The patch titled
ixgb: fix cache miss due to miscalculation
has been removed from the -mm tree. Its filename is
ixgb-fix-cache-miss-due-to-miscalculation.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: ixgb: fix cache miss due to miscalculation
From: "Kok, Auke" <auke-jan.h.kok@xxxxxxxxx>
Reduce writeback threshold by 1. We were instructing the hardware to wait
until the 17th descriptor which went over the cache line limit.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@xxxxxxxxx>
Signed-off-by: Auke Kok <auke.jan.h.kok@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/net/ixgb/ixgb_main.c | 12 ++++++------
1 files changed, 6 insertions(+), 6 deletions(-)
diff -puN drivers/net/ixgb/ixgb_main.c~ixgb-fix-cache-miss-due-to-miscalculation drivers/net/ixgb/ixgb_main.c
--- a/drivers/net/ixgb/ixgb_main.c~ixgb-fix-cache-miss-due-to-miscalculation
+++ a/drivers/net/ixgb/ixgb_main.c
@@ -140,12 +140,12 @@ module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
/* some defines for controlling descriptor fetches in h/w */
-#define RXDCTL_WTHRESH_DEFAULT 16 /* chip writes back at this many or RXT0 */
-#define RXDCTL_PTHRESH_DEFAULT 0 /* chip considers prefech below
- * this */
-#define RXDCTL_HTHRESH_DEFAULT 0 /* chip will only prefetch if tail
- * is pushed this many descriptors
- * from head */
+#define RXDCTL_WTHRESH_DEFAULT 15 /* chip writes back at this many or RXT0 */
+#define RXDCTL_PTHRESH_DEFAULT 0 /* chip considers prefech below
+ * this */
+#define RXDCTL_HTHRESH_DEFAULT 0 /* chip will only prefetch if tail
+ * is pushed this many descriptors
+ * from head */
/**
* ixgb_init_module - Driver Registration Routine
_
Patches currently in -mm which might be from auke-jan.h.kok@xxxxxxxxx are
git-netdev-all.patch
e1000-memory-leak-in-e1000_set_ringparam.patch
e1000-ring-buffers-resources-cleanup.patch
e1000-irq-resources-cleanup.patch
e1000-e1000_probe-resources-cleanup.patch
ixgb-add-pci-error-recovery-callbacks.patch
e100-disable-device-on-pci-error.patch
e1000-disable-device-on-pci-error.patch
e1000_7033_dump_ring.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
