diff options
Diffstat (limited to 'drivers/char/sysrq.c')
-rw-r--r-- | drivers/char/sysrq.c | 53 |
1 files changed, 26 insertions, 27 deletions
diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c index 878ac0c2cc6..ef31bb81e84 100644 --- a/drivers/char/sysrq.c +++ b/drivers/char/sysrq.c | |||
@@ -18,7 +18,6 @@ | |||
18 | #include <linux/interrupt.h> | 18 | #include <linux/interrupt.h> |
19 | #include <linux/mm.h> | 19 | #include <linux/mm.h> |
20 | #include <linux/fs.h> | 20 | #include <linux/fs.h> |
21 | #include <linux/tty.h> | ||
22 | #include <linux/mount.h> | 21 | #include <linux/mount.h> |
23 | #include <linux/kdev_t.h> | 22 | #include <linux/kdev_t.h> |
24 | #include <linux/major.h> | 23 | #include <linux/major.h> |
@@ -76,7 +75,7 @@ static int __init sysrq_always_enabled_setup(char *str) | |||
76 | __setup("sysrq_always_enabled", sysrq_always_enabled_setup); | 75 | __setup("sysrq_always_enabled", sysrq_always_enabled_setup); |
77 | 76 | ||
78 | 77 | ||
79 | static void sysrq_handle_loglevel(int key, struct tty_struct *tty) | 78 | static void sysrq_handle_loglevel(int key) |
80 | { | 79 | { |
81 | int i; | 80 | int i; |
82 | 81 | ||
@@ -93,7 +92,7 @@ static struct sysrq_key_op sysrq_loglevel_op = { | |||
93 | }; | 92 | }; |
94 | 93 | ||
95 | #ifdef CONFIG_VT | 94 | #ifdef CONFIG_VT |
96 | static void sysrq_handle_SAK(int key, struct tty_struct *tty) | 95 | static void sysrq_handle_SAK(int key) |
97 | { | 96 | { |
98 | struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work; | 97 | struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work; |
99 | schedule_work(SAK_work); | 98 | schedule_work(SAK_work); |
@@ -109,7 +108,7 @@ static struct sysrq_key_op sysrq_SAK_op = { | |||
109 | #endif | 108 | #endif |
110 | 109 | ||
111 | #ifdef CONFIG_VT | 110 | #ifdef CONFIG_VT |
112 | static void sysrq_handle_unraw(int key, struct tty_struct *tty) | 111 | static void sysrq_handle_unraw(int key) |
113 | { | 112 | { |
114 | struct kbd_struct *kbd = &kbd_table[fg_console]; | 113 | struct kbd_struct *kbd = &kbd_table[fg_console]; |
115 | 114 | ||
@@ -126,7 +125,7 @@ static struct sysrq_key_op sysrq_unraw_op = { | |||
126 | #define sysrq_unraw_op (*(struct sysrq_key_op *)NULL) | 125 | #define sysrq_unraw_op (*(struct sysrq_key_op *)NULL) |
127 | #endif /* CONFIG_VT */ | 126 | #endif /* CONFIG_VT */ |
128 | 127 | ||
129 | static void sysrq_handle_crash(int key, struct tty_struct *tty) | 128 | static void sysrq_handle_crash(int key) |
130 | { | 129 | { |
131 | char *killer = NULL; | 130 | char *killer = NULL; |
132 | 131 | ||
@@ -141,7 +140,7 @@ static struct sysrq_key_op sysrq_crash_op = { | |||
141 | .enable_mask = SYSRQ_ENABLE_DUMP, | 140 | .enable_mask = SYSRQ_ENABLE_DUMP, |
142 | }; | 141 | }; |
143 | 142 | ||
144 | static void sysrq_handle_reboot(int key, struct tty_struct *tty) | 143 | static void sysrq_handle_reboot(int key) |
145 | { | 144 | { |
146 | lockdep_off(); | 145 | lockdep_off(); |
147 | local_irq_enable(); | 146 | local_irq_enable(); |
@@ -154,7 +153,7 @@ static struct sysrq_key_op sysrq_reboot_op = { | |||
154 | .enable_mask = SYSRQ_ENABLE_BOOT, | 153 | .enable_mask = SYSRQ_ENABLE_BOOT, |
155 | }; | 154 | }; |
156 | 155 | ||
157 | static void sysrq_handle_sync(int key, struct tty_struct *tty) | 156 | static void sysrq_handle_sync(int key) |
158 | { | 157 | { |
159 | emergency_sync(); | 158 | emergency_sync(); |
160 | } | 159 | } |
@@ -165,7 +164,7 @@ static struct sysrq_key_op sysrq_sync_op = { | |||
165 | .enable_mask = SYSRQ_ENABLE_SYNC, | 164 | .enable_mask = SYSRQ_ENABLE_SYNC, |
166 | }; | 165 | }; |
167 | 166 | ||
168 | static void sysrq_handle_show_timers(int key, struct tty_struct *tty) | 167 | static void sysrq_handle_show_timers(int key) |
169 | { | 168 | { |
170 | sysrq_timer_list_show(); | 169 | sysrq_timer_list_show(); |
171 | } | 170 | } |
@@ -176,7 +175,7 @@ static struct sysrq_key_op sysrq_show_timers_op = { | |||
176 | .action_msg = "Show clockevent devices & pending hrtimers (no others)", | 175 | .action_msg = "Show clockevent devices & pending hrtimers (no others)", |
177 | }; | 176 | }; |
178 | 177 | ||
179 | static void sysrq_handle_mountro(int key, struct tty_struct *tty) | 178 | static void sysrq_handle_mountro(int key) |
180 | { | 179 | { |
181 | emergency_remount(); | 180 | emergency_remount(); |
182 | } | 181 | } |
@@ -188,7 +187,7 @@ static struct sysrq_key_op sysrq_mountro_op = { | |||
188 | }; | 187 | }; |
189 | 188 | ||
190 | #ifdef CONFIG_LOCKDEP | 189 | #ifdef CONFIG_LOCKDEP |
191 | static void sysrq_handle_showlocks(int key, struct tty_struct *tty) | 190 | static void sysrq_handle_showlocks(int key) |
192 | { | 191 | { |
193 | debug_show_all_locks(); | 192 | debug_show_all_locks(); |
194 | } | 193 | } |
@@ -226,7 +225,7 @@ static void sysrq_showregs_othercpus(struct work_struct *dummy) | |||
226 | 225 | ||
227 | static DECLARE_WORK(sysrq_showallcpus, sysrq_showregs_othercpus); | 226 | static DECLARE_WORK(sysrq_showallcpus, sysrq_showregs_othercpus); |
228 | 227 | ||
229 | static void sysrq_handle_showallcpus(int key, struct tty_struct *tty) | 228 | static void sysrq_handle_showallcpus(int key) |
230 | { | 229 | { |
231 | /* | 230 | /* |
232 | * Fall back to the workqueue based printing if the | 231 | * Fall back to the workqueue based printing if the |
@@ -252,7 +251,7 @@ static struct sysrq_key_op sysrq_showallcpus_op = { | |||
252 | }; | 251 | }; |
253 | #endif | 252 | #endif |
254 | 253 | ||
255 | static void sysrq_handle_showregs(int key, struct tty_struct *tty) | 254 | static void sysrq_handle_showregs(int key) |
256 | { | 255 | { |
257 | struct pt_regs *regs = get_irq_regs(); | 256 | struct pt_regs *regs = get_irq_regs(); |
258 | if (regs) | 257 | if (regs) |
@@ -266,7 +265,7 @@ static struct sysrq_key_op sysrq_showregs_op = { | |||
266 | .enable_mask = SYSRQ_ENABLE_DUMP, | 265 | .enable_mask = SYSRQ_ENABLE_DUMP, |
267 | }; | 266 | }; |
268 | 267 | ||
269 | static void sysrq_handle_showstate(int key, struct tty_struct *tty) | 268 | static void sysrq_handle_showstate(int key) |
270 | { | 269 | { |
271 | show_state(); | 270 | show_state(); |
272 | } | 271 | } |
@@ -277,7 +276,7 @@ static struct sysrq_key_op sysrq_showstate_op = { | |||
277 | .enable_mask = SYSRQ_ENABLE_DUMP, | 276 | .enable_mask = SYSRQ_ENABLE_DUMP, |
278 | }; | 277 | }; |
279 | 278 | ||
280 | static void sysrq_handle_showstate_blocked(int key, struct tty_struct *tty) | 279 | static void sysrq_handle_showstate_blocked(int key) |
281 | { | 280 | { |
282 | show_state_filter(TASK_UNINTERRUPTIBLE); | 281 | show_state_filter(TASK_UNINTERRUPTIBLE); |
283 | } | 282 | } |
@@ -291,7 +290,7 @@ static struct sysrq_key_op sysrq_showstate_blocked_op = { | |||
291 | #ifdef CONFIG_TRACING | 290 | #ifdef CONFIG_TRACING |
292 | #include <linux/ftrace.h> | 291 | #include <linux/ftrace.h> |
293 | 292 | ||
294 | static void sysrq_ftrace_dump(int key, struct tty_struct *tty) | 293 | static void sysrq_ftrace_dump(int key) |
295 | { | 294 | { |
296 | ftrace_dump(DUMP_ALL); | 295 | ftrace_dump(DUMP_ALL); |
297 | } | 296 | } |
@@ -305,7 +304,7 @@ static struct sysrq_key_op sysrq_ftrace_dump_op = { | |||
305 | #define sysrq_ftrace_dump_op (*(struct sysrq_key_op *)NULL) | 304 | #define sysrq_ftrace_dump_op (*(struct sysrq_key_op *)NULL) |
306 | #endif | 305 | #endif |
307 | 306 | ||
308 | static void sysrq_handle_showmem(int key, struct tty_struct *tty) | 307 | static void sysrq_handle_showmem(int key) |
309 | { | 308 | { |
310 | show_mem(); | 309 | show_mem(); |
311 | } | 310 | } |
@@ -330,7 +329,7 @@ static void send_sig_all(int sig) | |||
330 | } | 329 | } |
331 | } | 330 | } |
332 | 331 | ||
333 | static void sysrq_handle_term(int key, struct tty_struct *tty) | 332 | static void sysrq_handle_term(int key) |
334 | { | 333 | { |
335 | send_sig_all(SIGTERM); | 334 | send_sig_all(SIGTERM); |
336 | console_loglevel = 8; | 335 | console_loglevel = 8; |
@@ -349,7 +348,7 @@ static void moom_callback(struct work_struct *ignored) | |||
349 | 348 | ||
350 | static DECLARE_WORK(moom_work, moom_callback); | 349 | static DECLARE_WORK(moom_work, moom_callback); |
351 | 350 | ||
352 | static void sysrq_handle_moom(int key, struct tty_struct *tty) | 351 | static void sysrq_handle_moom(int key) |
353 | { | 352 | { |
354 | schedule_work(&moom_work); | 353 | schedule_work(&moom_work); |
355 | } | 354 | } |
@@ -361,7 +360,7 @@ static struct sysrq_key_op sysrq_moom_op = { | |||
361 | }; | 360 | }; |
362 | 361 | ||
363 | #ifdef CONFIG_BLOCK | 362 | #ifdef CONFIG_BLOCK |
364 | static void sysrq_handle_thaw(int key, struct tty_struct *tty) | 363 | static void sysrq_handle_thaw(int key) |
365 | { | 364 | { |
366 | emergency_thaw_all(); | 365 | emergency_thaw_all(); |
367 | } | 366 | } |
@@ -373,7 +372,7 @@ static struct sysrq_key_op sysrq_thaw_op = { | |||
373 | }; | 372 | }; |
374 | #endif | 373 | #endif |
375 | 374 | ||
376 | static void sysrq_handle_kill(int key, struct tty_struct *tty) | 375 | static void sysrq_handle_kill(int key) |
377 | { | 376 | { |
378 | send_sig_all(SIGKILL); | 377 | send_sig_all(SIGKILL); |
379 | console_loglevel = 8; | 378 | console_loglevel = 8; |
@@ -385,7 +384,7 @@ static struct sysrq_key_op sysrq_kill_op = { | |||
385 | .enable_mask = SYSRQ_ENABLE_SIGNAL, | 384 | .enable_mask = SYSRQ_ENABLE_SIGNAL, |
386 | }; | 385 | }; |
387 | 386 | ||
388 | static void sysrq_handle_unrt(int key, struct tty_struct *tty) | 387 | static void sysrq_handle_unrt(int key) |
389 | { | 388 | { |
390 | normalize_rt_tasks(); | 389 | normalize_rt_tasks(); |
391 | } | 390 | } |
@@ -493,7 +492,7 @@ static void __sysrq_put_key_op(int key, struct sysrq_key_op *op_p) | |||
493 | sysrq_key_table[i] = op_p; | 492 | sysrq_key_table[i] = op_p; |
494 | } | 493 | } |
495 | 494 | ||
496 | void __handle_sysrq(int key, struct tty_struct *tty, int check_mask) | 495 | void __handle_sysrq(int key, bool check_mask) |
497 | { | 496 | { |
498 | struct sysrq_key_op *op_p; | 497 | struct sysrq_key_op *op_p; |
499 | int orig_log_level; | 498 | int orig_log_level; |
@@ -520,7 +519,7 @@ void __handle_sysrq(int key, struct tty_struct *tty, int check_mask) | |||
520 | if (!check_mask || sysrq_on_mask(op_p->enable_mask)) { | 519 | if (!check_mask || sysrq_on_mask(op_p->enable_mask)) { |
521 | printk("%s\n", op_p->action_msg); | 520 | printk("%s\n", op_p->action_msg); |
522 | console_loglevel = orig_log_level; | 521 | console_loglevel = orig_log_level; |
523 | op_p->handler(key, tty); | 522 | op_p->handler(key); |
524 | } else { | 523 | } else { |
525 | printk("This sysrq operation is disabled.\n"); | 524 | printk("This sysrq operation is disabled.\n"); |
526 | } | 525 | } |
@@ -545,10 +544,10 @@ void __handle_sysrq(int key, struct tty_struct *tty, int check_mask) | |||
545 | spin_unlock_irqrestore(&sysrq_key_table_lock, flags); | 544 | spin_unlock_irqrestore(&sysrq_key_table_lock, flags); |
546 | } | 545 | } |
547 | 546 | ||
548 | void handle_sysrq(int key, struct tty_struct *tty) | 547 | void handle_sysrq(int key) |
549 | { | 548 | { |
550 | if (sysrq_on()) | 549 | if (sysrq_on()) |
551 | __handle_sysrq(key, tty, 1); | 550 | __handle_sysrq(key, true); |
552 | } | 551 | } |
553 | EXPORT_SYMBOL(handle_sysrq); | 552 | EXPORT_SYMBOL(handle_sysrq); |
554 | 553 | ||
@@ -597,7 +596,7 @@ static bool sysrq_filter(struct input_handle *handle, unsigned int type, | |||
597 | 596 | ||
598 | default: | 597 | default: |
599 | if (sysrq_down && value && value != 2) | 598 | if (sysrq_down && value && value != 2) |
600 | __handle_sysrq(sysrq_xlate[code], NULL, 1); | 599 | __handle_sysrq(sysrq_xlate[code], true); |
601 | break; | 600 | break; |
602 | } | 601 | } |
603 | 602 | ||
@@ -765,7 +764,7 @@ static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf, | |||
765 | 764 | ||
766 | if (get_user(c, buf)) | 765 | if (get_user(c, buf)) |
767 | return -EFAULT; | 766 | return -EFAULT; |
768 | __handle_sysrq(c, NULL, 0); | 767 | __handle_sysrq(c, false); |
769 | } | 768 | } |
770 | 769 | ||
771 | return count; | 770 | return count; |