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-rw-r--r--src/svm/svm_fifo.h16
1 files changed, 11 insertions, 5 deletions
diff --git a/src/svm/svm_fifo.h b/src/svm/svm_fifo.h
index f32ef41da7d..fe21de476d7 100644
--- a/src/svm/svm_fifo.h
+++ b/src/svm/svm_fifo.h
@@ -133,25 +133,31 @@ svm_fifo_newest_ooo_segment (svm_fifo_t * f)
}
always_inline u32
-ooo_segment_distance_to_tail (svm_fifo_t * f, u32 a)
+ooo_segment_distance_from_tail (svm_fifo_t * f, u32 pos)
{
/* Ambiguous. Assumption is that ooo segments don't touch tail */
- if (a == f->tail && f->tail == f->head)
+ if (PREDICT_FALSE (pos == f->tail && f->tail == f->head))
return f->nitems;
- return ((f->nitems + a - f->tail) % f->nitems);
+ return (((f->nitems + pos) - f->tail) % f->nitems);
+}
+
+always_inline u32
+ooo_segment_distance_to_tail (svm_fifo_t * f, u32 pos)
+{
+ return (((f->nitems + f->tail) - pos) % f->nitems);
}
always_inline u32
ooo_segment_offset (svm_fifo_t * f, ooo_segment_t * s)
{
- return ooo_segment_distance_to_tail (f, s->start);
+ return ooo_segment_distance_from_tail (f, s->start);
}
always_inline u32
ooo_segment_end_offset (svm_fifo_t * f, ooo_segment_t * s)
{
- return ooo_segment_distance_to_tail (f, s->start) + s->length;
+ return ooo_segment_distance_from_tail (f, s->start) + s->length;
}
always_inline u32