[yocto] [PATCH 0/1] [meta-realtime] Add rt-app, schedtool, define core-image-realtime, and append recipies-kernel

[Insop Song]

meta-realtime layer for testing sched_deadline and other real-time applications

Add rt-app, schedtool, define core-image-realtime, and append recipies-kernel

*applications tested are shown below:

1. rt-app
- "rt-app" is a test application that starts multiple periodic threads
  in order to simulate a real-time periodic load

- run example

  root at qemux86:~# rt-app -t 100000:35000:d -D 1
  [rt-app] <notice> [0] Using SCHED_DEADLINE policy:
  [rt-app] <notice> [0] starting thread with period: 100000, exec:
  35000,deadline: 100000, priority: 10
  [rt-app] <notice> [0] Locking pages in memory
  idx	period	min_et	max_et	rel_st	start		end
  deadline	dur.	slack	Budget	Used Budget
  0	100000	35000	35000	64705	305724113	305759126
  305824105	35013	64979
  ...
  0	100000	35000	35000	965099	306624507	306659526
  306724105	35019	64578
  [rt-app] <notice> [0] Exiting.

2. schedtool
- scheduler test tool
- run example
  root at qemux86:~# schedtool -E -t 10000:100000 -a 0 -e yes > /dev/null&
  root at qemux86:~# schedtool -E -t 30000:100000 -a 0 -e yes > /dev/null&
  root at qemux86:~# jobs
  [1]-  Running                 schedtool -E -t 10000:100000 -a 0 -e yes
  > /dev/null &
  [2]+  Running                 schedtool -E -t 30000:100000 -a 0 -e yes
  > /dev/null &

  $ top
  Mem: 33616K used, 84308K free, 0K shrd, 2684K buff, 13904K cached
  CPU:  37% usr   5% sys   0% nic  56% idle   0% io   0% irq   0% sirq
  Load average: 911.65 428.84 84.32 35501/62 715
  PID  PPID USER     STAT   VSZ %VSZ %CPU COMMAND
  714   688 root     R     2352   2%  28% yes
  713   688 root     R     2352   2%   9% yes
  715   688 root     R     2724   2%   4% top

Insop Song (1):
  Add rt-app, schedtool, define core-image-realtime, and append
    recipies-kernel

 recipes-extended/images/core-image-realtime.bb     |   12 +++++++++
 recipes-kernel/linux/linux-yocto_3.8.bbappend      |    9 +++++++
 ...adline-as-a-default-to-go-around-yocto-bu.patch |   26 ++++++++++++++++++
 recipes-tools/rt-app/rt-app.bb                     |   28 ++++++++++++++++++++
 recipes-tools/schedtool-dl/schedtool-dl.bb         |   23 ++++++++++++++++
 5 files changed, 98 insertions(+)
 create mode 100644 recipes-extended/images/core-image-realtime.bb
 create mode 100644 recipes-kernel/linux/linux-yocto_3.8.bbappend
 create mode 100644 recipes-tools/rt-app/files/0001-set-with-deadline-as-a-default-to-go-around-yocto-bu.patch
 create mode 100644 recipes-tools/rt-app/rt-app.bb
 create mode 100644 recipes-tools/schedtool-dl/schedtool-dl.bb

-- 
1.7.9.5