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epiphany: Delete CPU_UNROLL_ENQUEUE_PRIORITY

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Sebastian Huber
2015-10-07 09:13:23 +02:00
parent ba1ed5240b
commit 6959e663e4
1 changed files with 0 additions and 21 deletions
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21
cpukit/score/cpu/epiphany/rtems/score/cpu.h
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@@ -69,27 +69,6 @@ extern "C" {
#define CPU_INLINE_ENABLE_DISPATCH FALSE #define CPU_INLINE_ENABLE_DISPATCH FALSE
/*
* Should the body of the search loops in _Thread_queue_Enqueue_priority
* be unrolled one time? In unrolled each iteration of the loop examines
* two "nodes" on the chain being searched. Otherwise, only one node
* is examined per iteration.
*
* If TRUE, then the loops are unrolled.
* If FALSE, then the loops are not unrolled.
*
* The primary factor in making this decision is the cost of disabling
* and enabling interrupts (_ISR_Flash) versus the cost of rest of the
* body of the loop. On some CPUs, the flash is more expensive than
* one iteration of the loop body. In this case, it might be desirable
* to unroll the loop. It is important to note that on some CPUs, this
* code is the longest interrupt disable period in RTEMS. So it is
* necessary to strike a balance when setting this parameter.
*
*/
#define CPU_UNROLL_ENQUEUE_PRIORITY TRUE
/* /*
* Does RTEMS manage a dedicated interrupt stack in software? * Does RTEMS manage a dedicated interrupt stack in software?
* *