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#include <linux/proc_fs.h>
#include <linux/sched.h>
#include <linux/seq_file.h>
#include <linux/kallsyms.h>
#include <linux/utsname.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/uaccess.h>
#define SEQ_printf(m, x...) \
do { \
if (m) \
seq_printf(m, x); \
else \
pr_err(x); \
} while (0)
#define MTSCHED_DEBUG_ENTRY(name) \
static int mt_##name##_open(struct inode *inode, struct file *file) \
{ \
return single_open(file, mt_##name##_show, inode->i_private); \
} \
\
static const struct file_operations mt_##name##_fops = { \
.open = mt_##name##_open, \
.write = mt_##name##_write,\
.read = seq_read, \
.llseek = seq_lseek, \
.release = single_release, \
}
#define BOOT_STR_SIZE 128
#ifdef CONFIG_MT_ENG_BUILD
#define BOOT_LOG_NUM 64
#else
#define BOOT_LOG_NUM 48
#endif
struct boot_log_struct {
u64 timestamp;
char event[BOOT_STR_SIZE];
} mt_bootprof[BOOT_LOG_NUM];
int boot_log_count = 0;
static DEFINE_MUTEX(mt_bootprof_lock);
static int mt_bootprof_enabled = 0;
static int bootprof_lk_t = 0, bootprof_pl_t = 0;
extern unsigned int gpt_boot_time(void);
extern void mt_cputime_switch(int on);
int boot_finish = 0;
module_param_named(pl_t, bootprof_pl_t, int, S_IRUGO | S_IWUSR);
module_param_named(lk_t, bootprof_lk_t, int, S_IRUGO | S_IWUSR);
/*
* Ease the printing of nsec fields:
*/
static long long nsec_high(unsigned long long nsec)
{
if ((long long)nsec < 0) {
nsec = -nsec;
do_div(nsec, 1000000);
return -nsec;
}
do_div(nsec, 1000000);
return nsec;
}
static unsigned long nsec_low(unsigned long long nsec)
{
if ((long long)nsec < 0)
nsec = -nsec;
return do_div(nsec, 1000000);
}
#define SPLIT_NS(x) nsec_high(x), nsec_low(x)
void log_boot(char *str)
{
unsigned long long ts;
if (0 == mt_bootprof_enabled)
return;
ts = sched_clock();
pr_err("BOOTPROF:%10Ld.%06ld:%s\n", SPLIT_NS(ts), str);
if(strncmp("BOOT_Animation:START", str, 20) == 0)
{
mt_cputime_switch(1);
}
if(strncmp("BOOT_Animation:END", str, 17) == 0)
{
mt_cputime_switch(0);
}
if(boot_log_count >= BOOT_LOG_NUM)
{
pr_err("[BOOTPROF] not enuough bootprof buffer\n");
return;
}
mutex_lock(&mt_bootprof_lock);
mt_bootprof[boot_log_count].timestamp = ts;
strcpy((char *)&mt_bootprof[boot_log_count].event, str);
boot_log_count++;
mutex_unlock(&mt_bootprof_lock);
}
#ifdef CONFIG_MT_PRINTK_UART_CONSOLE
extern void mt_disable_uart(void);
static void bootup_finish(void)
{
mt_disable_uart();
}
#else
static void bootup_finish(void)
{
}
#endif
/* extern void (*set_intact_mode)(void); */
static void mt_bootprof_switch(int on)
{
mutex_lock(&mt_bootprof_lock);
if (mt_bootprof_enabled ^ on) {
if (on) {
mt_bootprof_enabled = 1;
} else { /* boot up complete */
mt_bootprof_enabled = 0;
boot_finish = 1;
bootup_finish();
}
}
mutex_unlock(&mt_bootprof_lock);
}
static ssize_t mt_bootprof_write(struct file *filp, const char *ubuf, size_t cnt, loff_t *data)
{
char buf[BOOT_STR_SIZE];
size_t copy_size = cnt;
if (cnt >= sizeof(buf))
copy_size = BOOT_STR_SIZE - 1;
if (copy_from_user(&buf, ubuf, copy_size))
return -EFAULT;
if (cnt == 1) {
if (buf[0] == '0')
mt_bootprof_switch(0);
else if (buf[0] == '1')
mt_bootprof_switch(1);
return 1;
}
buf[copy_size] = 0;
log_boot(buf);
return cnt;
}
static int mt_bootprof_show(struct seq_file *m, void *v)
{
int i;
SEQ_printf(m, "----------------------------------------\n");
SEQ_printf(m, "%d BOOT PROF (unit:msec)\n", mt_bootprof_enabled);
SEQ_printf(m, "----------------------------------------\n");
if (bootprof_pl_t > 0 && bootprof_lk_t > 0) {
SEQ_printf(m, "%10d : %s\n", bootprof_pl_t, "preloader");
SEQ_printf(m, "%10d : %s\n", bootprof_lk_t, "lk");
SEQ_printf(m, "%10d : %s\n",
gpt_boot_time() - bootprof_pl_t - bootprof_lk_t, "lk->Kernel");
SEQ_printf(m, "----------------------------------------\n");
}
for (i = 0; i < boot_log_count; i++) {
SEQ_printf(m, "%10Ld.%06ld : %s\n", SPLIT_NS(mt_bootprof[i].timestamp),
mt_bootprof[i].event);
}
SEQ_printf(m, "----------------------------------------\n");
return 0;
}
/*** Seq operation of mtprof ****/
/* MTSCHED_DEBUG_ENTRY(bootprof); */
static int mt_bootprof_open(struct inode *inode, struct file *file)
{
return single_open(file, mt_bootprof_show, inode->i_private);
}
static const struct file_operations mt_bootprof_fops = {
.open = mt_bootprof_open,
.write = mt_bootprof_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int __init init_boot_prof(void)
{
struct proc_dir_entry *pe;
pe = proc_create("bootprof", 0664, NULL, &mt_bootprof_fops);
if (!pe)
return -ENOMEM;
/* set_intact_mode = NULL; */
mt_bootprof_switch(1);
return 0;
}
__initcall(init_boot_prof);
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