mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-01-02 13:05:42 -05:00
4b799a9b77
Other perf tool builtins already supported a DSO filter.
For example:
$ perf report --dsos a,b,c
which only considers symbols in these dsos.
Now the DSO filter is supported in 'perf script':
root@kbl-ppc:~# ./perf script --dsos "[kernel.kallsyms]"
perf 18123 [000] 6142863.075104: 1 cycles: ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
perf 18123 [000] 6142863.075107: 1 cycles: ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
perf 18123 [000] 6142863.075108: 10 cycles: ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
perf 18123 [000] 6142863.075109: 273 cycles: ffffffff9ca7730a native_write_msr+0xa ([kernel.kallsyms])
perf 18123 [000] 6142863.075110: 7684 cycles: ffffffff9ca3c9c0 native_sched_clock+0x50 ([kernel.kallsyms])
perf 18123 [000] 6142863.075112: 213017 cycles: ffffffff9d765a92 syscall_exit_to_user_mode+0x32 ([kernel.kallsyms])
perf 18123 [001] 6142863.075156: 1 cycles: ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
perf 18123 [001] 6142863.075158: 1 cycles: ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
perf 18123 [001] 6142863.075159: 17 cycles: ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
Committer testing:
$ perf script
ls 2364888 29303.010949: 1 cycles:u: ffffffffa4bbc6a9 [unknown] ([unknown])
ls 2364888 29303.010957: 1 cycles:u: ffffffffa429ef48 [unknown] ([unknown])
ls 2364888 29303.010961: 1 cycles:u: ffffffffa4260133 [unknown] ([unknown])
ls 2364888 29303.010964: 5 cycles:u: ffffffffa429efad [unknown] ([unknown])
ls 2364888 29303.010967: 41 cycles:u: ffffffffa42a4586 [unknown] ([unknown])
ls 2364888 29303.010972: 435 cycles:u: ffffffffa429efe0 [unknown] ([unknown])
ls 2364888 29303.010978: 5142 cycles:u: 7f9b95bc2abf __GI___tunables_init+0x11f (/usr/lib64/ld-2.32.so)
ls 2364888 29303.011006: 38551 cycles:u: ffffffffa4290f61 [unknown] ([unknown])
ls 2364888 29303.011486: 238234 cycles:u: 7f9b95bb7741 _dl_relocate_object+0xa71 (/usr/lib64/ld-2.32.so)
ls 2364888 29303.011937: 415870 cycles:u: 7f9b95a1c80e __strcoll_l+0xe (/usr/lib64/libc-2.32.so)
$
Before:
$ perf script --dsos /usr/lib64/libc-2.32.so |& head -5
Error: unknown option `dsos'
Usage: perf script [<options>]
or: perf script [<options>] record <script> [<record-options>] <command>
or: perf script [<options>] report <script> [script-args]
$
After:
$ perf script --dsos /usr/lib64/libc-2.32.so
ls 2364888 29303.011937: 415870 cycles:u: 7f9b95a1c80e __strcoll_l+0xe (/usr/lib64/libc-2.32.so)
$
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20210124232750.19170-2-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.