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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2017-11-09 16:21:37 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2017-11-20 08:36:49 +0100 |
| commit | c597fb166e05d315ce5da29c0a43a09992772dad (patch) | |
| tree | 627d3f248020e0a292fe7dcb2505cf4d90957ae7 /testsuites/smptests | |
| parent | bsps/powerpc: Fix PPC_EXC_CONFIG_USE_FIXED_HANDLER (diff) | |
| download | rtems-c597fb166e05d315ce5da29c0a43a09992772dad.tar.bz2 | |
score: Optimize scheduler priority updates
Thread priority changes may append or prepend the thread to its priority
group on the scheduler ready queue. Previously, a separate priority
value and a prepend-it flag in the scheduler node were used to propagate
a priority change to the scheduler.
Now, use an append-it bit in the priority control and reduce the plain
priority value to 63 bits.
This change leads to a significant code size reduction (about 25%) of
the SMP schedulers. The negligible increase of the standard priority
scheduler is due to some additional shift operations
(SCHEDULER_PRIORITY_MAP() and SCHEDULER_PRIORITY_UNMAP()).
Before:
text filename
136 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleblock.o
464 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimplechangepriority.o
24 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimple.o
108 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleschedule.o
292 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleunblock.o
264 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleyield.o
text filename
280 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityblock.o
488 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerprioritychangepriority.o
200 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriority.o
164 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityschedule.o
328 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityunblock.o
200 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityyield.o
text filename
24112 arm-rtems5/c/imx7/cpukit/score/src/libscore_a-scheduleredfsmp.o
text filename
37204 sparc-rtems5/c/gr740/cpukit/score/src/libscore_a-scheduleredfsmp.o
text filename
42236 powerpc-rtems5/c/qoriq_e6500_32/cpukit/score/src/libscore_a-scheduleredfsmp.o
After:
text filename
136 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleblock.o
272 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimplechangepriority.o
24 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimple.o
108 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleschedule.o
292 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleunblock.o
264 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulersimpleyield.o
text filename
280 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityblock.o
488 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerprioritychangepriority.o
208 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriority.o
164 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityschedule.o
332 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityunblock.o
200 sparc-rtems5/c/erc32/cpukit/score/src/libscore_a-schedulerpriorityyield.o
text filename
18860 arm-rtems5/c/imx7/cpukit/score/src/libscore_a-scheduleredfsmp.o
text filename
28520 sparc-rtems5/c/gr740/cpukit/score/src/libscore_a-scheduleredfsmp.o
text filename
32664 powerpc-rtems5/c/qoriq_e6500_32/cpukit/score/src/libscore_a-scheduleredfsmp.o
Diffstat (limited to 'testsuites/smptests')
| -rw-r--r-- | testsuites/smptests/smpscheduler01/smpscheduler01.doc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/testsuites/smptests/smpscheduler01/smpscheduler01.doc b/testsuites/smptests/smpscheduler01/smpscheduler01.doc index def7dac128..a881fc0fc4 100644 --- a/testsuites/smptests/smpscheduler01/smpscheduler01.doc +++ b/testsuites/smptests/smpscheduler01/smpscheduler01.doc @@ -4,7 +4,7 @@ test set name: smpscheduler01 directives: - - _Scheduler_SMP_Enqueue_ordered() + - _Scheduler_SMP_Enqueue() - _Scheduler_SMP_Block() concepts: |