38a846d47f
Enhance the call graph to display IPC information if it is available.
Committer testing:
[acme@quaco adrian.hunter]$ python ~acme/libexec/perf-core/scripts/python/exported-sql-viewer.py ~/c/adrian.hunter/simple-retpoline.db
Reports -> Context Sensitive Callgraph, then expand a few trees, then
select with the mouse and press control+C:
Call Path Object Count Time(ns) Time(%) Insn Insn Cyc Cyc IPC Branch Branch
▼ simple-retpolin Cnt Cnt(%) Cnt Cnt(%) Cnt Cnt(%)
▼ 23003:23003
▼ _start ld-2.28.so 1 218295 100.0 127746 100.0 207320 100.0 0.62 13046 100.0
▶ unknown unknown 1 3202 1.5 0 0.0 0 0.0 0 1 0.0
▶ _dl_start ld-2.28.so 1 188471 86.3 123394 96.6 180007 86.8 0.69 12529 96.0
▶ _dl_init ld-2.28.so 1 13406 6.1 3207 2.5 14868 7.2 0.22 327 2.5
▼ _start simple-retpoline 1 12899 5.9 1142 0.9 11561 5.6 0.10 184 1.4
▶ unknown unknown 1 846 6.6 0 0.0 0 0.0 0 1 0.5
▼ __libc_start_main libc-2.28.so 1 11621 90.1 1129 98.9 10350 89.5 0.11 181 98.4
▶ __cxa_atexit libc-2.28.so 1 2302 19.8 101 8.9 1817 17.6 0.06 13 7.2
▶ __libc_csu_init simple-retpoline 1 121 1.0 43 3.8 340 3.3 0.13 8 4.4
▼ _setjmp libc-2.28.so 1 74 0.6 46 4.1 206 2.0 0.22 4 2.2
▼ __sigsetjmp libc-2.28.so 1 74 100.0 46 100.0 206 100.0 0.22 3 75.0
▶ __sigjmp_save libc-2.28.so 1 0 0.0 0 0.0 0 0.0 0 1 33.3
▼ main simple-retpoline 1 44 0.4 23 2.0 126 1.2 0.18 12 6.6
▼ foo simple-retpoline 2 44 100.0 23 100.0 126 100.0 0.18 10 83.3
bar simple-retpoline 2 22 50.0 6 26.1 61 48.4 0.10 2 20.0
▶ exit libc-2.28.so 1 9029 77.7 878 77.8 7765 75.0 0.11 139 76.8
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190520113728.14389-21-adrian.hunter@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.