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Diffstat (limited to 'drivers/char/sysrq.c')
-rw-r--r--drivers/char/sysrq.c66
1 files changed, 27 insertions, 39 deletions
diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index ee3ca8f1768..5f49280779f 100644
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -35,14 +35,15 @@
#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';
@@ -58,8 +59,7 @@ static struct sysrq_key_op sysrq_loglevel_op = {
};
#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);
@@ -76,8 +76,7 @@ static struct sysrq_key_op sysrq_SAK_op = {
#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];
@@ -95,10 +94,9 @@ static struct sysrq_key_op sysrq_unraw_op = {
#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,
@@ -110,9 +108,9 @@ static struct sysrq_key_op sysrq_crashdump_op = {
#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();
}
@@ -123,8 +121,7 @@ static struct sysrq_key_op sysrq_reboot_op = {
.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();
}
@@ -135,8 +132,7 @@ static struct sysrq_key_op sysrq_sync_op = {
.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();
}
@@ -148,8 +144,7 @@ static struct sysrq_key_op sysrq_mountro_op = {
};
#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();
}
@@ -163,11 +158,11 @@ static struct sysrq_key_op sysrq_showlocks_op = {
#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,
@@ -176,8 +171,7 @@ static struct sysrq_key_op sysrq_showregs_op = {
.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();
}
@@ -188,8 +182,7 @@ static struct sysrq_key_op sysrq_showstate_op = {
.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_showmem(int key, struct tty_struct *tty)
{
show_mem();
}
@@ -208,14 +201,13 @@ static void send_sig_all(int sig)
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;
@@ -235,8 +227,7 @@ static void moom_callback(void *ignored)
static DECLARE_WORK(moom_work, moom_callback, NULL);
-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);
}
@@ -246,8 +237,7 @@ static struct sysrq_key_op sysrq_moom_op = {
.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;
@@ -259,8 +249,7 @@ static struct sysrq_key_op sysrq_kill_op = {
.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();
}
@@ -360,8 +349,7 @@ static void __sysrq_put_key_op(int key, struct sysrq_key_op *op_p)
* 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;
@@ -383,7 +371,7 @@ void __handle_sysrq(int key, struct pt_regs *pt_regs, struct tty_struct *tty,
(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");
}
@@ -412,11 +400,11 @@ void __handle_sysrq(int key, struct pt_regs *pt_regs, struct tty_struct *tty,
* 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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-03-04 06:14:15 +0000