static ssize_t profiling_record_write(struct file *filp, const char __user *ubuf, size_t cnt, loff_t *ppos)
{
char buf[64];
unsigned long val;
int ret;
if (cnt >= sizeof(buf)) {
return -EINVAL;
}
if (copy_from_user(&buf, ubuf, cnt)) {
return -EFAULT;
}
buf[cnt] = 0;
ret = kstrtoul(buf, 10, &val);
if (ret < 0) {
return ret;
}
if (val != 0) {
u32 limit = MALI_PROFILING_MAX_BUFFER_ENTRIES; /* This can be made configurable at a later stage if we need to */
/* check if we are already recording */
if (MALI_TRUE == _mali_internal_profiling_is_recording()) {
MALI_DEBUG_PRINT(3, ("Recording of profiling events already in progress\n"));
return -EFAULT;
}
/* check if we need to clear out an old recording first */
if (MALI_TRUE == _mali_internal_profiling_have_recording()) {
if (_MALI_OSK_ERR_OK != _mali_internal_profiling_clear()) {
MALI_DEBUG_PRINT(3, ("Failed to clear existing recording of profiling events\n"));
return -EFAULT;
}
}
/* start recording profiling data */
if (_MALI_OSK_ERR_OK != _mali_internal_profiling_start(&limit)) {
MALI_DEBUG_PRINT(3, ("Failed to start recording of profiling events\n"));
return -EFAULT;
}
MALI_DEBUG_PRINT(3, ("Profiling recording started (max %u events)\n", limit));
} else {
/* stop recording profiling data */
u32 count = 0;
if (_MALI_OSK_ERR_OK != _mali_internal_profiling_stop(&count)) {
MALI_DEBUG_PRINT(2, ("Failed to stop recording of profiling events\n"));
return -EFAULT;
}
MALI_DEBUG_PRINT(2, ("Profiling recording stopped (recorded %u events)\n", count));
}
*ppos += cnt;
return cnt;
}
_mali_osk_errcode_t _mali_internal_profiling_init(mali_bool auto_start)
{
profile_entries = NULL;
profile_mask = 0;
_mali_osk_atomic_init(&profile_insert_index, 0);
lock = _mali_osk_mutex_init(_MALI_OSK_LOCKFLAG_ORDERED, _MALI_OSK_LOCK_ORDER_PROFILING);
if (NULL == lock) {
return _MALI_OSK_ERR_FAULT;
}
prof_state = MALI_PROFILING_STATE_IDLE;
if (MALI_TRUE == auto_start) {
u32 limit = MALI_PROFILING_MAX_BUFFER_ENTRIES; /* Use maximum buffer size */
mali_set_user_setting(_MALI_UK_USER_SETTING_SW_EVENTS_ENABLE, MALI_TRUE);
if (_MALI_OSK_ERR_OK != _mali_internal_profiling_start(&limit)) {
return _MALI_OSK_ERR_FAULT;
}
}
return _MALI_OSK_ERR_OK;
}
