Linux perf support - fix debug info.

Linux perf support - fix debug info.

This fixes support for debug info in perf. Thanks to Stephane Eranian for
identifying the problem - debug info event has to be emitted before the
code load event. It also seems that perf does not yet support the shorthand
for repeated source files in the debug info entry ("\xff\0"), so I changed
it to always write the script name.

Committed: https://crrev.com/e11b5f7ab5d01f3e54f6de90bfe7c58497dc6161
Cr-Commit-Position: refs/heads/master@{#35092}

[Jarin, 2016-03-29 06:57:13]

Description was changed from

==========
Linux perf support - fix debug info.

This fixes support for debug info in perf. Thanks to Stephane Eranian for
identifying the problem - debug info event has to be emitted before the
code load event. It also seems that perf does not yet support the shorthand
for repeated source files in the debug info entry ("\xff\0"), so I changed
it to always write the script name.
==========

to

==========
Linux perf support - fix debug info.

This fixes support for debug info in perf. Thanks to Stephane Eranian for
identifying the problem - debug info event has to be emitted before the
code load event. It also seems that perf does not yet support the shorthand
for repeated source files in the debug info entry ("\xff\0"), so I changed
it to always write the script name.
==========

[Jarin, 2016-03-29 06:57:13]

jarin@chromium.org changed reviewers:
+ bmeurer@chromium.org

[Jarin, 2016-03-29 06:57:28]

Could you take a look, please?

[Benedikt Meurer, 2016-03-29 06:58:21]

lgtm

[Jarin, 2016-03-29 07:18:26]

The CQ bit was checked by jarin@chromium.org

[commit-bot: I haz the power, 2016-03-29 07:18:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1843563002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1843563002/1

[commit-bot: I haz the power, 2016-03-29 07:29:36]

Description was changed from

==========
Linux perf support - fix debug info.

This fixes support for debug info in perf. Thanks to Stephane Eranian for
identifying the problem - debug info event has to be emitted before the
code load event. It also seems that perf does not yet support the shorthand
for repeated source files in the debug info entry ("\xff\0"), so I changed
it to always write the script name.
==========

to

==========
Linux perf support - fix debug info.

This fixes support for debug info in perf. Thanks to Stephane Eranian for
identifying the problem - debug info event has to be emitted before the
code load event. It also seems that perf does not yet support the shorthand
for repeated source files in the debug info entry ("\xff\0"), so I changed
it to always write the script name.
==========

[commit-bot: I haz the power, 2016-03-29 07:29:37]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-29 07:29:56]

Description was changed from

==========
Linux perf support - fix debug info.

This fixes support for debug info in perf. Thanks to Stephane Eranian for
identifying the problem - debug info event has to be emitted before the
code load event. It also seems that perf does not yet support the shorthand
for repeated source files in the debug info entry ("\xff\0"), so I changed
it to always write the script name.
==========

to

==========
Linux perf support - fix debug info.

This fixes support for debug info in perf. Thanks to Stephane Eranian for
identifying the problem - debug info event has to be emitted before the
code load event. It also seems that perf does not yet support the shorthand
for repeated source files in the debug info entry ("\xff\0"), so I changed
it to always write the script name.

Committed: https://crrev.com/e11b5f7ab5d01f3e54f6de90bfe7c58497dc6161
Cr-Commit-Position: refs/heads/master@{#35092}
==========

[commit-bot: I haz the power, 2016-03-29 07:29:57]

Patchset 1 (id:??) landed as
https://crrev.com/e11b5f7ab5d01f3e54f6de90bfe7c58497dc6161
Cr-Commit-Position: refs/heads/master@{#35092}