static void spin_bug(raw_spinlock_t *lock, const char *msg)
{
if (!debug_locks_off())
return;
spin_dump(lock, msg);
}
static void __spin_lock_debug(raw_spinlock_t *lock)
{
u64 i;
u64 loops = loops_per_jiffy * HZ;
int print_once = 1;
for (;;) {
for (i = 0; i < loops; i++) {
if (arch_spin_trylock(&lock->raw_lock))
return;
__delay(1);
}
/* lockup suspected: */
if (print_once) {
print_once = 0;
printk(KERN_EMERG "BUG: spinlock lockup on CPU#%d, "
"%s/%d, %ps\n",
raw_smp_processor_id(), current->comm,
task_pid_nr(current), lock);
printk(KERN_EMERG "%s: loops_per_jiffy=%lu, HZ=%d, loops=%llu\n", __func__, loops_per_jiffy, HZ, loops); /* Added by HTC */
spin_dump(lock, "lockup");
#ifdef CONFIG_SMP
trigger_all_cpu_backtrace();
#endif
}
}
}
static void __spin_lock_debug(raw_spinlock_t *lock)
{
u64 i;
u64 loops = (loops_per_jiffy * HZ) >> 4;
for (i = 0; i < loops; i++) {
if (arch_spin_trylock(&lock->raw_lock))
return;
__delay(1);
}
/* lockup suspected: */
spin_dump(lock, "lockup");
#ifdef CONFIG_SMP
trigger_all_cpu_backtrace();
#endif
/*
* The trylock above was causing a livelock. Give the lower level arch
* specific lock code a chance to acquire the lock. We have already
* printed a warning/backtrace at this point. The non-debug arch
* specific code might actually succeed in acquiring the lock. If it is
* not successful, the end-result is the same - there is no forward
* progress.
*/
arch_spin_lock(&lock->raw_lock);
}
static void __spin_lock_debug(raw_spinlock_t *lock)
{
u64 i;
u64 loops = loops_per_jiffy * LOOP_HZ;
int print_once = 1;
char aee_str[40];
unsigned long long t1;
t1 = sched_clock();
for (;;) {
for (i = 0; i < loops; i++) {
if (arch_spin_trylock(&lock->raw_lock))
return;
__delay(1);
}
/* lockup suspected: */
printk("spin time: %llu ns(start:%llu ns, lpj:%lu, HZ:%d)", sched_clock() - t1, t1, loops_per_jiffy, (int)LOOP_HZ);
if (print_once) {
print_once = 0;
spin_dump(lock, "lockup");
#ifdef CONFIG_SMP
trigger_all_cpu_backtrace();
#endif
debug_show_all_locks();
sprintf( aee_str, "Spinlock lockup:%s\n", current->comm);
aee_kernel_exception( aee_str,"spinlock debugger\n");
}
}
}
static void spin_bug(raw_spinlock_t *lock, const char *msg)
{
char aee_str[40];
// if (!debug_locks_off())
// return;
spin_dump(lock, msg);
sprintf( aee_str, "Spinlock %s :%s\n", current->comm, msg);
aee_kernel_warning( aee_str,"spinlock debugger\n");
}
static void spin_bug(raw_spinlock_t *lock, const char *msg)
{
char aee_str[50];
// if (!debug_locks_off())
// return;
spin_dump(lock, msg);
snprintf( aee_str, 50, "Spinlock %s :%s\n", current->comm, msg);
aee_kernel_warning_api(__FILE__, __LINE__, DB_OPT_DUMMY_DUMP | DB_OPT_FTRACE, aee_str,"spinlock debugger\n");
}
static void spin_bug(raw_spinlock_t *lock, const char *msg)
{
char aee_str[50];
spin_dump(lock, msg);
snprintf( aee_str, 50, "Spinlock %s :%s\n", current->comm, msg);
if(!strcmp(msg,"bad magic")){
printk("[spin lock debug] bad magic:%08x, should be %08x, may use an un-initial spin_lock or mem corrupt\n", lock->magic, SPINLOCK_MAGIC);
printk(">>>>>>>>>>>>>> Let's KE <<<<<<<<<<<<<<\n");
BUG_ON(1);
}
aee_kernel_warning_api(__FILE__, __LINE__, DB_OPT_DUMMY_DUMP | DB_OPT_FTRACE, aee_str,"spinlock debugger\n");
#ifdef CONFIG_PANIC_ON_DEBUG_SPINLOCK
panic("Please check this spin bug warning! if it is okay, disable CONFIG_PANIC_ON_DEBUG_SPINLOCK and ignore this warning!\n");
#endif
}
static void spin_bug(raw_spinlock_t *lock, const char *msg)
{
char aee_str[50];
// if (!debug_locks_off())
// return;
spin_dump(lock, msg);
snprintf( aee_str, 50, "Spinlock %s :%s\n", current->comm, msg);
if(!strcmp(msg,"bad magic")){
printk("[spin lock debug] bad magic:%08x, should be %08x, may use an un-initial spin_lock or mem corrupt\n", lock->magic, SPINLOCK_MAGIC);
printk(">>>>>>>>>>>>>> Let's KE <<<<<<<<<<<<<<\n");
BUG_ON(1);
}
aee_kernel_warning_api(__FILE__, __LINE__, DB_OPT_DUMMY_DUMP | DB_OPT_FTRACE, aee_str,"spinlock debugger\n");
}
static void __spin_lock_debug(raw_spinlock_t *lock)
{
u64 i;
u64 loops = loops_per_jiffy * HZ;
int print_once = 1;
for (;;) {
for (i = 0; i < loops; i++) {
if (arch_spin_trylock(&lock->raw_lock))
return;
__delay(1);
}
/* lockup suspected: */
if (print_once) {
print_once = 0;
spin_dump(lock, "lockup");
#ifdef CONFIG_SMP
trigger_all_cpu_backtrace();
#endif
}
}
}
static void __spin_lock_debug(raw_spinlock_t *lock)
{
#ifdef CONFIG_MTK_MUTATION
u64 i;
u64 loops = loops_per_jiffy * LOOP_HZ;
int print_once = 1;
char aee_str[50];
unsigned long long t1,t2;
t1 = sched_clock();
t2 = t1;
for (;;) {
for (i = 0; i < loops; i++) {
if (arch_spin_trylock(&lock->raw_lock))
return;
__delay(1);
}
if(sched_clock() - t2 < WARNING_TIME) continue;
t2 = sched_clock();
if(oops_in_progress != 0) continue; // in exception follow, printk maybe spinlock error
/* lockup suspected: */
printk("spin time: %llu ns(start:%llu ns, lpj:%lu, LPHZ:%d), value: 0x%08x\n", sched_clock() - t1, t1, loops_per_jiffy, (int)LOOP_HZ, lock->raw_lock.slock);
if (print_once) {
print_once = 0;
spin_dump(lock, "lockup suspected");
#ifdef CONFIG_SMP
trigger_all_cpu_backtrace();
#endif
debug_show_all_locks();
snprintf( aee_str, 50, "Spinlock lockup:%s\n", current->comm);
aee_kernel_warning_api(__FILE__, __LINE__, DB_OPT_DUMMY_DUMP | DB_OPT_FTRACE, aee_str,"spinlock debugger\n");
#ifdef CONFIG_PANIC_ON_DEBUG_SPINLOCK
panic("Please check this spin_lock bug warning! if it is okay, disable CONFIG_PANIC_ON_DEBUG_SPINLOCK and ignore this warning!\n");
#endif
}
}
#else //CONFIG_MTK_MUTATION
u64 i;
u64 loops = loops_per_jiffy * HZ;
for (i = 0; i < loops; i++) {
if (arch_spin_trylock(&lock->raw_lock))
return;
__delay(1);
}
/* lockup suspected: */
spin_dump(lock, "lockup suspected");
#ifdef CONFIG_SMP
trigger_all_cpu_backtrace();
#endif
/*
* The trylock above was causing a livelock. Give the lower level arch
* specific lock code a chance to acquire the lock. We have already
* printed a warning/backtrace at this point. The non-debug arch
* specific code might actually succeed in acquiring the lock. If it is
* not successful, the end-result is the same - there is no forward
* progress.
*/
arch_spin_lock(&lock->raw_lock);
#endif //CONFIG_MTK_MUTATION
}
