[turbolizer] Add support for showing perf profiling information.

[turbolizer] Add support for showing perf profiling information.

perf-turbo.py merges a perf data file and a turbofan trace file into a
single json object which can then be piped to a file and uploaded to
turbolizer to display the profiling data in the disassembly. With the
changes, turbolizer now shows the event counts for instruction in
percentage form and with heatmap-stype colouring. Multiple different
events can be recorded at once with a new drop-down menu to select which
event to view the counts of. The documentation has been updated with
instructions. Using the script is optional and turbolizer retains
previous functionality if a trace without profiling data is uploaded.

BUG=None

Committed: https://crrev.com/286e2b14a51c2ffcc610c0faa78443dda5625da1
Cr-Commit-Position: refs/heads/master@{#38124}

[alegil02, 2016-07-22 13:07:38]

alexander.gilday2@arm.com changed reviewers:
+ danno@chromium.org

[alegil02, 2016-07-27 10:16:59]

On 2016/07/22 13:07:39, alegil02 wrote:

Some slight formatting modifications and minor changes, along with a rebase onto
master. PTAL.

[danno, 2016-07-27 10:40:03]

Almost there...

https://codereview.chromium.org/2174803002/diff/20001/tools/turbolizer/perf-t...
File tools/turbolizer/perf-turbo.py (right):

https://codereview.chromium.org/2174803002/diff/20001/tools/turbolizer/perf-t...
tools/turbolizer/perf-turbo.py:1: # Copyright 2016 the V8 project authors. All
rights reserved.
Please move this file up a directory into the "tools" directory and rename it to
turbolizer-perf.py

[alegil02, 2016-07-27 10:46:20]

Made the requested changes, PTAL.

[danno, 2016-07-28 08:45:42]

lgtm with a nit.

https://codereview.chromium.org/2174803002/diff/40001/tools/turbolizer/turbo-...
File tools/turbolizer/turbo-visualizer.css (right):

https://codereview.chromium.org/2174803002/diff/40001/tools/turbolizer/turbo-...
tools/turbolizer/turbo-visualizer.css:285: 
nit: Please remove this stray change.

[alegil02, 2016-07-28 09:10:01]

Ah probably appeared from merging style changes in other patches. Thanks.

[alegil02, 2016-07-28 09:10:05]

The CQ bit was checked by alexander.gilday2@arm.com

[alegil02, 2016-07-28 09:10:06]

The patchset sent to the CQ was uploaded after l-g-t-m from danno@chromium.org
Link to the patchset: https://codereview.chromium.org/2174803002/#ps60001
(title: "[turbolizer] Add support for showing perf profiling information.")

[commit-bot: I haz the power, 2016-07-28 09:10:16]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-28 09:39:27]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2016-07-28 09:42:49]

Description was changed from

==========
[turbolizer] Add support for showing perf profiling information.

perf-turbo.py merges a perf data file and a turbofan trace file into a
single json object which can then be piped to a file and uploaded to
turbolizer to display the profiling data in the disassembly. With the
changes, turbolizer now shows the event counts for instruction in
percentage form and with heatmap-stype colouring. Multiple different
events can be recorded at once with a new drop-down menu to select which
event to view the counts of. The documentation has been updated with
instructions. Using the script is optional and turbolizer retains
previous functionality if a trace without profiling data is uploaded.

BUG=None
==========

to

==========
[turbolizer] Add support for showing perf profiling information.

perf-turbo.py merges a perf data file and a turbofan trace file into a
single json object which can then be piped to a file and uploaded to
turbolizer to display the profiling data in the disassembly. With the
changes, turbolizer now shows the event counts for instruction in
percentage form and with heatmap-stype colouring. Multiple different
events can be recorded at once with a new drop-down menu to select which
event to view the counts of. The documentation has been updated with
instructions. Using the script is optional and turbolizer retains
previous functionality if a trace without profiling data is uploaded.

BUG=None

Committed: https://crrev.com/286e2b14a51c2ffcc610c0faa78443dda5625da1
Cr-Commit-Position: refs/heads/master@{#38124}
==========

[commit-bot: I haz the power, 2016-07-28 09:42:50]

Patchset 4 (id:??) landed as
https://crrev.com/286e2b14a51c2ffcc610c0faa78443dda5625da1
Cr-Commit-Position: refs/heads/master@{#38124}