static void cleanup_kgdboc(void)
{
if (kgdb_unregister_nmi_console())
return;
kgdboc_unregister_kbd();
if (configured == 1)
kgdb_unregister_io_module(&kgdboc_io_ops);
else if (configured == 2)
kgdb_unregister_io_module(&kgdboc_io_ops_console);
}
static void cleanup_kgdboe(void)
{
netpoll_cleanup(&np);
configured = 0;
kgdb_unregister_io_module(&local_kgdb_io_ops);
}
static int kgdbts_unreg_thread(void *ptr)
{
/* Wait until the tests are complete and then ungresiter the I/O
* driver.
*/
while (!final_ack)
msleep_interruptible(1500);
if (configured)
kgdb_unregister_io_module(&kgdbts_io_ops);
configured = 0;
return 0;
}
void kgdboe_io_cleanup(void)
{
/*
We don't check for race conditions between running code by other cores and unloading the module!
There is always a small chance that unloading this module would cause a kernel panic because
another core is executing a function hooked by us. As normally you don't need to load/unload this
module all the time (just execute the 'detach' command in GDB and connect back when ready), we
don't check for it here.
*/
kgdb_unregister_io_module(&kgdboe_io_ops);
netpoll_wrapper_free(s_pKgdboeNetpoll);
nethook_cleanup();
s_pKgdboeNetpoll = NULL;
}
static void kgdbts_run_tests(void)
{
char *ptr;
int fork_test = 0;
int do_sys_open_test = 0;
int sstep_test = 1000;
int nmi_sleep = 0;
int i;
ptr = strchr(config, 'F');
if (ptr)
fork_test = simple_strtol(ptr + 1, NULL, 10);
ptr = strchr(config, 'S');
if (ptr)
do_sys_open_test = simple_strtol(ptr + 1, NULL, 10);
ptr = strchr(config, 'N');
if (ptr)
nmi_sleep = simple_strtol(ptr+1, NULL, 10);
ptr = strchr(config, 'I');
if (ptr)
sstep_test = simple_strtol(ptr+1, NULL, 10);
/* required internal KGDB tests */
v1printk("kgdbts:RUN plant and detach test\n");
run_plant_and_detach_test(0);
v1printk("kgdbts:RUN sw breakpoint test\n");
run_breakpoint_test(0);
v1printk("kgdbts:RUN bad memory access test\n");
run_bad_read_test();
v1printk("kgdbts:RUN singlestep test %i iterations\n", sstep_test);
for (i = 0; i < sstep_test; i++) {
run_singlestep_break_test();
if (i % 100 == 0)
v1printk("kgdbts:RUN singlestep [%i/%i]\n",
i, sstep_test);
}
/* ===Optional tests=== */
/* All HW break point tests */
if (arch_kgdb_ops.flags & KGDB_HW_BREAKPOINT) {
hwbreaks_ok = 1;
v1printk("kgdbts:RUN hw breakpoint test\n");
run_breakpoint_test(1);
v1printk("kgdbts:RUN hw write breakpoint test\n");
run_hw_break_test(1);
v1printk("kgdbts:RUN access write breakpoint test\n");
run_hw_break_test(0);
}
if (nmi_sleep) {
v1printk("kgdbts:RUN NMI sleep %i seconds test\n", nmi_sleep);
run_nmi_sleep_test(nmi_sleep);
}
#ifdef CONFIG_DEBUG_RODATA
/* Until there is an api to write to read-only text segments, use
* HW breakpoints for the remainder of any tests, else print a
* failure message if hw breakpoints do not work.
*/
if (!(arch_kgdb_ops.flags & KGDB_HW_BREAKPOINT && hwbreaks_ok)) {
eprintk("kgdbts: HW breakpoints do not work,"
"skipping remaining tests\n");
return;
}
force_hwbrks = 1;
#endif /* CONFIG_DEBUG_RODATA */
/* If the do_fork test is run it will be the last test that is
* executed because a kernel thread will be spawned at the very
* end to unregister the debug hooks.
*/
if (fork_test) {
repeat_test = fork_test;
printk(KERN_INFO "kgdbts:RUN do_fork for %i breakpoints\n",
repeat_test);
kthread_run(kgdbts_unreg_thread, NULL, "kgdbts_unreg");
run_do_fork_test();
return;
}
/* If the sys_open test is run it will be the last test that is
* executed because a kernel thread will be spawned at the very
* end to unregister the debug hooks.
*/
if (do_sys_open_test) {
repeat_test = do_sys_open_test;
printk(KERN_INFO "kgdbts:RUN sys_open for %i breakpoints\n",
repeat_test);
kthread_run(kgdbts_unreg_thread, NULL, "kgdbts_unreg");
run_sys_open_test();
return;
}
/* Shutdown and unregister */
kgdb_unregister_io_module(&kgdbts_io_ops);
configured = 0;
}
static void cleanup_kgdbts(void)
{
if (configured == 1)
kgdb_unregister_io_module(&kgdbts_io_ops);
}
static void cleanup_kgdboc(void)
{
kgdboc_unregister_kbd();
if (configured == 1)
kgdb_unregister_io_module(&kgdboc_io_ops);
}
static int configure_kgdboc(void)
{
struct tty_driver *p;
int tty_line = 0;
int err;
char *cptr = config;
struct console *cons;
int is_console = 0;
err = kgdboc_option_setup(config);
if (err || !strlen(config) || isspace(config[0]))
goto noconfig;
err = -ENODEV;
kgdb_tty_driver = NULL;
kgdboc_use_kms = 0;
if (strncmp(cptr, "kms,", 4) == 0) {
cptr += 4;
kgdboc_use_kms = 1;
}
if (kgdboc_register_kbd(&cptr))
goto do_register;
p = tty_find_polling_driver(cptr, &tty_line);
if (!p)
goto noconfig;
cons = console_drivers;
while (cons) {
int idx;
if (cons->device && cons->device(cons, &idx) == p &&
idx == tty_line) {
is_console = 1;
break;
}
cons = cons->next;
}
kgdb_tty_driver = p;
kgdb_tty_line = tty_line;
do_register:
if (is_console) {
err = kgdb_register_io_module(&kgdboc_io_ops_console);
configured = 2;
} else {
err = kgdb_register_io_module(&kgdboc_io_ops);
configured = 1;
}
if (err)
goto noconfig;
err = kgdb_register_nmi_console();
if (err)
goto nmi_con_failed;
return 0;
nmi_con_failed:
kgdb_unregister_io_module(&kgdboc_io_ops);
noconfig:
kgdboc_unregister_kbd();
config[0] = 0;
configured = 0;
cleanup_kgdboc();
return err;
}
static void kgdbts_run_tests(void)
{
char *ptr;
int fork_test = 0;
int do_sys_open_test = 0;
int sstep_test = 1000;
int nmi_sleep = 0;
int i;
ptr = strchr(config, 'F');
if (ptr)
fork_test = simple_strtol(ptr + 1, NULL, 10);
ptr = strchr(config, 'S');
if (ptr)
do_sys_open_test = simple_strtol(ptr + 1, NULL, 10);
ptr = strchr(config, 'N');
if (ptr)
nmi_sleep = simple_strtol(ptr+1, NULL, 10);
ptr = strchr(config, 'I');
if (ptr)
sstep_test = simple_strtol(ptr+1, NULL, 10);
/* All HW break point tests */
if (arch_kgdb_ops.flags & KGDB_HW_BREAKPOINT) {
hwbreaks_ok = 1;
v1printk("kgdbts:RUN hw breakpoint test\n");
run_breakpoint_test(1);
v1printk("kgdbts:RUN hw write breakpoint test\n");
run_hw_break_test(1);
v1printk("kgdbts:RUN access write breakpoint test\n");
run_hw_break_test(0);
}
/* required internal KGDB tests */
v1printk("kgdbts:RUN plant and detach test\n");
run_plant_and_detach_test(0);
v1printk("kgdbts:RUN sw breakpoint test\n");
run_breakpoint_test(0);
v1printk("kgdbts:RUN bad memory access test\n");
run_bad_read_test();
v1printk("kgdbts:RUN singlestep test %i iterations\n", sstep_test);
for (i = 0; i < sstep_test; i++) {
run_singlestep_break_test();
if (i % 100 == 0)
v1printk("kgdbts:RUN singlestep [%i/%i]\n",
i, sstep_test);
}
/* ===Optional tests=== */
if (nmi_sleep) {
v1printk("kgdbts:RUN NMI sleep %i seconds test\n", nmi_sleep);
run_nmi_sleep_test(nmi_sleep);
}
/* If the do_fork test is run it will be the last test that is
* executed because a kernel thread will be spawned at the very
* end to unregister the debug hooks.
*/
if (fork_test) {
repeat_test = fork_test;
printk(KERN_INFO "kgdbts:RUN do_fork for %i breakpoints\n",
repeat_test);
kthread_run(kgdbts_unreg_thread, NULL, "kgdbts_unreg");
run_do_fork_test();
return;
}
/* If the sys_open test is run it will be the last test that is
* executed because a kernel thread will be spawned at the very
* end to unregister the debug hooks.
*/
if (do_sys_open_test) {
repeat_test = do_sys_open_test;
printk(KERN_INFO "kgdbts:RUN sys_open for %i breakpoints\n",
repeat_test);
kthread_run(kgdbts_unreg_thread, NULL, "kgdbts_unreg");
run_sys_open_test();
return;
}
/* Shutdown and unregister */
kgdb_unregister_io_module(&kgdbts_io_ops);
configured = 0;
}
