^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Base infrastructure for Linux-z/VM Monitor Stream, Stage 1.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Exports appldata_register_ops() and appldata_unregister_ops() for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * data gathering modules.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright IBM Corp. 2003, 2009
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define KMSG_COMPONENT "appldata"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/sched/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/proc_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/swap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/pagemap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/sysctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/notifier.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/cpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/workqueue.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/suspend.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <asm/appldata.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <asm/vtimer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <asm/smp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include "appldata.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define APPLDATA_CPU_INTERVAL 10000 /* default (CPU) time for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) sampling interval in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) milliseconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define TOD_MICRO 0x01000 /* nr. of TOD clock units
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) for 1 microsecond */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static struct platform_device *appldata_pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * /proc entries (sysctl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static const char appldata_proc_name[APPLDATA_PROC_NAME_LENGTH] = "appldata";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static int appldata_timer_handler(struct ctl_table *ctl, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) void *buffer, size_t *lenp, loff_t *ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static int appldata_interval_handler(struct ctl_table *ctl, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) void *buffer, size_t *lenp, loff_t *ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static struct ctl_table_header *appldata_sysctl_header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static struct ctl_table appldata_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) .procname = "timer",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) .mode = S_IRUGO | S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) .proc_handler = appldata_timer_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) .procname = "interval",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) .mode = S_IRUGO | S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) .proc_handler = appldata_interval_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) static struct ctl_table appldata_dir_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) .procname = appldata_proc_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) .maxlen = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .mode = S_IRUGO | S_IXUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) .child = appldata_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * Timer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static struct vtimer_list appldata_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) static DEFINE_SPINLOCK(appldata_timer_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static int appldata_interval = APPLDATA_CPU_INTERVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static int appldata_timer_active;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static int appldata_timer_suspended = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * Work queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static struct workqueue_struct *appldata_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) static void appldata_work_fn(struct work_struct *work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static DECLARE_WORK(appldata_work, appldata_work_fn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * Ops list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static DEFINE_MUTEX(appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static LIST_HEAD(appldata_ops_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) /*************************** timer, work, DIAG *******************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * appldata_timer_function()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * schedule work and reschedule timer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static void appldata_timer_function(unsigned long data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) queue_work(appldata_wq, (struct work_struct *) data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * appldata_work_fn()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * call data gathering function for each (active) module
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) static void appldata_work_fn(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct list_head *lh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct appldata_ops *ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) mutex_lock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) list_for_each(lh, &appldata_ops_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) ops = list_entry(lh, struct appldata_ops, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (ops->active == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) ops->callback(ops->data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) mutex_unlock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static struct appldata_product_id appldata_id = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) .prod_nr = {0xD3, 0xC9, 0xD5, 0xE4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 0xE7, 0xD2, 0xD9}, /* "LINUXKR" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) .prod_fn = 0xD5D3, /* "NL" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) .version_nr = 0xF2F6, /* "26" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) .release_nr = 0xF0F1, /* "01" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * appldata_diag()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * prepare parameter list, issue DIAG 0xDC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) int appldata_diag(char record_nr, u16 function, unsigned long buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) u16 length, char *mod_lvl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) struct appldata_parameter_list *parm_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) struct appldata_product_id *id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) parm_list = kmalloc(sizeof(*parm_list), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) id = kmemdup(&appldata_id, sizeof(appldata_id), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (parm_list && id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) id->record_nr = record_nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) id->mod_lvl = (mod_lvl[0]) << 8 | mod_lvl[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) rc = appldata_asm(parm_list, id, function,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) (void *) buffer, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) kfree(id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) kfree(parm_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) /************************ timer, work, DIAG <END> ****************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) /****************************** /proc stuff **********************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) #define APPLDATA_ADD_TIMER 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) #define APPLDATA_DEL_TIMER 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) #define APPLDATA_MOD_TIMER 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * __appldata_vtimer_setup()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * Add, delete or modify virtual timers on all online cpus.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * The caller needs to get the appldata_timer_lock spinlock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) static void __appldata_vtimer_setup(int cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) u64 timer_interval = (u64) appldata_interval * 1000 * TOD_MICRO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) case APPLDATA_ADD_TIMER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (appldata_timer_active)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) appldata_timer.expires = timer_interval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) add_virt_timer_periodic(&appldata_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) appldata_timer_active = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) case APPLDATA_DEL_TIMER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) del_virt_timer(&appldata_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (!appldata_timer_active)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) appldata_timer_active = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) case APPLDATA_MOD_TIMER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (!appldata_timer_active)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) mod_virt_timer_periodic(&appldata_timer, timer_interval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) * appldata_timer_handler()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) * Start/Stop timer, show status of timer (0 = not active, 1 = active)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) appldata_timer_handler(struct ctl_table *ctl, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) void *buffer, size_t *lenp, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) int timer_active = appldata_timer_active;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) struct ctl_table ctl_entry = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) .procname = ctl->procname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) .data = &timer_active,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) .extra1 = SYSCTL_ZERO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) .extra2 = SYSCTL_ONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) rc = proc_douintvec_minmax(&ctl_entry, write, buffer, lenp, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) if (rc < 0 || !write)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) spin_lock(&appldata_timer_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) if (timer_active)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) __appldata_vtimer_setup(APPLDATA_ADD_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) __appldata_vtimer_setup(APPLDATA_DEL_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) spin_unlock(&appldata_timer_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) * appldata_interval_handler()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) * Set (CPU) timer interval for collection of data (in milliseconds), show
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * current timer interval.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) appldata_interval_handler(struct ctl_table *ctl, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) void *buffer, size_t *lenp, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) int interval = appldata_interval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) struct ctl_table ctl_entry = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) .procname = ctl->procname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) .data = &interval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) .extra1 = SYSCTL_ONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) rc = proc_dointvec_minmax(&ctl_entry, write, buffer, lenp, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) if (rc < 0 || !write)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) spin_lock(&appldata_timer_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) appldata_interval = interval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) __appldata_vtimer_setup(APPLDATA_MOD_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) spin_unlock(&appldata_timer_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) * appldata_generic_handler()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * Generic start/stop monitoring and DIAG, show status of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) * monitoring (0 = not in process, 1 = in process)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) appldata_generic_handler(struct ctl_table *ctl, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) void *buffer, size_t *lenp, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) struct appldata_ops *ops = NULL, *tmp_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) struct list_head *lh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) int rc, found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) int active;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) struct ctl_table ctl_entry = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) .data = &active,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) .extra1 = SYSCTL_ZERO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) .extra2 = SYSCTL_ONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) found = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) mutex_lock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) list_for_each(lh, &appldata_ops_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) tmp_ops = list_entry(lh, struct appldata_ops, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) if (&tmp_ops->ctl_table[2] == ctl) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) found = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) if (!found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) mutex_unlock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) ops = ctl->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (!try_module_get(ops->owner)) { // protect this function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) mutex_unlock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) mutex_unlock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) active = ops->active;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) rc = proc_douintvec_minmax(&ctl_entry, write, buffer, lenp, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (rc < 0 || !write) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) module_put(ops->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) mutex_lock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if (active && (ops->active == 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) // protect work queue callback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (!try_module_get(ops->owner)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) mutex_unlock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) module_put(ops->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) ops->callback(ops->data); // init record
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) rc = appldata_diag(ops->record_nr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) APPLDATA_START_INTERVAL_REC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) (unsigned long) ops->data, ops->size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) ops->mod_lvl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) if (rc != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) pr_err("Starting the data collection for %s "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) "failed with rc=%d\n", ops->name, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) module_put(ops->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) ops->active = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) } else if (!active && (ops->active == 1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) ops->active = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) rc = appldata_diag(ops->record_nr, APPLDATA_STOP_REC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) (unsigned long) ops->data, ops->size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) ops->mod_lvl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) if (rc != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) pr_err("Stopping the data collection for %s "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) "failed with rc=%d\n", ops->name, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) module_put(ops->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) mutex_unlock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) module_put(ops->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) /*************************** /proc stuff <END> *******************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) /************************* module-ops management *****************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) * appldata_register_ops()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) * update ops list, register /proc/sys entries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) int appldata_register_ops(struct appldata_ops *ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) if (ops->size > APPLDATA_MAX_REC_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) ops->ctl_table = kcalloc(4, sizeof(struct ctl_table), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) if (!ops->ctl_table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) mutex_lock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) list_add(&ops->list, &appldata_ops_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) mutex_unlock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) ops->ctl_table[0].procname = appldata_proc_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) ops->ctl_table[0].maxlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) ops->ctl_table[0].mode = S_IRUGO | S_IXUGO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) ops->ctl_table[0].child = &ops->ctl_table[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) ops->ctl_table[2].procname = ops->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) ops->ctl_table[2].mode = S_IRUGO | S_IWUSR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) ops->ctl_table[2].proc_handler = appldata_generic_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) ops->ctl_table[2].data = ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) ops->sysctl_header = register_sysctl_table(ops->ctl_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if (!ops->sysctl_header)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) mutex_lock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) list_del(&ops->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) mutex_unlock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) kfree(ops->ctl_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) * appldata_unregister_ops()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) * update ops list, unregister /proc entries, stop DIAG if necessary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) void appldata_unregister_ops(struct appldata_ops *ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) mutex_lock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) list_del(&ops->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) mutex_unlock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) unregister_sysctl_table(ops->sysctl_header);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) kfree(ops->ctl_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) /********************** module-ops management <END> **************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) /**************************** suspend / resume *******************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) static int appldata_freeze(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) struct appldata_ops *ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) struct list_head *lh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) spin_lock(&appldata_timer_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) if (appldata_timer_active) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) __appldata_vtimer_setup(APPLDATA_DEL_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) appldata_timer_suspended = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) spin_unlock(&appldata_timer_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) mutex_lock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) list_for_each(lh, &appldata_ops_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) ops = list_entry(lh, struct appldata_ops, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) if (ops->active == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) rc = appldata_diag(ops->record_nr, APPLDATA_STOP_REC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) (unsigned long) ops->data, ops->size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) ops->mod_lvl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) if (rc != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) pr_err("Stopping the data collection for %s "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) "failed with rc=%d\n", ops->name, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) mutex_unlock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) static int appldata_restore(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) struct appldata_ops *ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) struct list_head *lh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) spin_lock(&appldata_timer_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) if (appldata_timer_suspended) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) __appldata_vtimer_setup(APPLDATA_ADD_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) appldata_timer_suspended = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) spin_unlock(&appldata_timer_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) mutex_lock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) list_for_each(lh, &appldata_ops_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) ops = list_entry(lh, struct appldata_ops, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) if (ops->active == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) ops->callback(ops->data); // init record
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) rc = appldata_diag(ops->record_nr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) APPLDATA_START_INTERVAL_REC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) (unsigned long) ops->data, ops->size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) ops->mod_lvl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) if (rc != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) pr_err("Starting the data collection for %s "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) "failed with rc=%d\n", ops->name, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) mutex_unlock(&appldata_ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) static int appldata_thaw(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) return appldata_restore(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) static const struct dev_pm_ops appldata_pm_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) .freeze = appldata_freeze,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) .thaw = appldata_thaw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) .restore = appldata_restore,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) static struct platform_driver appldata_pdrv = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) .name = "appldata",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) .pm = &appldata_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) /************************* suspend / resume <END> ****************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) /******************************* init / exit *********************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) * appldata_init()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) * init timer, register /proc entries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) static int __init appldata_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) init_virt_timer(&appldata_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) appldata_timer.function = appldata_timer_function;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) appldata_timer.data = (unsigned long) &appldata_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) rc = platform_driver_register(&appldata_pdrv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) appldata_pdev = platform_device_register_simple("appldata", -1, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) if (IS_ERR(appldata_pdev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) rc = PTR_ERR(appldata_pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) goto out_driver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) appldata_wq = alloc_ordered_workqueue("appldata", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) if (!appldata_wq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) goto out_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) appldata_sysctl_header = register_sysctl_table(appldata_dir_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) out_device:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) platform_device_unregister(appldata_pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) out_driver:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) platform_driver_unregister(&appldata_pdrv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) __initcall(appldata_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) /**************************** init / exit <END> ******************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) EXPORT_SYMBOL_GPL(appldata_register_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) EXPORT_SYMBOL_GPL(appldata_unregister_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) EXPORT_SYMBOL_GPL(appldata_diag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) #ifdef CONFIG_SWAP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) EXPORT_SYMBOL_GPL(si_swapinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) EXPORT_SYMBOL_GPL(nr_threads);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) EXPORT_SYMBOL_GPL(nr_running);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) EXPORT_SYMBOL_GPL(nr_iowait);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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