#include <linux/vt_kern.h>
#include <linux/workqueue.h>
#include <linux/kexec.h>
+#include <linux/irq.h>
#include <asm/ptrace.h>
+#include <asm/irq_regs.h>
/* Whether we react on sysrq keys or just ignore them */
int sysrq_enabled = 1;
-static void sysrq_handle_loglevel(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
+static void sysrq_handle_loglevel(int key, struct tty_struct *tty)
{
int i;
i = key - '0';
};
#ifdef CONFIG_VT
-static void sysrq_handle_SAK(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
+static void sysrq_handle_SAK(int key, struct tty_struct *tty)
{
if (tty)
do_SAK(tty);
#endif
#ifdef CONFIG_VT
-static void sysrq_handle_unraw(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
+static void sysrq_handle_unraw(int key, struct tty_struct *tty)
{
struct kbd_struct *kbd = &kbd_table[fg_console];
#endif /* CONFIG_VT */
#ifdef CONFIG_KEXEC
-static void sysrq_handle_crashdump(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
+static void sysrq_handle_crashdump(int key, struct tty_struct *tty)
{
- crash_kexec(pt_regs);
+ crash_kexec(get_irq_regs());
}
static struct sysrq_key_op sysrq_crashdump_op = {
.handler = sysrq_handle_crashdump,
#define sysrq_crashdump_op (*(struct sysrq_key_op *)0)
#endif
-static void sysrq_handle_reboot(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
+static void sysrq_handle_reboot(int key, struct tty_struct *tty)
{
+ lockdep_off();
local_irq_enable();
emergency_restart();
}
.enable_mask = SYSRQ_ENABLE_BOOT,
};
-static void sysrq_handle_sync(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
+static void sysrq_handle_sync(int key, struct tty_struct *tty)
{
emergency_sync();
}
.enable_mask = SYSRQ_ENABLE_SYNC,
};
-static void sysrq_handle_mountro(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
+static void sysrq_handle_mountro(int key, struct tty_struct *tty)
{
emergency_remount();
}
};
#ifdef CONFIG_LOCKDEP
-static void sysrq_handle_showlocks(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
+static void sysrq_handle_showlocks(int key, struct tty_struct *tty)
{
debug_show_all_locks();
}
#define sysrq_showlocks_op (*(struct sysrq_key_op *)0)
#endif
-static void sysrq_handle_showregs(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
+static void sysrq_handle_showregs(int key, struct tty_struct *tty)
{
- if (pt_regs)
- show_regs(pt_regs);
+ struct pt_regs *regs = get_irq_regs();
+ if (regs)
+ show_regs(regs);
}
static struct sysrq_key_op sysrq_showregs_op = {
.handler = sysrq_handle_showregs,
.enable_mask = SYSRQ_ENABLE_DUMP,
};
-static void sysrq_handle_showstate(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
+static void sysrq_handle_showstate(int key, struct tty_struct *tty)
{
show_state();
}
.enable_mask = SYSRQ_ENABLE_DUMP,
};
-static void sysrq_handle_showmem(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
+static void sysrq_handle_showstate_blocked(int key, struct tty_struct *tty)
+{
+ show_state_filter(TASK_UNINTERRUPTIBLE);
+}
+static struct sysrq_key_op sysrq_showstate_blocked_op = {
+ .handler = sysrq_handle_showstate_blocked,
+ .help_msg = "showBlockedTasks",
+ .action_msg = "Show Blocked State",
+ .enable_mask = SYSRQ_ENABLE_DUMP,
+};
+
+
+static void sysrq_handle_showmem(int key, struct tty_struct *tty)
{
show_mem();
}
struct task_struct *p;
for_each_process(p) {
- if (p->mm && p->pid != 1)
+ if (p->mm && !is_init(p))
/* Not swapper, init nor kernel thread */
force_sig(sig, p);
}
}
-static void sysrq_handle_term(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
+static void sysrq_handle_term(int key, struct tty_struct *tty)
{
send_sig_all(SIGTERM);
console_loglevel = 8;
.enable_mask = SYSRQ_ENABLE_SIGNAL,
};
-static void moom_callback(void *ignored)
+static void moom_callback(struct work_struct *ignored)
{
out_of_memory(&NODE_DATA(0)->node_zonelists[ZONE_NORMAL],
GFP_KERNEL, 0);
}
-static DECLARE_WORK(moom_work, moom_callback, NULL);
+static DECLARE_WORK(moom_work, moom_callback);
-static void sysrq_handle_moom(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
+static void sysrq_handle_moom(int key, struct tty_struct *tty)
{
schedule_work(&moom_work);
}
.action_msg = "Manual OOM execution",
};
-static void sysrq_handle_kill(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
+static void sysrq_handle_kill(int key, struct tty_struct *tty)
{
send_sig_all(SIGKILL);
console_loglevel = 8;
.enable_mask = SYSRQ_ENABLE_SIGNAL,
};
-static void sysrq_handle_unrt(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
+static void sysrq_handle_unrt(int key, struct tty_struct *tty)
{
normalize_rt_tasks();
}
/* May be assigned at init time by SMP VOYAGER */
NULL, /* v */
NULL, /* w */
- NULL, /* x */
+ &sysrq_showstate_blocked_op, /* x */
NULL, /* y */
NULL /* z */
};
* This is the non-locking version of handle_sysrq. It must/can only be called
* by sysrq key handlers, as they are inside of the lock
*/
-void __handle_sysrq(int key, struct pt_regs *pt_regs, struct tty_struct *tty,
- int check_mask)
+void __handle_sysrq(int key, struct tty_struct *tty, int check_mask)
{
struct sysrq_key_op *op_p;
int orig_log_level;
(sysrq_enabled & op_p->enable_mask)) {
printk("%s\n", op_p->action_msg);
console_loglevel = orig_log_level;
- op_p->handler(key, pt_regs, tty);
+ op_p->handler(key, tty);
} else {
printk("This sysrq operation is disabled.\n");
}
* This function is called by the keyboard handler when SysRq is pressed
* and any other keycode arrives.
*/
-void handle_sysrq(int key, struct pt_regs *pt_regs, struct tty_struct *tty)
+void handle_sysrq(int key, struct tty_struct *tty)
{
if (!sysrq_enabled)
return;
- __handle_sysrq(key, pt_regs, tty, 1);
+ __handle_sysrq(key, tty, 1);
}
EXPORT_SYMBOL(handle_sysrq);