static void unwind_dump(struct unwind_state *state, unsigned long *sp)
{
static bool dumped_before = false;
bool prev_zero, zero = false;
unsigned long word;
if (dumped_before)
return;
dumped_before = true;
printk_deferred("unwind stack type:%d next_sp:%p mask:%lx graph_idx:%d\n",
state->stack_info.type, state->stack_info.next_sp,
state->stack_mask, state->graph_idx);
for (sp = state->orig_sp; sp < state->stack_info.end; sp++) {
word = READ_ONCE_NOCHECK(*sp);
prev_zero = zero;
zero = word == 0;
if (zero) {
if (!prev_zero)
printk_deferred("%p: %016x ...\n", sp, 0);
continue;
}
printk_deferred("%p: %016lx (%pB)\n", sp, word, (void *)word);
}
}
static void ShowStatus (void) {
struct task_struct * task ;
for_each_process(task) {
printk_deferred("[Hang_Detect] %s found:%d.,RT[%lld]\n", task->comm, task->pid, sched_clock());
show_stack(task,NULL) ;
}
}
static void unwind_dump(struct unwind_state *state)
{
static bool dumped_before = false;
bool prev_zero, zero = false;
unsigned long word, *sp;
struct stack_info stack_info = {0};
unsigned long visit_mask = 0;
if (dumped_before)
return;
dumped_before = true;
printk_deferred("unwind stack type:%d next_sp:%p mask:0x%lx graph_idx:%d\n",
state->stack_info.type, state->stack_info.next_sp,
state->stack_mask, state->graph_idx);
for (sp = state->orig_sp; sp; sp = PTR_ALIGN(stack_info.next_sp, sizeof(long))) {
if (get_stack_info(sp, state->task, &stack_info, &visit_mask))
break;
for (; sp < stack_info.end; sp++) {
word = READ_ONCE_NOCHECK(*sp);
prev_zero = zero;
zero = word == 0;
if (zero) {
if (!prev_zero)
printk_deferred("%p: %0*x ...\n",
sp, BITS_PER_LONG/4, 0);
continue;
}
printk_deferred("%p: %0*lx (%pB)\n",
sp, BITS_PER_LONG/4, word, (void *)word);
}
}
}
int aee_kernel_wdt_kick_api(int kinterval)
{
int ret=0;
#ifdef CONFIG_MTK_AEE_POWERKEY_HANG_DETECT
if(pwk_start_monitor &&(get_boot_mode()==NORMAL_BOOT)&&(FindTaskByName("system_server")!=-1) )
{
//Only in normal_boot!
printk_deferred("Press powerkey!! g_boot_mode=%d,wdt_kick_status=0x%x,tickTimes=0x%x,g_kinterval=%d,RT[%lld]\n",get_boot_mode(),wdt_kick_status,hwt_kick_times,kinterval,sched_clock());
hwt_kick_times++;
if((kinterval*hwt_kick_times > 180))//only monitor 3 min
{
pwk_start_monitor=0;
//check all modules is ok~~~
if( (wdt_kick_status& (WDT_SETBY_Display|WDT_SETBY_SF))!= (WDT_SETBY_Display|WDT_SETBY_SF))
{
#ifdef CONFIG_MT_ENG_BUILD
ShowStatus() ;//catch task kernel bt
printk_deferred("[WDK] Powerkey Tick fail,kick_status 0x%08x,RT[%lld]\n ", wdt_kick_status,sched_clock());
aee_kernel_warning("\nCR_DISPATCH_KEY:UI Hang(Powerkey)\n", "Powerkey Monitor");
#else
ShowStatus() ;//catch task kernel bt
printk_deferred("[WDK] Powerkey Tick fail,kick_status 0x%08x,RT[%lld]\n ", wdt_kick_status,sched_clock());
ret=WDT_PWK_HANG_FORCE_HWT; //trigger HWT
#endif
}
}
if( (wdt_kick_status& (WDT_SETBY_Display|WDT_SETBY_SF))== (WDT_SETBY_Display|WDT_SETBY_SF))
{
pwk_start_monitor=0;
printk_deferred("[WDK] Powerkey Tick ok,kick_status 0x%08x,RT[%lld]\n ", wdt_kick_status,sched_clock());
}
}
#endif
return ret;
}
void psi_task_change(struct task_struct *task, int clear, int set)
{
int cpu = task_cpu(task);
struct psi_group *group;
bool wake_clock = true;
void *iter = NULL;
if (!task->pid)
return;
if (((task->psi_flags & set) ||
(task->psi_flags & clear) != clear) &&
!psi_bug) {
printk_deferred(KERN_ERR "psi: inconsistent task state! task=%d:%s cpu=%d psi_flags=%x clear=%x set=%x\n",
task->pid, task->comm, cpu,
task->psi_flags, clear, set);
psi_bug = 1;
}
task->psi_flags &= ~clear;
task->psi_flags |= set;
/*
* Periodic aggregation shuts off if there is a period of no
* task changes, so we wake it back up if necessary. However,
* don't do this if the task change is the aggregation worker
* itself going to sleep, or we'll ping-pong forever.
*/
if (unlikely((clear & TSK_RUNNING) &&
(task->flags & PF_WQ_WORKER) &&
wq_worker_last_func(task) == psi_update_work))
wake_clock = false;
while ((group = iterate_groups(task, &iter))) {
psi_group_change(group, cpu, clear, set);
if (wake_clock && !delayed_work_pending(&group->clock_work))
schedule_delayed_work(&group->clock_work, PSI_FREQ);
}
}
static void psi_group_change(struct psi_group *group, int cpu,
unsigned int clear, unsigned int set)
{
struct psi_group_cpu *groupc;
unsigned int t, m;
groupc = per_cpu_ptr(group->pcpu, cpu);
/*
* First we assess the aggregate resource states this CPU's
* tasks have been in since the last change, and account any
* SOME and FULL time these may have resulted in.
*
* Then we update the task counts according to the state
* change requested through the @clear and @set bits.
*/
write_seqcount_begin(&groupc->seq);
record_times(groupc, cpu, false);
for (t = 0, m = clear; m; m &= ~(1 << t), t++) {
if (!(m & (1 << t)))
continue;
if (groupc->tasks[t] == 0 && !psi_bug) {
printk_deferred(KERN_ERR "psi: task underflow! cpu=%d t=%d tasks=[%u %u %u] clear=%x set=%x\n",
cpu, t, groupc->tasks[0],
groupc->tasks[1], groupc->tasks[2],
clear, set);
psi_bug = 1;
}
groupc->tasks[t]--;
}
for (t = 0; set; set &= ~(1 << t), t++)
if (set & (1 << t))
groupc->tasks[t]++;
write_seqcount_end(&groupc->seq);
}
static int kwdt_thread(void *arg)
{
struct sched_param param = {.sched_priority = RTPM_PRIO_WDT };
struct rtc_time tm;
struct timeval tv = { 0 };
/* android time */
struct rtc_time tm_android;
struct timeval tv_android = { 0 };
int cpu = 0;
int local_bit = 0, loc_need_config = 0, loc_timeout = 0;
struct wd_api *loc_wk_wdt = NULL;
sched_setscheduler(current, SCHED_FIFO, ¶m);
set_current_state(TASK_INTERRUPTIBLE);
for (;;) {
if (kthread_should_stop())
break;
spin_lock(&lock);
cpu = smp_processor_id();
loc_wk_wdt = g_wd_api;
loc_need_config = g_need_config;
loc_timeout = g_timeout;
spin_unlock(&lock);
/* printk("fwq loc_wk_wdt(%x),loc_wk_wdt->ready(%d)\n",loc_wk_wdt ,loc_wk_wdt->ready); */
if (loc_wk_wdt && loc_wk_wdt->ready && g_enable) {
if (loc_need_config) {
/* daul mode */
loc_wk_wdt->wd_config(WDT_DUAL_MODE, loc_timeout);
spin_lock(&lock);
g_need_config = 0;
spin_unlock(&lock);
}
/* printk("[WDK] cpu-task=%d, current_pid=%d\n", wk_tsk[cpu]->pid, current->pid); */
if (wk_tsk[cpu]->pid == current->pid) {
/* only process WDT info if thread-x is on cpu-x */
spin_lock(&lock);
local_bit = kick_bit;
printk_deferred("[WDK], local_bit:0x%x, cpu:%d,RT[%lld]\n", local_bit,
cpu, sched_clock());
if ((local_bit & (1 << cpu)) == 0) {
/* printk("[WDK]: set WDT kick_bit\n"); */
local_bit |= (1 << cpu);
/* aee_rr_rec_wdk_kick_jiffies(jiffies); */
}
printk_deferred("[WDK], local_bit:0x%x, cpu:%d, check bit0x:%x,RT[%lld]\n",
local_bit, cpu, wk_check_kick_bit(), sched_clock());
if (local_bit == wk_check_kick_bit()) {
printk_deferred("[WDK]: kick Ex WDT,RT[%lld]\n",
sched_clock());
mtk_wdt_restart(WD_TYPE_NORMAL); /* for KICK external wdt */
local_bit = 0;
}
kick_bit = local_bit;
spin_unlock(&lock);
#ifdef CONFIG_LOCAL_WDT
printk_deferred("[WDK]: cpu:%d, kick local wdt,RT[%lld]\n", cpu,
sched_clock());
/* kick local wdt */
mpcore_wdt_restart(WD_TYPE_NORMAL);
#endif
}
} else if (0 == g_enable) {
printk("WDK stop to kick\n");
} else {
errmsg("No watch dog driver is hooked\n");
BUG();
}
if (wk_tsk[cpu]->pid == current->pid) {
#if (DEBUG_WDK == 1)
msleep(debug_sleep * 1000);
dbgmsg("WD kicker woke up %d\n", debug_sleep);
#endif
do_gettimeofday(&tv);
tv_android = tv;
rtc_time_to_tm(tv.tv_sec, &tm);
tv_android.tv_sec -= sys_tz.tz_minuteswest * 60;
rtc_time_to_tm(tv_android.tv_sec, &tm_android);
printk_deferred("[thread:%d][RT:%lld] %d-%02d-%02d %02d:%02d:%02d.%u UTC; android time %d-%02d-%02d %02d:%02d:%02d.%03d\n",
current->pid, sched_clock(), tm.tm_year + 1900, tm.tm_mon + 1,
tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec, (unsigned int)tv.tv_usec,
tm_android.tm_year + 1900, tm_android.tm_mon + 1, tm_android.tm_mday,
tm_android.tm_hour, tm_android.tm_min, tm_android.tm_sec,
(unsigned int)tv_android.tv_usec);
}
msleep((g_kinterval) * 1000);
#ifdef CONFIG_MTK_AEE_POWERKEY_HANG_DETECT
if ((cpu == 0) && (wk_tsk[cpu]->pid == current->pid)) /* only effect at cpu0 */
{
if (aee_kernel_wdt_kick_api(g_kinterval) == WDT_PWK_HANG_FORCE_HWT) {
printk_deferred("power key trigger HWT\n");
cpus_kick_bit = 0xFFFF; /* Try to force to HWT */
}
}
#endif
}
printk("[WDK] WDT kicker thread stop, cpu:%d, pid:%d\n", cpu, current->pid);
return 0;
}