#include <linux/kernel.h>
#include <linux/buildid.h>
#include <linux/export.h>
#include <linux/sched.h>
#include <linux/sched/debug.h>
#include <linux/smp.h>
#include <linux/atomic.h>
#include <linux/kexec.h>
#include <linux/utsname.h>
#include <linux/stop_machine.h>
static char dump_stack_arch_desc_str[128];
void __init dump_stack_set_arch_desc(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vsnprintf(dump_stack_arch_desc_str, sizeof(dump_stack_arch_desc_str),
fmt, args);
va_end(args);
}
#if IS_ENABLED(CONFIG_STACKTRACE_BUILD_ID)
#define BUILD_ID_FMT " %20phN"
#define BUILD_ID_VAL vmlinux_build_id
#else
#define BUILD_ID_FMT "%s"
#define BUILD_ID_VAL ""
#endif
void dump_stack_print_info(const char *log_lvl)
{
printk("%sCPU: %d PID: %d Comm: %.20s %s%s %s %.*s" BUILD_ID_FMT "\n",
log_lvl, raw_smp_processor_id(), current->pid, current->comm,
kexec_crash_loaded() ? "Kdump: loaded " : "",
print_tainted(),
init_utsname()->release,
(int)strcspn(init_utsname()->version, " "),
init_utsname()->version, BUILD_ID_VAL);
if (dump_stack_arch_desc_str[0] != '\0')
printk("%sHardware name: %s\n",
log_lvl, dump_stack_arch_desc_str);
print_worker_info(log_lvl, current);
print_stop_info(log_lvl, current);
}
void show_regs_print_info(const char *log_lvl)
{
dump_stack_print_info(log_lvl);
}
static void __dump_stack(const char *log_lvl)
{
dump_stack_print_info(log_lvl);
show_stack(NULL, NULL, log_lvl);
}
asmlinkage __visible void dump_stack_lvl(const char *log_lvl)
{
unsigned long flags;
printk_cpu_sync_get_irqsave(flags);
__dump_stack(log_lvl);
printk_cpu_sync_put_irqrestore(flags);
}
EXPORT_SYMBOL(dump_stack_lvl);
asmlinkage __visible void dump_stack(void)
{
dump_stack_lvl(KERN_DEFAULT);
}
EXPORT_SYMBOL