Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753155Ab2JPBuv (ORCPT ); Mon, 15 Oct 2012 21:50:51 -0400 Received: from noserose.net ([66.220.18.76]:51337 "HELO noserose.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752218Ab2JPBuu (ORCPT ); Mon, 15 Oct 2012 21:50:50 -0400 Date: Mon, 15 Oct 2012 18:50:44 -0700 Message-Id: In-Reply-To: References: From: Ed Cashin Subject: [PATCH 6/9] aoe: "payload" sysfs file exports per-AoE-command data transfer size To: akpm@linux-foundation.org Cc: ecashin@coraid.com, linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1813 Lines: 53 The userland aoetools package includes an "aoe-stat" command that can display a "payload size" column when the aoe driver exports this information. Users can quickly see what amount of user data is transferred inside each AoE command on the network, network headers excluded. Signed-off-by: Ed Cashin --- drivers/block/aoe/aoeblk.c | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-) diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c index d5aa3b8..56736cd 100644 --- a/drivers/block/aoe/aoeblk.c +++ b/drivers/block/aoe/aoeblk.c @@ -98,6 +98,14 @@ static ssize_t aoedisk_show_fwver(struct device *dev, return snprintf(page, PAGE_SIZE, "0x%04x\n", (unsigned int) d->fw_ver); } +static ssize_t aoedisk_show_payload(struct device *dev, + struct device_attribute *attr, char *page) +{ + struct gendisk *disk = dev_to_disk(dev); + struct aoedev *d = disk->private_data; + + return snprintf(page, PAGE_SIZE, "%lu\n", d->maxbcnt); +} static DEVICE_ATTR(state, S_IRUGO, aoedisk_show_state, NULL); static DEVICE_ATTR(mac, S_IRUGO, aoedisk_show_mac, NULL); @@ -106,12 +114,14 @@ static struct device_attribute dev_attr_firmware_version = { .attr = { .name = "firmware-version", .mode = S_IRUGO }, .show = aoedisk_show_fwver, }; +static DEVICE_ATTR(payload, S_IRUGO, aoedisk_show_payload, NULL); static struct attribute *aoe_attrs[] = { &dev_attr_state.attr, &dev_attr_mac.attr, &dev_attr_netif.attr, &dev_attr_firmware_version.attr, + &dev_attr_payload.attr, NULL, }; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/