* [RFC] zfcp: add statistics and other zfcp related information to sysfs
@ 2007-09-03 12:16 Swen Schillig
2007-09-03 12:40 ` Matthew Wilcox
0 siblings, 1 reply; 3+ messages in thread
From: Swen Schillig @ 2007-09-03 12:16 UTC (permalink / raw)
To: James Bottomley; +Cc: linux-s390, linux-scsi
The zfcp adapter provides a variety of information which was never
published to the external world. This patch adds a few of those "statistics"
to the sysfs tree structure.
These are reflected in the following attributes
/sys/bus/ccw/drivers/zfcp/0.0.1707
/* information for the virtual adapter */
statistic_services/
requests
megabytes
utilization
seconds_active
/* LUN specific info for channel- and fabric-latency */
0x500507630300c562/0x401040a600000000/
read_latency
write_latency
cmd_latency
Please comment if this would be an acceptable way to publish
the additional information.
Cheers Swen.
---
drivers/s390/scsi/Makefile | 2
drivers/s390/scsi/zfcp_aux.c | 30 ++++
drivers/s390/scsi/zfcp_def.h | 58 +++++----
drivers/s390/scsi/zfcp_ext.h | 32 ++---
drivers/s390/scsi/zfcp_fsf.c | 1
drivers/s390/scsi/zfcp_fsf.h | 29 ++++
drivers/s390/scsi/zfcp_qdio.c | 34 +++++
drivers/s390/scsi/zfcp_sysfs_statistics.c | 191 ++++++++++++++++++++++++++++++
drivers/s390/scsi/zfcp_sysfs_unit.c | 63 +++++++++
9 files changed, 394 insertions(+), 46 deletions(-)
Index: HEAD/drivers/s390/scsi/zfcp_def.h
===================================================================
--- HEAD.orig/drivers/s390/scsi/zfcp_def.h
+++ HEAD/drivers/s390/scsi/zfcp_def.h
@@ -1,23 +1,23 @@
-/*
+/*
* This file is part of the zfcp device driver for
* FCP adapters for IBM System z9 and zSeries.
*
* (C) Copyright IBM Corp. 2002, 2006
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
#ifndef ZFCP_DEF_H
#define ZFCP_DEF_H
@@ -90,7 +90,7 @@ zfcp_address_to_sg(void *address, struct
#define ZFCP_DEVICE_TYPE 0x1732
#define ZFCP_DEVICE_MODEL 0x03
#define ZFCP_DEVICE_MODEL_PRIV 0x04
-
+
/* allow as many chained SBALs as are supported by hardware */
#define ZFCP_MAX_SBALS_PER_REQ FSF_MAX_SBALS_PER_REQ
#define ZFCP_MAX_SBALS_PER_CT_REQ FSF_MAX_SBALS_PER_REQ
@@ -508,7 +508,7 @@ struct zfcp_rc_entry {
/*
* this allows removal of logging code by the preprocessor
- * (the most detailed log level still to be compiled in is specified,
+ * (the most detailed log level still to be compiled in is specified,
* higher log levels are removed)
*/
#define ZFCP_LOG_LEVEL_LIMIT ZFCP_LOG_LEVEL_TRACE
@@ -546,7 +546,7 @@ do { \
if (ZFCP_LOG_CHECK(level)) \
_ZFCP_LOG(fmt, ##args); \
} while (0)
-
+
#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_NORMAL
# define ZFCP_LOG_NORMAL(fmt, args...) do { } while (0)
#else
@@ -583,8 +583,8 @@ do { \
/*************** ADAPTER/PORT/UNIT AND FSF_REQ STATUS FLAGS ******************/
-/*
- * Note, the leftmost status byte is common among adapter, port
+/*
+ * Note, the leftmost status byte is common among adapter, port
* and unit
*/
#define ZFCP_COMMON_FLAGS 0xfff00000
@@ -868,6 +868,17 @@ struct zfcp_erp_action {
struct timer_list timer;
};
+struct latency_cont {
+ u32 channel;
+ u32 fabric;
+ u32 counter;
+};
+
+struct zfcp_latencies {
+ struct latency_cont read;
+ struct latency_cont write;
+ struct latency_cont cmd;
+};
struct zfcp_adapter {
struct list_head list; /* list of adapters */
@@ -883,6 +894,7 @@ struct zfcp_adapter {
u32 adapter_features; /* FCP channel features */
u32 connection_features; /* host connection features */
u32 hardware_version; /* of FCP channel */
+ u16 timer_ticks; /* time int for a tick */
struct Scsi_Host *scsi_host; /* Pointer to mid-layer */
struct list_head port_list_head; /* remote port list */
struct list_head port_remove_lh; /* head of ports to be
@@ -930,6 +942,7 @@ struct zfcp_adapter {
struct zfcp_scsi_dbf_record scsi_dbf_buf;
struct zfcp_adapter_mempool pool; /* Adapter memory pools */
struct qdio_initialize qdio_init_data; /* for qdio_establish */
+ struct device stat_services;
struct device generic_services; /* directory for WKA ports */
struct fc_host_statistics *fc_stats;
struct fsf_qtcb_bottom_port *stats_reset_data;
@@ -986,6 +999,7 @@ struct zfcp_unit {
all scsi_scan_target
requests have been
completed. */
+ struct zfcp_latencies latencies;
};
/* FSF request */
@@ -1007,7 +1021,7 @@ struct zfcp_fsf_req {
u32 fsf_command; /* FSF Command copy */
struct fsf_qtcb *qtcb; /* address of associated QTCB */
u32 seq_no; /* Sequence number of request */
- unsigned long data; /* private data of request */
+ unsigned long data; /* private data of request */
struct timer_list timer; /* used for erp or scsi er */
struct zfcp_erp_action *erp_action; /* used if this request is
issued on behalf of erp */
Index: HEAD/drivers/s390/scsi/zfcp_fsf.c
===================================================================
--- HEAD.orig/drivers/s390/scsi/zfcp_fsf.c
+++ HEAD/drivers/s390/scsi/zfcp_fsf.c
@@ -2079,6 +2079,7 @@ zfcp_fsf_exchange_config_evaluate(struct
fc_host_supported_classes(shost) =
FC_COS_CLASS2 | FC_COS_CLASS3;
adapter->hydra_version = bottom->adapter_type;
+ adapter->timer_ticks = bottom->timer_interval;
if (fc_host_permanent_port_name(shost) == -1)
fc_host_permanent_port_name(shost) =
fc_host_port_name(shost);
Index: HEAD/drivers/s390/scsi/zfcp_fsf.h
===================================================================
--- HEAD.orig/drivers/s390/scsi/zfcp_fsf.h
+++ HEAD/drivers/s390/scsi/zfcp_fsf.h
@@ -213,6 +213,7 @@
#define FSF_FEATURE_HBAAPI_MANAGEMENT 0x00000010
#define FSF_FEATURE_ELS_CT_CHAINED_SBALS 0x00000020
#define FSF_FEATURE_UPDATE_ALERT 0x00000100
+#define FSF_FEATURE_MEASUREMENT_DATA 0x00000200
/* host connection features */
#define FSF_FEATURE_NPIV_MODE 0x00000001
@@ -322,11 +323,18 @@ struct fsf_link_down_info {
u8 vendor_specific_code;
} __attribute__ ((packed));
+struct fsf_qual_latency_info {
+ u32 channel_lat;
+ u32 fabric_lat;
+ u8 res1[8];
+} __attribute__ ((packed));
+
union fsf_prot_status_qual {
u64 doubleword[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u64)];
struct fsf_qual_version_error version_error;
struct fsf_qual_sequence_error sequence_error;
struct fsf_link_down_info link_down_info;
+ struct fsf_qual_latency_info latency_info;
} __attribute__ ((packed));
struct fsf_qtcb_prefix {
@@ -340,6 +348,15 @@ struct fsf_qtcb_prefix {
u8 res1[20];
} __attribute__ ((packed));
+struct fsf_statistics_info {
+ u64 input_req;
+ u64 output_req;
+ u64 control_req;
+ u64 input_mb;
+ u64 output_mb;
+ u64 seconds_act;
+} __attribute__ ((packed));
+
union fsf_status_qual {
u8 byte[FSF_STATUS_QUALIFIER_SIZE];
u16 halfword[FSF_STATUS_QUALIFIER_SIZE / sizeof (u16)];
@@ -427,7 +444,9 @@ struct fsf_qtcb_bottom_config {
u32 fc_link_speed;
u32 adapter_type;
u32 peer_d_id;
- u8 res2[12];
+ u8 res1[2];
+ u16 timer_interval;
+ u8 res2[8];
u32 s_id;
struct fsf_nport_serv_param nport_serv_param;
u8 reserved_nport_serv_param[16];
@@ -436,7 +455,8 @@ struct fsf_qtcb_bottom_config {
u32 hardware_version;
u8 serial_number[32];
struct fsf_nport_serv_param plogi_payload;
- u8 res4[160];
+ struct fsf_statistics_info stat_info;
+ u8 res4[112];
} __attribute__ ((packed));
struct fsf_qtcb_bottom_port {
@@ -469,7 +489,10 @@ struct fsf_qtcb_bottom_port {
u64 control_requests;
u64 input_mb; /* where 1 MByte == 1.000.000 Bytes */
u64 output_mb; /* where 1 MByte == 1.000.000 Bytes */
- u8 res2[256];
+ u8 cp_util;
+ u8 cb_util;
+ u8 a_util;
+ u8 res2[253];
} __attribute__ ((packed));
union fsf_qtcb_bottom {
Index: HEAD/drivers/s390/scsi/zfcp_qdio.c
===================================================================
--- HEAD.orig/drivers/s390/scsi/zfcp_qdio.c
+++ HEAD/drivers/s390/scsi/zfcp_qdio.c
@@ -177,7 +177,7 @@ zfcp_qdio_handler_error_check(struct zfc
* which is set again in case we have missed by a mile.
*/
zfcp_erp_adapter_reopen(
- adapter,
+ adapter,
ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
ZFCP_STATUS_COMMON_ERP_FAILED);
}
@@ -241,6 +241,8 @@ static void zfcp_qdio_reqid_check(struct
{
struct zfcp_fsf_req *fsf_req;
unsigned long flags;
+ struct fsf_qual_latency_info *lat_inf;
+ struct zfcp_unit *unit;
debug_long_event(adapter->erp_dbf, 4, req_id);
@@ -255,6 +257,36 @@ static void zfcp_qdio_reqid_check(struct
panic("error: unknown request id (%ld) on adapter %s.\n",
req_id, zfcp_get_busid_by_adapter(adapter));
+ if ((fsf_req->fsf_command == FSF_QTCB_FCP_CMND) &&
+ (fsf_req->qtcb->prefix.prot_status &
+ (FSF_PROT_GOOD | FSF_PROT_FSF_STATUS_PRESENTED))) {
+ lat_inf = &fsf_req->qtcb->prefix.prot_status_qual.latency_info;
+ unit = fsf_req->unit;
+ switch(fsf_req->qtcb->bottom.io.data_direction) {
+ case FSF_DATADIR_READ:
+ unit->latencies.read.channel +=
+ lat_inf->channel_lat;
+ unit->latencies.read.fabric +=
+ lat_inf->fabric_lat;
+ unit->latencies.read.counter++;
+ break;
+ case FSF_DATADIR_WRITE:
+ unit->latencies.write.channel +=
+ lat_inf->channel_lat;
+ unit->latencies.write.fabric +=
+ lat_inf->fabric_lat;
+ unit->latencies.write.counter++;
+ break;
+ case FSF_DATADIR_CMND:
+ unit->latencies.cmd.channel +=
+ lat_inf->channel_lat;
+ unit->latencies.cmd.fabric +=
+ lat_inf->fabric_lat;
+ unit->latencies.cmd.counter++;
+ break;
+ }
+ }
+
zfcp_reqlist_remove(adapter, fsf_req);
atomic_dec(&adapter->reqs_active);
spin_unlock_irqrestore(&adapter->req_list_lock, flags);
Index: HEAD/drivers/s390/scsi/zfcp_sysfs_unit.c
===================================================================
--- HEAD.orig/drivers/s390/scsi/zfcp_sysfs_unit.c
+++ HEAD/drivers/s390/scsi/zfcp_sysfs_unit.c
@@ -125,6 +125,66 @@ zfcp_sysfs_unit_failed_show(struct devic
static DEVICE_ATTR(failed, S_IWUSR | S_IRUGO, zfcp_sysfs_unit_failed_show,
zfcp_sysfs_unit_failed_store);
+static ssize_t
+zfcp_sysfs_unit_read_latency_show(struct device *dev,
+ struct device_attribute *attr, char *buf) {
+ struct zfcp_unit *unit;
+ struct zfcp_latencies *lat;
+ struct zfcp_adapter *adapter;
+
+ unit = dev_get_drvdata(dev);
+ lat = &unit->latencies;
+ adapter = unit->port->adapter;
+
+ return sprintf(buf, "%u %u %u\n",
+ lat->read.fabric * adapter->timer_ticks / 1000,
+ lat->read.channel * adapter->timer_ticks / 1000,
+ lat->read.counter);
+}
+
+static DEVICE_ATTR(read_latency, S_IRUGO, zfcp_sysfs_unit_read_latency_show,
+ NULL);
+
+static ssize_t
+zfcp_sysfs_unit_write_latency_show(struct device *dev,
+ struct device_attribute *attr, char *buf) {
+ struct zfcp_unit *unit;
+ struct zfcp_latencies *lat;
+ struct zfcp_adapter *adapter;
+
+ unit = dev_get_drvdata(dev);
+ lat = &unit->latencies;
+ adapter = unit->port->adapter;
+
+ return sprintf(buf, "%u %u %u\n",
+ lat->write.fabric * adapter->timer_ticks / 1000,
+ lat->write.channel * adapter->timer_ticks / 1000,
+ lat->write.counter);
+}
+
+static DEVICE_ATTR(write_latency, S_IRUGO, zfcp_sysfs_unit_write_latency_show,
+ NULL);
+
+static ssize_t
+zfcp_sysfs_unit_cmd_latency_show(struct device *dev,
+ struct device_attribute *attr, char *buf) {
+ struct zfcp_unit *unit;
+ struct zfcp_latencies *lat;
+ struct zfcp_adapter *adapter;
+
+ unit = dev_get_drvdata(dev);
+ lat = &unit->latencies;
+ adapter = unit->port->adapter;
+
+ return sprintf(buf, "%u %u %u\n",
+ lat->cmd.fabric * adapter->timer_ticks / 1000,
+ lat->cmd.channel * adapter->timer_ticks / 1000,
+ lat->cmd.counter);
+}
+
+static DEVICE_ATTR(cmd_latency, S_IRUGO, zfcp_sysfs_unit_cmd_latency_show,
+ NULL);
+
static struct attribute *zfcp_unit_attrs[] = {
&dev_attr_failed.attr,
&dev_attr_in_recovery.attr,
@@ -132,6 +192,9 @@ static struct attribute *zfcp_unit_attrs
&dev_attr_access_denied.attr,
&dev_attr_access_shared.attr,
&dev_attr_access_readonly.attr,
+ &dev_attr_read_latency.attr,
+ &dev_attr_write_latency.attr,
+ &dev_attr_cmd_latency.attr,
NULL
};
Index: HEAD/drivers/s390/scsi/zfcp_ext.h
===================================================================
--- HEAD.orig/drivers/s390/scsi/zfcp_ext.h
+++ HEAD/drivers/s390/scsi/zfcp_ext.h
@@ -1,22 +1,22 @@
-/*
+/*
* This file is part of the zfcp device driver for
* FCP adapters for IBM System z9 and zSeries.
*
* (C) Copyright IBM Corp. 2002, 2006
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef ZFCP_EXT_H
@@ -37,6 +37,8 @@ extern int zfcp_sysfs_unit_create_files
extern void zfcp_sysfs_unit_remove_files(struct device *);
extern void zfcp_sysfs_port_release(struct device *);
extern void zfcp_sysfs_unit_release(struct device *);
+extern int zfcp_sysfs_statistic_services_create_files(struct device *);
+extern void zfcp_sysfs_statistic_services_remove_files(struct device *);
/**************************** CONFIGURATION *********************************/
extern struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *, fcp_lun_t);
Index: HEAD/drivers/s390/scsi/zfcp_aux.c
===================================================================
--- HEAD.orig/drivers/s390/scsi/zfcp_aux.c
+++ HEAD/drivers/s390/scsi/zfcp_aux.c
@@ -887,7 +887,7 @@ zfcp_unit_dequeue(struct zfcp_unit *unit
/*
* Allocates a combined QTCB/fsf_req buffer for erp actions and fcp/SCSI
* commands.
- * It also genrates fcp-nameserver request/response buffer and unsolicited
+ * It also genrates fcp-nameserver request/response buffer and unsolicited
* status read fsf_req buffers.
*
* locks: must only be called with zfcp_data.config_sema taken
@@ -978,7 +978,7 @@ zfcp_adapter_enqueue(struct ccw_device *
struct zfcp_adapter *adapter;
/*
- * Note: It is safe to release the list_lock, as any list changes
+ * Note: It is safe to release the list_lock, as any list changes
* are protected by the config_sema, which must be held to get here
*/
@@ -1059,13 +1059,33 @@ zfcp_adapter_enqueue(struct ccw_device *
if (zfcp_sysfs_adapter_create_files(&ccw_device->dev))
goto sysfs_failed;
+ adapter->stat_services.parent = &adapter->ccw_device->dev;
+ adapter->stat_services.release = zfcp_dummy_release;
+ snprintf(adapter->stat_services.bus_id, BUS_ID_SIZE,
+ "statistic_services");
+ dev_set_drvdata(&adapter->stat_services, adapter);
+
+ if (device_register(&adapter->stat_services)) {
+ ZFCP_LOG_NORMAL("SSS:stat_reg failed.\n");
+ goto services_failed;
+ }
+ ZFCP_LOG_NORMAL("SSS:stat_reg succeeded.\n");
+
+ if (zfcp_sysfs_statistic_services_create_files(&adapter->stat_services))
+ {
+ ZFCP_LOG_NORMAL("SSS: create files failed.\n");
+ goto sysfs_failed;
+ }
+
+ ZFCP_LOG_NORMAL("SSS:create files succeeded.\n");
+
adapter->generic_services.parent = &adapter->ccw_device->dev;
adapter->generic_services.release = zfcp_dummy_release;
snprintf(adapter->generic_services.bus_id, BUS_ID_SIZE,
"generic_services");
if (device_register(&adapter->generic_services))
- goto generic_services_failed;
+ goto services_failed;
/* put allocated adapter at list tail */
write_lock_irq(&zfcp_data.config_lock);
@@ -1077,7 +1097,7 @@ zfcp_adapter_enqueue(struct ccw_device *
goto out;
- generic_services_failed:
+ services_failed:
zfcp_sysfs_adapter_remove_files(&adapter->ccw_device->dev);
sysfs_failed:
dev_set_drvdata(&ccw_device->dev, NULL);
@@ -1110,6 +1130,8 @@ zfcp_adapter_dequeue(struct zfcp_adapter
zfcp_adapter_scsi_unregister(adapter);
device_unregister(&adapter->generic_services);
+ zfcp_sysfs_statistic_services_remove_files(&adapter->stat_services);
+ device_unregister(&adapter->stat_services);
zfcp_sysfs_adapter_remove_files(&adapter->ccw_device->dev);
dev_set_drvdata(&adapter->ccw_device->dev, NULL);
/* sanity check: no pending FSF requests */
Index: HEAD/drivers/s390/scsi/Makefile
===================================================================
--- HEAD.orig/drivers/s390/scsi/Makefile
+++ HEAD/drivers/s390/scsi/Makefile
@@ -4,6 +4,6 @@
zfcp-objs := zfcp_aux.o zfcp_ccw.o zfcp_scsi.o zfcp_erp.o zfcp_qdio.o \
zfcp_fsf.o zfcp_dbf.o zfcp_sysfs_adapter.o zfcp_sysfs_port.o \
- zfcp_sysfs_unit.o zfcp_sysfs_driver.o
+ zfcp_sysfs_unit.o zfcp_sysfs_driver.o zfcp_sysfs_statistics.o
obj-$(CONFIG_ZFCP) += zfcp.o
Index: HEAD/drivers/s390/scsi/zfcp_sysfs_statistics.c
===================================================================
--- /dev/null
+++ HEAD/drivers/s390/scsi/zfcp_sysfs_statistics.c
@@ -0,0 +1,191 @@
+/*
+ * This file is part of the zfcp device driver for
+ * FCP adapters for IBM System z9 and zSeries.
+ *
+ * (C) Copyright IBM Corp. 2002, 2006
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "zfcp_ext.h"
+
+#define ZFCP_LOG_AREA ZFCP_LOG_AREA_CONFIG
+
+
+static ssize_t
+zfcp_sysfs_adapter_utilization_show(struct device *dev,
+ struct device_attribute *attr, char *buf) {
+ struct zfcp_adapter *adapter;
+ struct fsf_qtcb_bottom_port *qtcb_port;
+ int retval;
+
+ adapter = dev_get_drvdata(dev);
+
+ qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
+ if (!qtcb_port) {
+ ZFCP_LOG_NORMAL("error: cannot allocate memory for exchange "
+ "port data request (adapter %s).\n",
+ zfcp_get_busid_by_adapter(adapter));
+ return (ssize_t) 0;
+ }
+
+ retval = zfcp_fsf_exchange_port_data_sync(adapter, qtcb_port);
+ if (retval) {
+ ZFCP_LOG_NORMAL("error: exchange port data request failed for "
+ "adapter %s.\n",
+ zfcp_get_busid_by_adapter(adapter));
+ kfree(qtcb_port);
+ return (ssize_t) 0;
+ }
+
+ retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
+ qtcb_port->cb_util, qtcb_port->a_util);
+ kfree(qtcb_port);
+ return retval;
+}
+
+static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_utilization_show,
+ NULL);
+
+static ssize_t
+zfcp_sysfs_adapter_request_show(struct device *dev,
+ struct device_attribute *attr, char *buf) {
+ struct zfcp_adapter *adapter;
+ struct fsf_qtcb_bottom_config *qtcb_config;
+ int retval;
+
+ adapter = dev_get_drvdata(dev);
+
+ qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
+ GFP_KERNEL);
+ if (!qtcb_config) {
+ ZFCP_LOG_NORMAL("error: cannot allocate memory for exchange "
+ "configuration data request (adapter %s).\n",
+ zfcp_get_busid_by_adapter(adapter));
+ return (ssize_t) 0;
+ }
+
+ retval = zfcp_fsf_exchange_config_data_sync(adapter, qtcb_config);
+ if (retval)
+ ZFCP_LOG_NORMAL("error: exchange configuration data request "
+ "failed for adapter %s.\n",
+ zfcp_get_busid_by_adapter(adapter));
+ else
+ retval = sprintf(buf, "%lu %lu %lu\n",
+ qtcb_config->stat_info.input_req,
+ qtcb_config->stat_info.output_req,
+ qtcb_config->stat_info.control_req);
+
+ kfree(qtcb_config);
+ return (retval > 0) ? retval : (ssize_t) 0;
+}
+
+static DEVICE_ATTR(requests, S_IRUGO, zfcp_sysfs_adapter_request_show, NULL);
+
+static ssize_t
+zfcp_sysfs_adapter_mb_show(struct device *dev,
+ struct device_attribute *attr, char *buf) {
+ struct zfcp_adapter *adapter;
+ struct fsf_qtcb_bottom_config *qtcb_config;
+ int retval;
+
+ adapter = dev_get_drvdata(dev);
+
+ qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
+ GFP_KERNEL);
+
+ if (!qtcb_config) {
+ ZFCP_LOG_NORMAL("error: cannot allocate memory for exchange "
+ "configuration data request (adapter %s).\n",
+ zfcp_get_busid_by_adapter(adapter));
+ return (ssize_t) 0;
+ }
+
+ retval = zfcp_fsf_exchange_config_data_sync(adapter, qtcb_config);
+ if (retval)
+ ZFCP_LOG_NORMAL("error: exchnage configuration data request "
+ "failed for adapter %s.\n",
+ zfcp_get_busid_by_adapter(adapter));
+ else
+ retval = sprintf(buf, "%lu %lu\n",
+ qtcb_config->stat_info.input_mb,
+ qtcb_config->stat_info.output_mb);
+
+ kfree(qtcb_config);
+ return (retval > 0) ? retval : (ssize_t) 0;
+}
+
+static DEVICE_ATTR(megabytes, S_IRUGO, zfcp_sysfs_adapter_mb_show, NULL);
+
+static ssize_t
+zfcp_sysfs_adapter_seconds_active_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf) {
+ struct zfcp_adapter *adapter;
+ struct fsf_qtcb_bottom_config *qtcb_config;
+ int retval;
+
+ adapter = dev_get_drvdata(dev);
+
+ qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
+ GFP_KERNEL);
+
+ if (!qtcb_config) {
+ ZFCP_LOG_NORMAL("error: cannot allocate memory for exchange "
+ "configuration data request (adapter %s).\n",
+ zfcp_get_busid_by_adapter(adapter));
+ return (ssize_t) 0;
+ }
+
+ retval = zfcp_fsf_exchange_config_data_sync(adapter, qtcb_config);
+ if (retval)
+ ZFCP_LOG_NORMAL("error: exchange configuration data request "
+ "failed for adapter %s.\n",
+ zfcp_get_busid_by_adapter(adapter));
+ else
+ retval = sprintf(buf, "%lu\n",
+ qtcb_config->stat_info.seconds_act);
+
+ kfree(qtcb_config);
+ return (retval > 0) ? retval: (ssize_t) 0;
+}
+
+static DEVICE_ATTR(seconds_active, S_IRUGO,
+ zfcp_sysfs_adapter_seconds_active_show, NULL);
+
+static struct attribute *zfcp_statistic_services_attrs[] = {
+ &dev_attr_utilization.attr,
+ &dev_attr_requests.attr,
+ &dev_attr_megabytes.attr,
+ &dev_attr_seconds_active.attr,
+ NULL
+};
+
+static struct attribute_group zfcp_statistic_services_attr_group = {
+ .attrs = zfcp_statistic_services_attrs,
+};
+
+int
+zfcp_sysfs_statistic_services_create_files(struct device *dev){
+ return sysfs_create_group(&dev->kobj,
+ &zfcp_statistic_services_attr_group);
+}
+
+void
+zfcp_sysfs_statistic_services_remove_files(struct device *dev) {
+ sysfs_remove_group(&dev->kobj, &zfcp_statistic_services_attr_group);
+}
+
+#undef ZFCP_LOG_AREA
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [RFC] zfcp: add statistics and other zfcp related information to sysfs
2007-09-03 12:16 [RFC] zfcp: add statistics and other zfcp related information to sysfs Swen Schillig
@ 2007-09-03 12:40 ` Matthew Wilcox
2007-09-05 10:33 ` Swen Schillig
0 siblings, 1 reply; 3+ messages in thread
From: Matthew Wilcox @ 2007-09-03 12:40 UTC (permalink / raw)
To: Swen Schillig; +Cc: James Bottomley, linux-s390, linux-scsi
On Mon, Sep 03, 2007 at 02:16:21PM +0200, Swen Schillig wrote:
> /sys/bus/ccw/drivers/zfcp/0.0.1707
> /* information for the virtual adapter */
> statistic_services/
> requests
> megabytes
> utilization
> seconds_active
> /* LUN specific info for channel- and fabric-latency */
> 0x500507630300c562/0x401040a600000000/
> read_latency
> write_latency
> cmd_latency
>
> Please comment if this would be an acceptable way to publish
> the additional information.
This seems like it might be information that other adapters could,
in theory, also provide. Maybe the first set of stats should
be added to /sys/class/scsi_host/hostN/ and the second set to
/sys/class/scsi_device/H:C:T:L/ ? The names of the individual files
make sense to me.
--
Intel are signing my paycheques ... these opinions are still mine
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [RFC] zfcp: add statistics and other zfcp related information to sysfs
2007-09-03 12:40 ` Matthew Wilcox
@ 2007-09-05 10:33 ` Swen Schillig
0 siblings, 0 replies; 3+ messages in thread
From: Swen Schillig @ 2007-09-05 10:33 UTC (permalink / raw)
To: Matthew Wilcox; +Cc: James Bottomley, linux-s390, linux-scsi
On Monday 03 September 2007 14:40, Matthew Wilcox wrote:
> On Mon, Sep 03, 2007 at 02:16:21PM +0200, Swen Schillig wrote:
> > /sys/bus/ccw/drivers/zfcp/0.0.1707
> > /* information for the virtual adapter */
> > statistic_services/
> > requests
> > megabytes
> > utilization
> > seconds_active
> > /* LUN specific info for channel- and fabric-latency */
> > 0x500507630300c562/0x401040a600000000/
> > read_latency
> > write_latency
> > cmd_latency
> >
> > Please comment if this would be an acceptable way to publish
> > the additional information.
>
> This seems like it might be information that other adapters could,
> in theory, also provide. Maybe the first set of stats should
> be added to /sys/class/scsi_host/hostN/ and the second set to
> /sys/class/scsi_device/H:C:T:L/ ? The names of the individual files
> make sense to me.
>
Matthew, thanks for your feedback.
In the past we were trying a centralized and common approach a couple of times,
with no success.
Since we really need to have our data available soon,
I'd prefer to start off with the "proprietary" location and make this data available
to our customers.
Anybody else some comments ?
Otherwise I'll post the patch.
Cheers Swen
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2007-09-05 10:30 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2007-09-03 12:16 [RFC] zfcp: add statistics and other zfcp related information to sysfs Swen Schillig
2007-09-03 12:40 ` Matthew Wilcox
2007-09-05 10:33 ` Swen Schillig
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