Author: cem
Date: Tue Jul 12 21:57:05 2016
New Revision: 302686
URL: https://svnweb.freebsd.org/changeset/base/302686
Log:
ioat(4): Check ring links at grow/shrink in INVARIANTS
Modified:
head/sys/dev/ioat/ioat.c
Modified: head/sys/dev/ioat/ioat.c
==============================================================================
--- head/sys/dev/ioat/ioat.c Tue Jul 12 21:57:02 2016 (r302685)
+++ head/sys/dev/ioat/ioat.c Tue Jul 12 21:57:05 2016 (r302686)
@@ -1591,6 +1591,18 @@ ring_grow(struct ioat_softc *ioat, uint3
hw->next = next->hw_desc_bus_addr;
}
+#ifdef INVARIANTS
+ for (i = 0; i < newsize; i++) {
+ next = newring[(i + 1) & (newsize - 1)];
+ hw = newring[i & (newsize - 1)]->u.dma;
+
+ KASSERT(hw->next == next->hw_desc_bus_addr,
+ ("mismatch at i:%u (oldsize:%u); next=%p nextaddr=0x%lx"
+ " (tail:%u)", i, oldsize, next, next->hw_desc_bus_addr,
+ tail));
+ }
+#endif
+
free(ioat->ring, M_IOAT);
ioat->ring = newring;
ioat->ring_size_order = oldorder + 1;
@@ -1657,6 +1669,18 @@ ring_shrink(struct ioat_softc *ioat, uin
next = newring[(ioat->tail + newsize) & (newsize - 1)];
hw->next = next->hw_desc_bus_addr;
+#ifdef INVARIANTS
+ for (i = 0; i < newsize; i++) {
+ next = newring[(i + 1) & (newsize - 1)];
+ hw = newring[i & (newsize - 1)]->u.dma;
+
+ KASSERT(hw->next == next->hw_desc_bus_addr,
+ ("mismatch at i:%u (newsize:%u); next=%p nextaddr=0x%lx "
+ "(tail:%u)", i, newsize, next, next->hw_desc_bus_addr,
+ ioat->tail));
+ }
+#endif
+
free(ioat->ring, M_IOAT);
ioat->ring = newring;
ioat->ring_size_order = oldorder - 1;
_______________________________________________
svn-src-all@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
