diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /arch/s390/appldata | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | arch/s390/appldata/Makefile | 9 | ||||
-rw-r--r-- | arch/s390/appldata/appldata.h | 48 | ||||
-rw-r--r-- | arch/s390/appldata/appldata_base.c | 428 | ||||
-rw-r--r-- | arch/s390/appldata/appldata_mem.c | 161 | ||||
-rw-r--r-- | arch/s390/appldata/appldata_net_sum.c | 163 | ||||
-rw-r--r-- | arch/s390/appldata/appldata_os.c | 211 |
6 files changed, 1020 insertions, 0 deletions
diff --git a/arch/s390/appldata/Makefile b/arch/s390/appldata/Makefile new file mode 100644 index 0000000000..b06def4a4f --- /dev/null +++ b/arch/s390/appldata/Makefile @@ -0,0 +1,9 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the Linux - z/VM Monitor Stream. +# + +obj-$(CONFIG_APPLDATA_BASE) += appldata_base.o +obj-$(CONFIG_APPLDATA_MEM) += appldata_mem.o +obj-$(CONFIG_APPLDATA_OS) += appldata_os.o +obj-$(CONFIG_APPLDATA_NET_SUM) += appldata_net_sum.o diff --git a/arch/s390/appldata/appldata.h b/arch/s390/appldata/appldata.h new file mode 100644 index 0000000000..10346d2f3d --- /dev/null +++ b/arch/s390/appldata/appldata.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Definitions and interface for Linux - z/VM Monitor Stream. + * + * Copyright IBM Corp. 2003, 2008 + * + * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com> + */ + +#define APPLDATA_MAX_REC_SIZE 4024 /* Maximum size of the */ + /* data buffer */ +#define APPLDATA_MAX_PROCS 100 + +#define APPLDATA_PROC_NAME_LENGTH 16 /* Max. length of /proc name */ + +#define APPLDATA_RECORD_MEM_ID 0x01 /* IDs to identify the */ +#define APPLDATA_RECORD_OS_ID 0x02 /* individual records, */ +#define APPLDATA_RECORD_NET_SUM_ID 0x03 /* must be < 256 ! */ +#define APPLDATA_RECORD_PROC_ID 0x04 + +#define CTL_APPLDATA_TIMER 2121 /* sysctl IDs, must be unique */ +#define CTL_APPLDATA_INTERVAL 2122 +#define CTL_APPLDATA_MEM 2123 +#define CTL_APPLDATA_OS 2124 +#define CTL_APPLDATA_NET_SUM 2125 +#define CTL_APPLDATA_PROC 2126 + +struct appldata_ops { + struct list_head list; + struct ctl_table_header *sysctl_header; + struct ctl_table *ctl_table; + int active; /* monitoring status */ + + /* fill in from here */ + char name[APPLDATA_PROC_NAME_LENGTH]; /* name of /proc fs node */ + unsigned char record_nr; /* Record Nr. for Product ID */ + void (*callback)(void *data); /* callback function */ + void *data; /* record data */ + unsigned int size; /* size of record */ + struct module *owner; /* THIS_MODULE */ + char mod_lvl[2]; /* modification level, EBCDIC */ +}; + +extern int appldata_register_ops(struct appldata_ops *ops); +extern void appldata_unregister_ops(struct appldata_ops *ops); +extern int appldata_diag(char record_nr, u16 function, unsigned long buffer, + u16 length, char *mod_lvl); + diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c new file mode 100644 index 0000000000..3b09946256 --- /dev/null +++ b/arch/s390/appldata/appldata_base.c @@ -0,0 +1,428 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Base infrastructure for Linux-z/VM Monitor Stream, Stage 1. + * Exports appldata_register_ops() and appldata_unregister_ops() for the + * data gathering modules. + * + * Copyright IBM Corp. 2003, 2009 + * + * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com> + */ + +#define KMSG_COMPONENT "appldata" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + +#include <linux/module.h> +#include <linux/sched/stat.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/errno.h> +#include <linux/interrupt.h> +#include <linux/proc_fs.h> +#include <linux/mm.h> +#include <linux/swap.h> +#include <linux/pagemap.h> +#include <linux/sysctl.h> +#include <linux/notifier.h> +#include <linux/cpu.h> +#include <linux/workqueue.h> +#include <linux/uaccess.h> +#include <linux/io.h> +#include <asm/appldata.h> +#include <asm/vtimer.h> +#include <asm/smp.h> + +#include "appldata.h" + + +#define APPLDATA_CPU_INTERVAL 10000 /* default (CPU) time for + sampling interval in + milliseconds */ + +#define TOD_MICRO 0x01000 /* nr. of TOD clock units + for 1 microsecond */ + +/* + * /proc entries (sysctl) + */ +static const char appldata_proc_name[APPLDATA_PROC_NAME_LENGTH] = "appldata"; +static int appldata_timer_handler(struct ctl_table *ctl, int write, + void *buffer, size_t *lenp, loff_t *ppos); +static int appldata_interval_handler(struct ctl_table *ctl, int write, + void *buffer, size_t *lenp, loff_t *ppos); + +static struct ctl_table_header *appldata_sysctl_header; +static struct ctl_table appldata_table[] = { + { + .procname = "timer", + .mode = S_IRUGO | S_IWUSR, + .proc_handler = appldata_timer_handler, + }, + { + .procname = "interval", + .mode = S_IRUGO | S_IWUSR, + .proc_handler = appldata_interval_handler, + }, + { }, +}; + +/* + * Timer + */ +static struct vtimer_list appldata_timer; + +static DEFINE_SPINLOCK(appldata_timer_lock); +static int appldata_interval = APPLDATA_CPU_INTERVAL; +static int appldata_timer_active; + +/* + * Work queue + */ +static struct workqueue_struct *appldata_wq; +static void appldata_work_fn(struct work_struct *work); +static DECLARE_WORK(appldata_work, appldata_work_fn); + + +/* + * Ops list + */ +static DEFINE_MUTEX(appldata_ops_mutex); +static LIST_HEAD(appldata_ops_list); + + +/*************************** timer, work, DIAG *******************************/ +/* + * appldata_timer_function() + * + * schedule work and reschedule timer + */ +static void appldata_timer_function(unsigned long data) +{ + queue_work(appldata_wq, (struct work_struct *) data); +} + +/* + * appldata_work_fn() + * + * call data gathering function for each (active) module + */ +static void appldata_work_fn(struct work_struct *work) +{ + struct list_head *lh; + struct appldata_ops *ops; + + mutex_lock(&appldata_ops_mutex); + list_for_each(lh, &appldata_ops_list) { + ops = list_entry(lh, struct appldata_ops, list); + if (ops->active == 1) { + ops->callback(ops->data); + } + } + mutex_unlock(&appldata_ops_mutex); +} + +static struct appldata_product_id appldata_id = { + .prod_nr = {0xD3, 0xC9, 0xD5, 0xE4, + 0xE7, 0xD2, 0xD9}, /* "LINUXKR" */ + .prod_fn = 0xD5D3, /* "NL" */ + .version_nr = 0xF2F6, /* "26" */ + .release_nr = 0xF0F1, /* "01" */ +}; + +/* + * appldata_diag() + * + * prepare parameter list, issue DIAG 0xDC + */ +int appldata_diag(char record_nr, u16 function, unsigned long buffer, + u16 length, char *mod_lvl) +{ + struct appldata_parameter_list *parm_list; + struct appldata_product_id *id; + int rc; + + parm_list = kmalloc(sizeof(*parm_list), GFP_KERNEL); + id = kmemdup(&appldata_id, sizeof(appldata_id), GFP_KERNEL); + rc = -ENOMEM; + if (parm_list && id) { + id->record_nr = record_nr; + id->mod_lvl = (mod_lvl[0]) << 8 | mod_lvl[1]; + rc = appldata_asm(parm_list, id, function, + (void *) buffer, length); + } + kfree(id); + kfree(parm_list); + return rc; +} +/************************ timer, work, DIAG <END> ****************************/ + + +/****************************** /proc stuff **********************************/ + +#define APPLDATA_ADD_TIMER 0 +#define APPLDATA_DEL_TIMER 1 +#define APPLDATA_MOD_TIMER 2 + +/* + * __appldata_vtimer_setup() + * + * Add, delete or modify virtual timers on all online cpus. + * The caller needs to get the appldata_timer_lock spinlock. + */ +static void __appldata_vtimer_setup(int cmd) +{ + u64 timer_interval = (u64) appldata_interval * 1000 * TOD_MICRO; + + switch (cmd) { + case APPLDATA_ADD_TIMER: + if (appldata_timer_active) + break; + appldata_timer.expires = timer_interval; + add_virt_timer_periodic(&appldata_timer); + appldata_timer_active = 1; + break; + case APPLDATA_DEL_TIMER: + del_virt_timer(&appldata_timer); + if (!appldata_timer_active) + break; + appldata_timer_active = 0; + break; + case APPLDATA_MOD_TIMER: + if (!appldata_timer_active) + break; + mod_virt_timer_periodic(&appldata_timer, timer_interval); + } +} + +/* + * appldata_timer_handler() + * + * Start/Stop timer, show status of timer (0 = not active, 1 = active) + */ +static int +appldata_timer_handler(struct ctl_table *ctl, int write, + void *buffer, size_t *lenp, loff_t *ppos) +{ + int timer_active = appldata_timer_active; + int rc; + struct ctl_table ctl_entry = { + .procname = ctl->procname, + .data = &timer_active, + .maxlen = sizeof(int), + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_ONE, + }; + + rc = proc_douintvec_minmax(&ctl_entry, write, buffer, lenp, ppos); + if (rc < 0 || !write) + return rc; + + spin_lock(&appldata_timer_lock); + if (timer_active) + __appldata_vtimer_setup(APPLDATA_ADD_TIMER); + else + __appldata_vtimer_setup(APPLDATA_DEL_TIMER); + spin_unlock(&appldata_timer_lock); + return 0; +} + +/* + * appldata_interval_handler() + * + * Set (CPU) timer interval for collection of data (in milliseconds), show + * current timer interval. + */ +static int +appldata_interval_handler(struct ctl_table *ctl, int write, + void *buffer, size_t *lenp, loff_t *ppos) +{ + int interval = appldata_interval; + int rc; + struct ctl_table ctl_entry = { + .procname = ctl->procname, + .data = &interval, + .maxlen = sizeof(int), + .extra1 = SYSCTL_ONE, + }; + + rc = proc_dointvec_minmax(&ctl_entry, write, buffer, lenp, ppos); + if (rc < 0 || !write) + return rc; + + spin_lock(&appldata_timer_lock); + appldata_interval = interval; + __appldata_vtimer_setup(APPLDATA_MOD_TIMER); + spin_unlock(&appldata_timer_lock); + return 0; +} + +/* + * appldata_generic_handler() + * + * Generic start/stop monitoring and DIAG, show status of + * monitoring (0 = not in process, 1 = in process) + */ +static int +appldata_generic_handler(struct ctl_table *ctl, int write, + void *buffer, size_t *lenp, loff_t *ppos) +{ + struct appldata_ops *ops = NULL, *tmp_ops; + struct list_head *lh; + int rc, found; + int active; + struct ctl_table ctl_entry = { + .data = &active, + .maxlen = sizeof(int), + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_ONE, + }; + + found = 0; + mutex_lock(&appldata_ops_mutex); + list_for_each(lh, &appldata_ops_list) { + tmp_ops = list_entry(lh, struct appldata_ops, list); + if (&tmp_ops->ctl_table[0] == ctl) { + found = 1; + } + } + if (!found) { + mutex_unlock(&appldata_ops_mutex); + return -ENODEV; + } + ops = ctl->data; + if (!try_module_get(ops->owner)) { // protect this function + mutex_unlock(&appldata_ops_mutex); + return -ENODEV; + } + mutex_unlock(&appldata_ops_mutex); + + active = ops->active; + rc = proc_douintvec_minmax(&ctl_entry, write, buffer, lenp, ppos); + if (rc < 0 || !write) { + module_put(ops->owner); + return rc; + } + + mutex_lock(&appldata_ops_mutex); + if (active && (ops->active == 0)) { + // protect work queue callback + if (!try_module_get(ops->owner)) { + mutex_unlock(&appldata_ops_mutex); + module_put(ops->owner); + return -ENODEV; + } + ops->callback(ops->data); // init record + rc = appldata_diag(ops->record_nr, + APPLDATA_START_INTERVAL_REC, + (unsigned long) ops->data, ops->size, + ops->mod_lvl); + if (rc != 0) { + pr_err("Starting the data collection for %s " + "failed with rc=%d\n", ops->name, rc); + module_put(ops->owner); + } else + ops->active = 1; + } else if (!active && (ops->active == 1)) { + ops->active = 0; + rc = appldata_diag(ops->record_nr, APPLDATA_STOP_REC, + (unsigned long) ops->data, ops->size, + ops->mod_lvl); + if (rc != 0) + pr_err("Stopping the data collection for %s " + "failed with rc=%d\n", ops->name, rc); + module_put(ops->owner); + } + mutex_unlock(&appldata_ops_mutex); + module_put(ops->owner); + return 0; +} + +/*************************** /proc stuff <END> *******************************/ + + +/************************* module-ops management *****************************/ +/* + * appldata_register_ops() + * + * update ops list, register /proc/sys entries + */ +int appldata_register_ops(struct appldata_ops *ops) +{ + if (ops->size > APPLDATA_MAX_REC_SIZE) + return -EINVAL; + + /* The last entry must be an empty one */ + ops->ctl_table = kcalloc(2, sizeof(struct ctl_table), GFP_KERNEL); + if (!ops->ctl_table) + return -ENOMEM; + + mutex_lock(&appldata_ops_mutex); + list_add(&ops->list, &appldata_ops_list); + mutex_unlock(&appldata_ops_mutex); + + ops->ctl_table[0].procname = ops->name; + ops->ctl_table[0].mode = S_IRUGO | S_IWUSR; + ops->ctl_table[0].proc_handler = appldata_generic_handler; + ops->ctl_table[0].data = ops; + + ops->sysctl_header = register_sysctl_sz(appldata_proc_name, ops->ctl_table, 1); + if (!ops->sysctl_header) + goto out; + return 0; +out: + mutex_lock(&appldata_ops_mutex); + list_del(&ops->list); + mutex_unlock(&appldata_ops_mutex); + kfree(ops->ctl_table); + return -ENOMEM; +} + +/* + * appldata_unregister_ops() + * + * update ops list, unregister /proc entries, stop DIAG if necessary + */ +void appldata_unregister_ops(struct appldata_ops *ops) +{ + mutex_lock(&appldata_ops_mutex); + list_del(&ops->list); + mutex_unlock(&appldata_ops_mutex); + unregister_sysctl_table(ops->sysctl_header); + kfree(ops->ctl_table); +} +/********************** module-ops management <END> **************************/ + + +/******************************* init / exit *********************************/ + +/* + * appldata_init() + * + * init timer, register /proc entries + */ +static int __init appldata_init(void) +{ + init_virt_timer(&appldata_timer); + appldata_timer.function = appldata_timer_function; + appldata_timer.data = (unsigned long) &appldata_work; + appldata_wq = alloc_ordered_workqueue("appldata", 0); + if (!appldata_wq) + return -ENOMEM; + appldata_sysctl_header = register_sysctl(appldata_proc_name, appldata_table); + return 0; +} + +__initcall(appldata_init); + +/**************************** init / exit <END> ******************************/ + +EXPORT_SYMBOL_GPL(appldata_register_ops); +EXPORT_SYMBOL_GPL(appldata_unregister_ops); +EXPORT_SYMBOL_GPL(appldata_diag); + +#ifdef CONFIG_SWAP +EXPORT_SYMBOL_GPL(si_swapinfo); +#endif +EXPORT_SYMBOL_GPL(nr_threads); +EXPORT_SYMBOL_GPL(nr_running); +EXPORT_SYMBOL_GPL(nr_iowait); diff --git a/arch/s390/appldata/appldata_mem.c b/arch/s390/appldata/appldata_mem.c new file mode 100644 index 0000000000..fc608f9b79 --- /dev/null +++ b/arch/s390/appldata/appldata_mem.c @@ -0,0 +1,161 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Data gathering module for Linux-VM Monitor Stream, Stage 1. + * Collects data related to memory management. + * + * Copyright IBM Corp. 2003, 2006 + * + * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com> + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/kernel_stat.h> +#include <linux/pagemap.h> +#include <linux/swap.h> +#include <linux/slab.h> +#include <linux/io.h> + +#include "appldata.h" + + +#define P2K(x) ((x) << (PAGE_SHIFT - 10)) /* Converts #Pages to KB */ + +/* + * Memory data + * + * This is accessed as binary data by z/VM. If changes to it can't be avoided, + * the structure version (product ID, see appldata_base.c) needs to be changed + * as well and all documentation and z/VM applications using it must be + * updated. + */ +struct appldata_mem_data { + u64 timestamp; + u32 sync_count_1; /* after VM collected the record data, */ + u32 sync_count_2; /* sync_count_1 and sync_count_2 should be the + same. If not, the record has been updated on + the Linux side while VM was collecting the + (possibly corrupt) data */ + + u64 pgpgin; /* data read from disk */ + u64 pgpgout; /* data written to disk */ + u64 pswpin; /* pages swapped in */ + u64 pswpout; /* pages swapped out */ + + u64 sharedram; /* sharedram is currently set to 0 */ + + u64 totalram; /* total main memory size */ + u64 freeram; /* free main memory size */ + u64 totalhigh; /* total high memory size */ + u64 freehigh; /* free high memory size */ + + u64 bufferram; /* memory reserved for buffers, free cache */ + u64 cached; /* size of (used) cache, w/o buffers */ + u64 totalswap; /* total swap space size */ + u64 freeswap; /* free swap space */ + +// New in 2.6 --> + u64 pgalloc; /* page allocations */ + u64 pgfault; /* page faults (major+minor) */ + u64 pgmajfault; /* page faults (major only) */ +// <-- New in 2.6 + +} __packed; + + +/* + * appldata_get_mem_data() + * + * gather memory data + */ +static void appldata_get_mem_data(void *data) +{ + /* + * don't put large structures on the stack, we are + * serialized through the appldata_ops_mutex and can use static + */ + static struct sysinfo val; + unsigned long ev[NR_VM_EVENT_ITEMS]; + struct appldata_mem_data *mem_data; + + mem_data = data; + mem_data->sync_count_1++; + + all_vm_events(ev); + mem_data->pgpgin = ev[PGPGIN] >> 1; + mem_data->pgpgout = ev[PGPGOUT] >> 1; + mem_data->pswpin = ev[PSWPIN]; + mem_data->pswpout = ev[PSWPOUT]; + mem_data->pgalloc = ev[PGALLOC_NORMAL]; + mem_data->pgalloc += ev[PGALLOC_DMA]; + mem_data->pgfault = ev[PGFAULT]; + mem_data->pgmajfault = ev[PGMAJFAULT]; + + si_meminfo(&val); + mem_data->sharedram = val.sharedram; + mem_data->totalram = P2K(val.totalram); + mem_data->freeram = P2K(val.freeram); + mem_data->totalhigh = P2K(val.totalhigh); + mem_data->freehigh = P2K(val.freehigh); + mem_data->bufferram = P2K(val.bufferram); + mem_data->cached = P2K(global_node_page_state(NR_FILE_PAGES) + - val.bufferram); + + si_swapinfo(&val); + mem_data->totalswap = P2K(val.totalswap); + mem_data->freeswap = P2K(val.freeswap); + + mem_data->timestamp = get_tod_clock(); + mem_data->sync_count_2++; +} + + +static struct appldata_ops ops = { + .name = "mem", + .record_nr = APPLDATA_RECORD_MEM_ID, + .size = sizeof(struct appldata_mem_data), + .callback = &appldata_get_mem_data, + .owner = THIS_MODULE, + .mod_lvl = {0xF0, 0xF0}, /* EBCDIC "00" */ +}; + + +/* + * appldata_mem_init() + * + * init_data, register ops + */ +static int __init appldata_mem_init(void) +{ + int ret; + + ops.data = kzalloc(sizeof(struct appldata_mem_data), GFP_KERNEL); + if (!ops.data) + return -ENOMEM; + + ret = appldata_register_ops(&ops); + if (ret) + kfree(ops.data); + + return ret; +} + +/* + * appldata_mem_exit() + * + * unregister ops + */ +static void __exit appldata_mem_exit(void) +{ + appldata_unregister_ops(&ops); + kfree(ops.data); +} + + +module_init(appldata_mem_init); +module_exit(appldata_mem_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Gerald Schaefer"); +MODULE_DESCRIPTION("Linux-VM Monitor Stream, MEMORY statistics"); diff --git a/arch/s390/appldata/appldata_net_sum.c b/arch/s390/appldata/appldata_net_sum.c new file mode 100644 index 0000000000..59c282ca00 --- /dev/null +++ b/arch/s390/appldata/appldata_net_sum.c @@ -0,0 +1,163 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Data gathering module for Linux-VM Monitor Stream, Stage 1. + * Collects accumulated network statistics (Packets received/transmitted, + * dropped, errors, ...). + * + * Copyright IBM Corp. 2003, 2006 + * + * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com> + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/kernel_stat.h> +#include <linux/netdevice.h> +#include <net/net_namespace.h> + +#include "appldata.h" + + +/* + * Network data + * + * This is accessed as binary data by z/VM. If changes to it can't be avoided, + * the structure version (product ID, see appldata_base.c) needs to be changed + * as well and all documentation and z/VM applications using it must be updated. + */ +struct appldata_net_sum_data { + u64 timestamp; + u32 sync_count_1; /* after VM collected the record data, */ + u32 sync_count_2; /* sync_count_1 and sync_count_2 should be the + same. If not, the record has been updated on + the Linux side while VM was collecting the + (possibly corrupt) data */ + + u32 nr_interfaces; /* nr. of network interfaces being monitored */ + + u32 padding; /* next value is 64-bit aligned, so these */ + /* 4 byte would be padded out by compiler */ + + u64 rx_packets; /* total packets received */ + u64 tx_packets; /* total packets transmitted */ + u64 rx_bytes; /* total bytes received */ + u64 tx_bytes; /* total bytes transmitted */ + u64 rx_errors; /* bad packets received */ + u64 tx_errors; /* packet transmit problems */ + u64 rx_dropped; /* no space in linux buffers */ + u64 tx_dropped; /* no space available in linux */ + u64 collisions; /* collisions while transmitting */ +} __packed; + + +/* + * appldata_get_net_sum_data() + * + * gather accumulated network statistics + */ +static void appldata_get_net_sum_data(void *data) +{ + int i; + struct appldata_net_sum_data *net_data; + struct net_device *dev; + unsigned long rx_packets, tx_packets, rx_bytes, tx_bytes, rx_errors, + tx_errors, rx_dropped, tx_dropped, collisions; + + net_data = data; + net_data->sync_count_1++; + + i = 0; + rx_packets = 0; + tx_packets = 0; + rx_bytes = 0; + tx_bytes = 0; + rx_errors = 0; + tx_errors = 0; + rx_dropped = 0; + tx_dropped = 0; + collisions = 0; + + rcu_read_lock(); + for_each_netdev_rcu(&init_net, dev) { + const struct rtnl_link_stats64 *stats; + struct rtnl_link_stats64 temp; + + stats = dev_get_stats(dev, &temp); + rx_packets += stats->rx_packets; + tx_packets += stats->tx_packets; + rx_bytes += stats->rx_bytes; + tx_bytes += stats->tx_bytes; + rx_errors += stats->rx_errors; + tx_errors += stats->tx_errors; + rx_dropped += stats->rx_dropped; + tx_dropped += stats->tx_dropped; + collisions += stats->collisions; + i++; + } + rcu_read_unlock(); + + net_data->nr_interfaces = i; + net_data->rx_packets = rx_packets; + net_data->tx_packets = tx_packets; + net_data->rx_bytes = rx_bytes; + net_data->tx_bytes = tx_bytes; + net_data->rx_errors = rx_errors; + net_data->tx_errors = tx_errors; + net_data->rx_dropped = rx_dropped; + net_data->tx_dropped = tx_dropped; + net_data->collisions = collisions; + + net_data->timestamp = get_tod_clock(); + net_data->sync_count_2++; +} + + +static struct appldata_ops ops = { + .name = "net_sum", + .record_nr = APPLDATA_RECORD_NET_SUM_ID, + .size = sizeof(struct appldata_net_sum_data), + .callback = &appldata_get_net_sum_data, + .owner = THIS_MODULE, + .mod_lvl = {0xF0, 0xF0}, /* EBCDIC "00" */ +}; + + +/* + * appldata_net_init() + * + * init data, register ops + */ +static int __init appldata_net_init(void) +{ + int ret; + + ops.data = kzalloc(sizeof(struct appldata_net_sum_data), GFP_KERNEL); + if (!ops.data) + return -ENOMEM; + + ret = appldata_register_ops(&ops); + if (ret) + kfree(ops.data); + + return ret; +} + +/* + * appldata_net_exit() + * + * unregister ops + */ +static void __exit appldata_net_exit(void) +{ + appldata_unregister_ops(&ops); + kfree(ops.data); +} + + +module_init(appldata_net_init); +module_exit(appldata_net_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Gerald Schaefer"); +MODULE_DESCRIPTION("Linux-VM Monitor Stream, accumulated network statistics"); diff --git a/arch/s390/appldata/appldata_os.c b/arch/s390/appldata/appldata_os.c new file mode 100644 index 0000000000..a363d30ce7 --- /dev/null +++ b/arch/s390/appldata/appldata_os.c @@ -0,0 +1,211 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Data gathering module for Linux-VM Monitor Stream, Stage 1. + * Collects misc. OS related data (CPU utilization, running processes). + * + * Copyright IBM Corp. 2003, 2006 + * + * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com> + */ + +#define KMSG_COMPONENT "appldata" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/errno.h> +#include <linux/kernel_stat.h> +#include <linux/netdevice.h> +#include <linux/sched.h> +#include <linux/sched/loadavg.h> +#include <linux/sched/stat.h> +#include <asm/appldata.h> +#include <asm/smp.h> + +#include "appldata.h" + +/* + * OS data + * + * This is accessed as binary data by z/VM. If changes to it can't be avoided, + * the structure version (product ID, see appldata_base.c) needs to be changed + * as well and all documentation and z/VM applications using it must be + * updated. + */ +struct appldata_os_per_cpu { + u32 per_cpu_user; /* timer ticks spent in user mode */ + u32 per_cpu_nice; /* ... spent with modified priority */ + u32 per_cpu_system; /* ... spent in kernel mode */ + u32 per_cpu_idle; /* ... spent in idle mode */ + + /* New in 2.6 */ + u32 per_cpu_irq; /* ... spent in interrupts */ + u32 per_cpu_softirq; /* ... spent in softirqs */ + u32 per_cpu_iowait; /* ... spent while waiting for I/O */ + + /* New in modification level 01 */ + u32 per_cpu_steal; /* ... stolen by hypervisor */ + u32 cpu_id; /* number of this CPU */ +} __attribute__((packed)); + +struct appldata_os_data { + u64 timestamp; + u32 sync_count_1; /* after VM collected the record data, */ + u32 sync_count_2; /* sync_count_1 and sync_count_2 should be the + same. If not, the record has been updated on + the Linux side while VM was collecting the + (possibly corrupt) data */ + + u32 nr_cpus; /* number of (virtual) CPUs */ + u32 per_cpu_size; /* size of the per-cpu data struct */ + u32 cpu_offset; /* offset of the first per-cpu data struct */ + + u32 nr_running; /* number of runnable threads */ + u32 nr_threads; /* number of threads */ + u32 avenrun[3]; /* average nr. of running processes during */ + /* the last 1, 5 and 15 minutes */ + + /* New in 2.6 */ + u32 nr_iowait; /* number of blocked threads + (waiting for I/O) */ + + /* per cpu data */ + struct appldata_os_per_cpu os_cpu[]; +} __attribute__((packed)); + +static struct appldata_os_data *appldata_os_data; + +static struct appldata_ops ops = { + .name = "os", + .record_nr = APPLDATA_RECORD_OS_ID, + .owner = THIS_MODULE, + .mod_lvl = {0xF0, 0xF1}, /* EBCDIC "01" */ +}; + + +/* + * appldata_get_os_data() + * + * gather OS data + */ +static void appldata_get_os_data(void *data) +{ + int i, j, rc; + struct appldata_os_data *os_data; + unsigned int new_size; + + os_data = data; + os_data->sync_count_1++; + + os_data->nr_threads = nr_threads; + os_data->nr_running = nr_running(); + os_data->nr_iowait = nr_iowait(); + os_data->avenrun[0] = avenrun[0] + (FIXED_1/200); + os_data->avenrun[1] = avenrun[1] + (FIXED_1/200); + os_data->avenrun[2] = avenrun[2] + (FIXED_1/200); + + j = 0; + for_each_online_cpu(i) { + os_data->os_cpu[j].per_cpu_user = + nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_USER]); + os_data->os_cpu[j].per_cpu_nice = + nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_NICE]); + os_data->os_cpu[j].per_cpu_system = + nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_SYSTEM]); + os_data->os_cpu[j].per_cpu_idle = + nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_IDLE]); + os_data->os_cpu[j].per_cpu_irq = + nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_IRQ]); + os_data->os_cpu[j].per_cpu_softirq = + nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_SOFTIRQ]); + os_data->os_cpu[j].per_cpu_iowait = + nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_IOWAIT]); + os_data->os_cpu[j].per_cpu_steal = + nsecs_to_jiffies(kcpustat_cpu(i).cpustat[CPUTIME_STEAL]); + os_data->os_cpu[j].cpu_id = i; + j++; + } + + os_data->nr_cpus = j; + + new_size = struct_size(os_data, os_cpu, os_data->nr_cpus); + if (ops.size != new_size) { + if (ops.active) { + rc = appldata_diag(APPLDATA_RECORD_OS_ID, + APPLDATA_START_INTERVAL_REC, + (unsigned long) ops.data, new_size, + ops.mod_lvl); + if (rc != 0) + pr_err("Starting a new OS data collection " + "failed with rc=%d\n", rc); + + rc = appldata_diag(APPLDATA_RECORD_OS_ID, + APPLDATA_STOP_REC, + (unsigned long) ops.data, ops.size, + ops.mod_lvl); + if (rc != 0) + pr_err("Stopping a faulty OS data " + "collection failed with rc=%d\n", rc); + } + ops.size = new_size; + } + os_data->timestamp = get_tod_clock(); + os_data->sync_count_2++; +} + + +/* + * appldata_os_init() + * + * init data, register ops + */ +static int __init appldata_os_init(void) +{ + int rc, max_size; + + max_size = struct_size(appldata_os_data, os_cpu, num_possible_cpus()); + if (max_size > APPLDATA_MAX_REC_SIZE) { + pr_err("Maximum OS record size %i exceeds the maximum " + "record size %i\n", max_size, APPLDATA_MAX_REC_SIZE); + rc = -ENOMEM; + goto out; + } + + appldata_os_data = kzalloc(max_size, GFP_KERNEL | GFP_DMA); + if (appldata_os_data == NULL) { + rc = -ENOMEM; + goto out; + } + + appldata_os_data->per_cpu_size = sizeof(struct appldata_os_per_cpu); + appldata_os_data->cpu_offset = offsetof(struct appldata_os_data, + os_cpu); + + ops.data = appldata_os_data; + ops.callback = &appldata_get_os_data; + rc = appldata_register_ops(&ops); + if (rc != 0) + kfree(appldata_os_data); +out: + return rc; +} + +/* + * appldata_os_exit() + * + * unregister ops + */ +static void __exit appldata_os_exit(void) +{ + appldata_unregister_ops(&ops); + kfree(appldata_os_data); +} + + +module_init(appldata_os_init); +module_exit(appldata_os_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Gerald Schaefer"); +MODULE_DESCRIPTION("Linux-VM Monitor Stream, OS statistics"); |