Public bug reported:

== Justification ==
There are some non-POSIX implementations in the test script, which will 
generate some noise in the test reports like:
  -e -n [1] Basic trace file check
  -e [PASS]

== Fix ==
* 4ce55a9c (selftests/ftrace: Replace \e with \033)
* 37fb665b (selftests/ftrace: Replace echo -e with printf)

These two patches can be cherry-picked into D/E

== Test ==
Tested on a P8 box with Disco, the patched test will print the report in a 
proper format:
[1] Basic trace file check      [PASS]
[2] Basic test for tracers      [PASS]

== Regression Potential ==
No regression is expected. This patchset just make sure this test comply with 
POSIX standard.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1828994

Title:
  POSIX fix for ftrace in ubuntu_kernel_selftests

Status in linux package in Ubuntu:
  New

Bug description:
  == Justification ==
  There are some non-POSIX implementations in the test script, which will 
generate some noise in the test reports like:
    -e -n [1] Basic trace file check
    -e [PASS]

  == Fix ==
  * 4ce55a9c (selftests/ftrace: Replace \e with \033)
  * 37fb665b (selftests/ftrace: Replace echo -e with printf)

  These two patches can be cherry-picked into D/E

  == Test ==
  Tested on a P8 box with Disco, the patched test will print the report in a 
proper format:
  [1] Basic trace file check    [PASS]
  [2] Basic test for tracers    [PASS]

  == Regression Potential ==
  No regression is expected. This patchset just make sure this test comply with 
POSIX standard.

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https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1828994/+subscriptions

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