diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/s390/appldata/appldata_base.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/s390/appldata/appldata_base.c | 673 |
1 files changed, 0 insertions, 673 deletions
diff --git a/ANDROID_3.4.5/arch/s390/appldata/appldata_base.c b/ANDROID_3.4.5/arch/s390/appldata/appldata_base.c deleted file mode 100644 index 24bff4f1..00000000 --- a/ANDROID_3.4.5/arch/s390/appldata/appldata_base.c +++ /dev/null @@ -1,673 +0,0 @@ -/* - * arch/s390/appldata/appldata_base.c - * - * 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/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/suspend.h> -#include <linux/platform_device.h> -#include <asm/appldata.h> -#include <asm/timer.h> -#include <asm/uaccess.h> -#include <asm/io.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 */ - -static struct platform_device *appldata_pdev; - -/* - * /proc entries (sysctl) - */ -static const char appldata_proc_name[APPLDATA_PROC_NAME_LENGTH] = "appldata"; -static int appldata_timer_handler(ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos); -static int appldata_interval_handler(ctl_table *ctl, int write, - void __user *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, - }, - { }, -}; - -static struct ctl_table appldata_dir_table[] = { - { - .procname = appldata_proc_name, - .maxlen = 0, - .mode = S_IRUGO | S_IXUGO, - .child = appldata_table, - }, - { }, -}; - -/* - * Timer - */ -static DEFINE_PER_CPU(struct vtimer_list, appldata_timer); -static atomic_t appldata_expire_count = ATOMIC_INIT(0); - -static DEFINE_SPINLOCK(appldata_timer_lock); -static int appldata_interval = APPLDATA_CPU_INTERVAL; -static int appldata_timer_active; -static int appldata_timer_suspended = 0; - -/* - * 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) -{ - if (atomic_dec_and_test(&appldata_expire_count)) { - atomic_set(&appldata_expire_count, num_online_cpus()); - 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; - - get_online_cpus(); - 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); - put_online_cpus(); -} - -/* - * 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_product_id id = { - .prod_nr = {0xD3, 0xC9, 0xD5, 0xE4, - 0xE7, 0xD2, 0xD9}, /* "LINUXKR" */ - .prod_fn = 0xD5D3, /* "NL" */ - .version_nr = 0xF2F6, /* "26" */ - .release_nr = 0xF0F1, /* "01" */ - }; - - id.record_nr = record_nr; - id.mod_lvl = (mod_lvl[0]) << 8 | mod_lvl[1]; - return appldata_asm(&id, function, (void *) buffer, length); -} -/************************ timer, work, DIAG <END> ****************************/ - - -/****************************** /proc stuff **********************************/ - -/* - * appldata_mod_vtimer_wrap() - * - * wrapper function for mod_virt_timer(), because smp_call_function_single() - * accepts only one parameter. - */ -static void __appldata_mod_vtimer_wrap(void *p) { - struct { - struct vtimer_list *timer; - u64 expires; - } *args = p; - mod_virt_timer_periodic(args->timer, args->expires); -} - -#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 per_cpu_interval; - int i; - - switch (cmd) { - case APPLDATA_ADD_TIMER: - if (appldata_timer_active) - break; - per_cpu_interval = (u64) (appldata_interval*1000 / - num_online_cpus()) * TOD_MICRO; - for_each_online_cpu(i) { - per_cpu(appldata_timer, i).expires = per_cpu_interval; - smp_call_function_single(i, add_virt_timer_periodic, - &per_cpu(appldata_timer, i), - 1); - } - appldata_timer_active = 1; - break; - case APPLDATA_DEL_TIMER: - for_each_online_cpu(i) - del_virt_timer(&per_cpu(appldata_timer, i)); - if (!appldata_timer_active) - break; - appldata_timer_active = 0; - atomic_set(&appldata_expire_count, num_online_cpus()); - break; - case APPLDATA_MOD_TIMER: - per_cpu_interval = (u64) (appldata_interval*1000 / - num_online_cpus()) * TOD_MICRO; - if (!appldata_timer_active) - break; - for_each_online_cpu(i) { - struct { - struct vtimer_list *timer; - u64 expires; - } args; - args.timer = &per_cpu(appldata_timer, i); - args.expires = per_cpu_interval; - smp_call_function_single(i, __appldata_mod_vtimer_wrap, - &args, 1); - } - } -} - -/* - * appldata_timer_handler() - * - * Start/Stop timer, show status of timer (0 = not active, 1 = active) - */ -static int -appldata_timer_handler(ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) -{ - int len; - char buf[2]; - - if (!*lenp || *ppos) { - *lenp = 0; - return 0; - } - if (!write) { - len = sprintf(buf, appldata_timer_active ? "1\n" : "0\n"); - if (len > *lenp) - len = *lenp; - if (copy_to_user(buffer, buf, len)) - return -EFAULT; - goto out; - } - len = *lenp; - if (copy_from_user(buf, buffer, len > sizeof(buf) ? sizeof(buf) : len)) - return -EFAULT; - get_online_cpus(); - spin_lock(&appldata_timer_lock); - if (buf[0] == '1') - __appldata_vtimer_setup(APPLDATA_ADD_TIMER); - else if (buf[0] == '0') - __appldata_vtimer_setup(APPLDATA_DEL_TIMER); - spin_unlock(&appldata_timer_lock); - put_online_cpus(); -out: - *lenp = len; - *ppos += len; - return 0; -} - -/* - * appldata_interval_handler() - * - * Set (CPU) timer interval for collection of data (in milliseconds), show - * current timer interval. - */ -static int -appldata_interval_handler(ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) -{ - int len, interval; - char buf[16]; - - if (!*lenp || *ppos) { - *lenp = 0; - return 0; - } - if (!write) { - len = sprintf(buf, "%i\n", appldata_interval); - if (len > *lenp) - len = *lenp; - if (copy_to_user(buffer, buf, len)) - return -EFAULT; - goto out; - } - len = *lenp; - if (copy_from_user(buf, buffer, len > sizeof(buf) ? sizeof(buf) : len)) { - return -EFAULT; - } - interval = 0; - sscanf(buf, "%i", &interval); - if (interval <= 0) - return -EINVAL; - - get_online_cpus(); - spin_lock(&appldata_timer_lock); - appldata_interval = interval; - __appldata_vtimer_setup(APPLDATA_MOD_TIMER); - spin_unlock(&appldata_timer_lock); - put_online_cpus(); -out: - *lenp = len; - *ppos += len; - 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(ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) -{ - struct appldata_ops *ops = NULL, *tmp_ops; - int rc, len, found; - char buf[2]; - struct list_head *lh; - - 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[2] == 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); - - if (!*lenp || *ppos) { - *lenp = 0; - module_put(ops->owner); - return 0; - } - if (!write) { - len = sprintf(buf, ops->active ? "1\n" : "0\n"); - if (len > *lenp) - len = *lenp; - if (copy_to_user(buffer, buf, len)) { - module_put(ops->owner); - return -EFAULT; - } - goto out; - } - len = *lenp; - if (copy_from_user(buf, buffer, - len > sizeof(buf) ? sizeof(buf) : len)) { - module_put(ops->owner); - return -EFAULT; - } - - mutex_lock(&appldata_ops_mutex); - if ((buf[0] == '1') && (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 ((buf[0] == '0') && (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); -out: - *lenp = len; - *ppos += len; - 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; - - ops->ctl_table = kzalloc(4 * 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 = appldata_proc_name; - ops->ctl_table[0].maxlen = 0; - ops->ctl_table[0].mode = S_IRUGO | S_IXUGO; - ops->ctl_table[0].child = &ops->ctl_table[2]; - - ops->ctl_table[2].procname = ops->name; - ops->ctl_table[2].mode = S_IRUGO | S_IWUSR; - ops->ctl_table[2].proc_handler = appldata_generic_handler; - ops->ctl_table[2].data = ops; - - ops->sysctl_header = register_sysctl_table(ops->ctl_table); - 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> **************************/ - - -/**************************** suspend / resume *******************************/ -static int appldata_freeze(struct device *dev) -{ - struct appldata_ops *ops; - int rc; - struct list_head *lh; - - get_online_cpus(); - spin_lock(&appldata_timer_lock); - if (appldata_timer_active) { - __appldata_vtimer_setup(APPLDATA_DEL_TIMER); - appldata_timer_suspended = 1; - } - spin_unlock(&appldata_timer_lock); - put_online_cpus(); - - mutex_lock(&appldata_ops_mutex); - list_for_each(lh, &appldata_ops_list) { - ops = list_entry(lh, struct appldata_ops, list); - if (ops->active == 1) { - 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); - } - } - mutex_unlock(&appldata_ops_mutex); - return 0; -} - -static int appldata_restore(struct device *dev) -{ - struct appldata_ops *ops; - int rc; - struct list_head *lh; - - get_online_cpus(); - spin_lock(&appldata_timer_lock); - if (appldata_timer_suspended) { - __appldata_vtimer_setup(APPLDATA_ADD_TIMER); - appldata_timer_suspended = 0; - } - spin_unlock(&appldata_timer_lock); - put_online_cpus(); - - 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); // 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); - } - } - } - mutex_unlock(&appldata_ops_mutex); - return 0; -} - -static int appldata_thaw(struct device *dev) -{ - return appldata_restore(dev); -} - -static const struct dev_pm_ops appldata_pm_ops = { - .freeze = appldata_freeze, - .thaw = appldata_thaw, - .restore = appldata_restore, -}; - -static struct platform_driver appldata_pdrv = { - .driver = { - .name = "appldata", - .owner = THIS_MODULE, - .pm = &appldata_pm_ops, - }, -}; -/************************* suspend / resume <END> ****************************/ - - -/******************************* init / exit *********************************/ - -static void __cpuinit appldata_online_cpu(int cpu) -{ - init_virt_timer(&per_cpu(appldata_timer, cpu)); - per_cpu(appldata_timer, cpu).function = appldata_timer_function; - per_cpu(appldata_timer, cpu).data = (unsigned long) - &appldata_work; - atomic_inc(&appldata_expire_count); - spin_lock(&appldata_timer_lock); - __appldata_vtimer_setup(APPLDATA_MOD_TIMER); - spin_unlock(&appldata_timer_lock); -} - -static void __cpuinit appldata_offline_cpu(int cpu) -{ - del_virt_timer(&per_cpu(appldata_timer, cpu)); - if (atomic_dec_and_test(&appldata_expire_count)) { - atomic_set(&appldata_expire_count, num_online_cpus()); - queue_work(appldata_wq, &appldata_work); - } - spin_lock(&appldata_timer_lock); - __appldata_vtimer_setup(APPLDATA_MOD_TIMER); - spin_unlock(&appldata_timer_lock); -} - -static int __cpuinit appldata_cpu_notify(struct notifier_block *self, - unsigned long action, - void *hcpu) -{ - switch (action) { - case CPU_ONLINE: - case CPU_ONLINE_FROZEN: - appldata_online_cpu((long) hcpu); - break; - case CPU_DEAD: - case CPU_DEAD_FROZEN: - appldata_offline_cpu((long) hcpu); - break; - default: - break; - } - return NOTIFY_OK; -} - -static struct notifier_block __cpuinitdata appldata_nb = { - .notifier_call = appldata_cpu_notify, -}; - -/* - * appldata_init() - * - * init timer, register /proc entries - */ -static int __init appldata_init(void) -{ - int i, rc; - - rc = platform_driver_register(&appldata_pdrv); - if (rc) - return rc; - - appldata_pdev = platform_device_register_simple("appldata", -1, NULL, - 0); - if (IS_ERR(appldata_pdev)) { - rc = PTR_ERR(appldata_pdev); - goto out_driver; - } - appldata_wq = create_singlethread_workqueue("appldata"); - if (!appldata_wq) { - rc = -ENOMEM; - goto out_device; - } - - get_online_cpus(); - for_each_online_cpu(i) - appldata_online_cpu(i); - put_online_cpus(); - - /* Register cpu hotplug notifier */ - register_hotcpu_notifier(&appldata_nb); - - appldata_sysctl_header = register_sysctl_table(appldata_dir_table); - return 0; - -out_device: - platform_device_unregister(appldata_pdev); -out_driver: - platform_driver_unregister(&appldata_pdrv); - return rc; -} - -__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); |