d45778f08.zip | |
perf kallsyms: Introduce tool to look for extended symbol information on the running kernel
Its similar to doing grep on a /proc/kallsyms, but it also shows extra
information like the path to the kernel module and the unrelocated
addresses in it, to help in diagnosing problems.
It is also helps demonstrate the use of the symbols routines so that
tool writers can use them more effectively.
Using it:
$ perf kallsyms e1000_xmit_frame netif_rx usb_stor_set_xfer_buf
e1000_xmit_frame: [e1000e] /lib/modules/4.9.0+/kernel/drivers/net/ethernet/intel/e1000e/e1000e.ko 0xffffffffc046fc10-0xffffffffc0470bb0 (0x19c80-0x1ac20)
netif_rx: [kernel] [kernel.kallsyms] 0xffffffff916f03a0-0xffffffff916f0410 (0xffffffff916f03a0-0xffffffff916f0410)
usb_stor_set_xfer_buf: [usb_storage] /lib/modules/4.9.0+/kernel/drivers/usb/storage/usb-storage.ko 0xffffffffc057aea0-0xffffffffc057af19 (0xf10-0xf89)
$
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-79bk9pakujn4l4vq0f90klv3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/perf.c')
| -rw-r--r-- | tools/perf/perf.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/perf.c b/tools/perf/perf.c index aa23b3347d6b..13c8a7db055e 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -47,6 +47,7 @@ static struct cmd_struct commands[] = { { "diff", cmd_diff, 0 }, { "evlist", cmd_evlist, 0 }, { "help", cmd_help, 0 }, + { "kallsyms", cmd_kallsyms, 0 }, { "list", cmd_list, 0 }, { "record", cmd_record, 0 }, { "report", cmd_report, 0 }, |
