[rtems commit] smptests: Use priority ceiling for locked print
Sebastian Huber
sebh at rtems.org
Fri May 31 13:15:45 UTC 2013
Module: rtems
Branch: master
Commit: ac2bb464a5948ff0b3ae4bb5bd4434735e6c0e04
Changeset: http://git.rtems.org/rtems/commit/?id=ac2bb464a5948ff0b3ae4bb5bd4434735e6c0e04
Author: Sebastian Huber <sebastian.huber at embedded-brains.de>
Date: Fri May 31 13:56:56 2013 +0200
smptests: Use priority ceiling for locked print
In case the printf() blocks on a semaphore it was possible to end up in
a livelock.
---
testsuites/smptests/smp08/init.c | 2 +-
testsuites/support/src/locked_print.c | 3 ++-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/testsuites/smptests/smp08/init.c b/testsuites/smptests/smp08/init.c
index 1c03cec..8e8de7c 100644
--- a/testsuites/smptests/smp08/init.c
+++ b/testsuites/smptests/smp08/init.c
@@ -78,7 +78,7 @@ rtems_task Init(
sprintf(ch, "%02" PRId32, i );
status = rtems_task_create(
rtems_build_name( 'T', 'A', ch[0], ch[1] ),
- 1,
+ 2,
RTEMS_MINIMUM_STACK_SIZE,
RTEMS_DEFAULT_MODES,
RTEMS_DEFAULT_ATTRIBUTES,
diff --git a/testsuites/support/src/locked_print.c b/testsuites/support/src/locked_print.c
index 62e72bf..8a901c9 100644
--- a/testsuites/support/src/locked_print.c
+++ b/testsuites/support/src/locked_print.c
@@ -36,7 +36,8 @@ void locked_print_initialize(void)
rtems_build_name ('S', 'E', 'M', '1'),
1,
RTEMS_LOCAL |
- RTEMS_SIMPLE_BINARY_SEMAPHORE |
+ RTEMS_BINARY_SEMAPHORE |
+ RTEMS_PRIORITY_CEILING |
RTEMS_PRIORITY,
1,
&locked_print_semaphore
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