Adrian Hunter e39a12cbd2 perf tests: Add a test for time-utils
Test time ranges work as expected.

Committer testing:

  $ perf test "time utils"
  59: time utils                                            : Ok
  $ perf test -v "time utils"
  59: time utils                                            :
  --- start ---
  test child forked, pid 31711

  parse_nsec_time("0")
  0

  parse_nsec_time("1")
  1000000000

  parse_nsec_time("0.000000001")
  1

  parse_nsec_time("1.000000001")
  1000000001

  parse_nsec_time("123456.123456")
  123456123456000

  parse_nsec_time("1234567.123456789")
  1234567123456789

  parse_nsec_time("18446744073.709551615")
  18446744073709551615

  perf_time__parse_str("1234567.123456789,1234567.123456789")
  start time 1234567123456789, end time 1234567123456789

  perf_time__parse_str("1234567.123456789,1234567.123456790")
  start time 1234567123456789, end time 1234567123456790

  perf_time__parse_str("1234567.123456789,")
  start time 1234567123456789, end time 0

  perf_time__parse_str(",1234567.123456789")
  start time 0, end time 1234567123456789

  perf_time__parse_str("0,1234567.123456789")
  start time 0, end time 1234567123456789

  perf_time__parse_for_ranges("1234567.123456789,1234567.123456790")
  start time 1234567123456789, end time 1234567123456790

  perf_time__parse_for_ranges("10%/1")
  first_sample_time 7654321000000000 last_sample_time 7654321000000100
  start time 0: 7654321000000000, end time 0: 7654321000000009

  perf_time__parse_for_ranges("10%/2")
  first_sample_time 7654321000000000 last_sample_time 7654321000000100
  start time 0: 7654321000000010, end time 0: 7654321000000019

  perf_time__parse_for_ranges("10%/1,10%/2")
  first_sample_time 11223344000000000 last_sample_time 11223344000000100
  start time 0: 11223344000000000, end time 0: 11223344000000009
  start time 1: 11223344000000010, end time 1: 11223344000000019

  perf_time__parse_for_ranges("10%/1,10%/3,10%/10")
  first_sample_time 11223344000000000 last_sample_time 11223344000000100
  start time 0: 11223344000000000, end time 0: 11223344000000009
  start time 1: 11223344000000020, end time 1: 11223344000000029
  start time 2: 11223344000000090, end time 2: 11223344000000100

  test child finished with 0
  ---- end ----
  time utils: Ok
  $

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190604130017.31207-19-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-10 16:20:12 -03:00
…
2019-06-02 13:55:33 -07:00

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.
S
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