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Date: Mon, 12 Mar 2012 21:03:47 -0700 From: Jeff Kirsher <jeffrey.t.kirsher@...el.com> To: davem@...emloft.net Cc: Alexander Duyck <alexander.h.duyck@...el.com>, netdev@...r.kernel.org, gospo@...hat.com, sassmann@...hat.com, Jeff Kirsher <jeffrey.t.kirsher@...el.com> Subject: [net-next 09/14] ixgbe: Correct Adaptive Interrupt Moderation so that it will change values From: Alexander Duyck <alexander.h.duyck@...el.com> This change corrects an issue in which Adaptive Interrupt Moderation was not changing values due to the fact that we were performing an and operation on the resultant value that was causing the value to never change from the default 20K interrupts per second. Signed-off-by: Alexander Duyck <alexander.h.duyck@...el.com> Tested-by: Stephen Ko <stephen.s.ko@...el.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com> --- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index fc3c33a..bad9c05 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -1834,7 +1834,7 @@ void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector) struct ixgbe_adapter *adapter = q_vector->adapter; struct ixgbe_hw *hw = &adapter->hw; int v_idx = q_vector->v_idx; - u32 itr_reg = q_vector->itr; + u32 itr_reg = q_vector->itr & IXGBE_MAX_EITR; switch (adapter->hw.mac.type) { case ixgbe_mac_82598EB: @@ -1886,7 +1886,7 @@ static void ixgbe_set_itr(struct ixgbe_q_vector *q_vector) ((9 * new_itr) + q_vector->itr); /* save the algorithm value here */ - q_vector->itr = new_itr & IXGBE_MAX_EITR; + q_vector->itr = new_itr; ixgbe_write_eitr(q_vector); } -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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