rtems - RTEMS Kernel, file-systems, drivers, BSPs, samples, and testsuite.

	Commit message (Collapse)	Author	Age	Files	Lines
*	score: Per-CPU thread dispatch disable level	Sebastian Huber	2013-08-09	1	-0/+7
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Use a per-CPU thread dispatch disable level. So instead of one global thread dispatch disable level we have now one instance per processor. This is a major performance improvement for SMP. On non-SMP configurations this may simplifiy the interrupt entry/exit code. The giant lock is still present, but it is now decoupled from the thread dispatching in _Thread_Dispatch(), _Thread_Handler(), _Thread_Restart_self() and the interrupt entry/exit. Access to the giant lock is now available via _Giant_Acquire() and _Giant_Release(). The giant lock is still implicitly acquired via _Thread_Dispatch_decrement_disable_level(). The giant lock is only acquired for high-level operations in interrupt handlers (e.g. release of a semaphore, sending of an event). As a side-effect this change fixes the lost thread dispatch necessary indication bug in _Thread_Dispatch(). A per-CPU thread dispatch disable level greatly simplifies the SMP support for the interrupt entry/exit code since no spin locks have to be acquired in this area. It is only necessary to get the current processor index and use this to calculate the address of the own per-CPU control. This reduces the interrupt latency considerably. All elements for the interrupt entry/exit code are now part of the Per_CPU_Control structure: thread dispatch disable level, ISR nest level and thread dispatch necessary. Nothing else is required (except CPU port specific stuff like on SPARC).
*	smp: Generalize _Thread_Start_multitasking()	Sebastian Huber	2013-08-05	1	-1/+1
\| \| \| \| \| \| \| \| \| \|	Add context parameter to _Thread_Start_multitasking() and use this function in rtems_smp_secondary_cpu_initialize(). This avoids duplication of code. Fix missing floating point context initialization in rtems_smp_secondary_cpu_initialize(). Now performed via _Thread_Start_multitasking().
*	score: Rename tod.h to todimpl.h	Sebastian Huber	2013-08-01	1	-1/+1
\|
*	score: Add and use _Thread_Update_cpu_time_used()	Sebastian Huber	2013-08-01	1	-0/+19
\| \| \| \|	Fix _times().
*	smp: Delete _SMP_Request_other_cores_to_dispatch()	Sebastian Huber	2013-07-30	1	-1/+14
\| \| \| \| \|	Use an event triggered unicast to inform remote processors about a necessary thread dispatch instead.
*	score: Move _Thread_Dispatch_if_necessary()	Sebastian Huber	2013-07-30	1	-26/+0
\| \| \| \|	Rename to _RTEMS_Tasks_Dispatch_if_necessary().
*	score: Add and use _Thread_Signal_notification()	Sebastian Huber	2013-07-30	1	-0/+7
\|
*	score: Create object implementation header	Sebastian Huber	2013-07-26	1	-0/+1
\| \| \| \| \| \|	Move implementation specific parts of object.h and object.inl into new header file objectimpl.h. The object.h contains now only the application visible API.
*	score: Create states implementation header	Sebastian Huber	2013-07-26	1	-0/+1
\| \| \| \| \| \|	Move implementation specific parts of states.h and states.inl into new header file statesimpl.h. The states.h contains now only the application visible API.
*	score: Create thread implementation header	Sebastian Huber	2013-07-26	1	-0/+691
	Move implementation specific parts of thread.h and thread.inl into new header file threadimpl.h. The thread.h contains now only the application visible API. Remove superfluous header file includes from various files.