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Add some protection to the priority inheritance logic when sem_post() is called from an interrupt handler

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5060 42af7a65-404d-4744-a932-0658087f49c3
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patacongo 2012-08-28 14:40:12 +00:00
parent 6a0967ebc6
commit 968df0679c
1 changed files with 6 additions and 2 deletions
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8
configs/README.txt
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@ -323,13 +323,17 @@ defconfig -- This is a configuration file similar to the Linux
set to zero if priority inheritance is disabled OR if you
are only using semaphores as mutexes (only one holder) OR
if no more than two threads participate using a counting
semaphore.
semaphore. If defined, then this should be a relatively
large number because this is the total number of counts on
the total number of semaphores (like 64 or 100).
CONFIG_SEM_NNESTPRIO. If priority inheritance is enabled,
then this setting is the maximum number of higher priority
threads (minus 1) than can be waiting for another thread
to release a count on a semaphore. This value may be set
to zero if no more than one thread is expected to wait for
a semaphore.
a semaphore. If defined, then this should be a relatively
small number because this the number of maximumum of waiters
on one semaphore (like 4 or 8).
CONFIG_FDCLONE_DISABLE. Disable cloning of all file descriptors
by task_create() when a new task is started. If set, all
files/drivers will appear to be closed in the new task.