Contributors: 21
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Tejun Heo |
91 |
29.93% |
5 |
14.71% |
| Stephen Boyd |
31 |
10.20% |
1 |
2.94% |
| Andrew Morton |
28 |
9.21% |
3 |
8.82% |
| Alexander Potapenko |
25 |
8.22% |
1 |
2.94% |
| Arjan van de Ven |
25 |
8.22% |
1 |
2.94% |
| Linus Torvalds (pre-git) |
20 |
6.58% |
2 |
5.88% |
| Alex Thorlton |
17 |
5.59% |
1 |
2.94% |
| Alexander van Heukelum |
16 |
5.26% |
3 |
8.82% |
| Eric Dumazet |
11 |
3.62% |
1 |
2.94% |
| Dave Young |
11 |
3.62% |
2 |
5.88% |
| Andi Kleen |
10 |
3.29% |
3 |
8.82% |
| Chris Zankel |
3 |
0.99% |
1 |
2.94% |
| Jiri Olsa |
3 |
0.99% |
1 |
2.94% |
| Ingo Molnar |
3 |
0.99% |
1 |
2.94% |
| Linus Torvalds |
2 |
0.66% |
1 |
2.94% |
| Dmitry Safonov |
2 |
0.66% |
2 |
5.88% |
| John Ogness |
2 |
0.66% |
1 |
2.94% |
| Randy Dunlap |
1 |
0.33% |
1 |
2.94% |
| Paul Gortmaker |
1 |
0.33% |
1 |
2.94% |
| Peter Zijlstra |
1 |
0.33% |
1 |
2.94% |
| Greg Kroah-Hartman |
1 |
0.33% |
1 |
2.94% |
| Total |
304 |
|
34 |
|
// SPDX-License-Identifier: GPL-2.0
/*
* Provide a default dump_stack() function for architectures
* which don't implement their own.
*/
#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];
/**
* dump_stack_set_arch_desc - set arch-specific str to show with task dumps
* @fmt: printf-style format string
* @...: arguments for the format string
*
* The configured string will be printed right after utsname during task
* dumps. Usually used to add arch-specific system identifiers. If an
* arch wants to make use of such an ID string, it should initialize this
* as soon as possible during boot.
*/
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
/**
* dump_stack_print_info - print generic debug info for dump_stack()
* @log_lvl: log level
*
* Arch-specific dump_stack() implementations can use this function to
* print out the same debug information as the generic dump_stack().
*/
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);
}
/**
* show_regs_print_info - print generic debug info for show_regs()
* @log_lvl: log level
*
* show_regs() implementations can use this function to print out generic
* debug information.
*/
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);
}
/**
* dump_stack_lvl - dump the current task information and its stack trace
* @log_lvl: log level
*
* Architectures can override this implementation by implementing its own.
*/
asmlinkage __visible void dump_stack_lvl(const char *log_lvl)
{
unsigned long flags;
/*
* Permit this cpu to perform nested stack dumps while serialising
* against other CPUs
*/
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(dump_stack);