From: Matt Turner Date: Tue, 14 Nov 2017 15:51:33 -0800 Subject: [Intel-wired-lan] [PATCH 2/3] e1000e: Alert the user that C-states will be disabled by enabling jumbo frames In-Reply-To: <20171107221332.28283-2-mattst88@gmail.com> References: <20171107221332.28283-2-mattst88@gmail.com> Message-ID: <20171114235133.14755-1-mattst88@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: intel-wired-lan@osuosl.org List-ID: From: Matt Turner I personally spent a long time trying to decypher why my CPU would not reach deeper C-states. Let's just tell the next user what's going on. Signed-off-by: Matt Turner --- v2: Per Shannon, put string on one line for easier grepping drivers/net/ethernet/intel/e1000e/netdev.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index 286d0277284e..31577dad22cb 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -3288,6 +3288,8 @@ static void e1000_configure_rx(struct e1000_adapter *adapter) ew32(RXDCTL(0), rxdctl | 0x3 | BIT(8)); } + dev_info(&adapter->pdev->dev, + "Some CPU C-states have been disabled in order to enable jumbo frames\n"); pm_qos_update_request(&adapter->pm_qos_req, lat); } else { pm_qos_update_request(&adapter->pm_qos_req, -- 2.13.6