readme

fsmlabs的real time linux的内核

This is an example of creating a new rt-thread from within rt-context - it
requires a patch to the original scheduler/rtl_sched.c (found in 
rtl_sched.patch) basically this patch replaces the calls to 
kmalloc(...,GFP_KERNEL) by kmalloc(...,GFP_ATOMIC) so that they
are safe for rt-context (they can thoug fail !)

Alternatively (and without patching the existing rtlinux scheduler) you could
preallocate a stack for the new thread (or kmalloc it with the risk of failing
in rt-context) and fill in the thread structure, that is basically what 
pthread_create does just it allocates memory dynamically so it would fail 
in case you call it without patching rtl_sched.c. Note that the method of 
assigning a thread structure with prealocated memory has the advantage that 
it will not fail (the memory is prealocated so you don't need to check) but 
it does not allow using the common API.

new_thread.c   example using pthread_create in rt-context REQUIRES the patch
stack_ptr.c    example filling in the attr struct DOES NOT REQUIRE the patch

comments/suggestions/problem reports to [e-mail]

thx !
hofrat