Lines Matching +full:timeout +full:- +full:press +full:- +full:ms
1 // SPDX-License-Identifier: GPL-2.0
68 * sysrq_mask - Getter for sysrq_enabled mask.
103 u8 loglevel = key - '0'; in sysrq_handle_loglevel()
111 .help_msg = "loglevel(0-9)",
196 .help_msg = "show-all-timers(q)",
219 .help_msg = "show-all-locks(d)",
278 .help_msg = "show-backtrace-all-active-cpus(l)",
298 .help_msg = "show-registers(p)",
310 .help_msg = "show-task-states(t)",
321 .help_msg = "show-blocked-tasks(w)",
335 .help_msg = "dump-ftrace-buffer(z)",
349 .help_msg = "show-memory-usage(m)",
363 if (p->flags & PF_KTHREAD) in send_sig_all()
380 .help_msg = "terminate-all-tasks(e)",
393 .order = -1, in moom_callback()
410 .help_msg = "memory-full-oom-kill(f)",
422 .help_msg = "thaw-filesystems(j)",
437 .help_msg = "kill-all-tasks(i)",
448 .help_msg = "nice-all-RT-tasks(n)",
480 NULL, /* h - reserved for help */
533 /* key2index calculation, -1 on invalid index */
538 return key - '0'; in sysrq_key_table_key2index()
540 return key - 'a' + 10; in sysrq_key_table_key2index()
542 return key - 'A' + 10 + 26; in sysrq_key_table_key2index()
544 return -1; in sysrq_key_table_key2index()
557 if (i != -1) in __sysrq_get_key_op()
567 if (i != -1) in __sysrq_put_key_op()
595 * Should we check for enabled operations (/proc/sysrq-trigger in __handle_sysrq()
598 if (!check_mask || sysrq_on_mask(op_p->enable_mask)) { in __handle_sysrq()
599 pr_info("%s\n", op_p->action_msg); in __handle_sysrq()
601 op_p->handler(key); in __handle_sysrq()
618 pr_cont("%s ", sysrq_key_table[i]->help_msg); in __handle_sysrq()
642 "\000\0331234567890-=\177\t" /* 0x00 - 0x0f */
643 "qwertyuiop[]\r\000as" /* 0x10 - 0x1f */
644 "dfghjkl;'`\000\\zxcv" /* 0x20 - 0x2f */
645 "bnm,./\000*\000 \000\201\202\203\204\205" /* 0x30 - 0x3f */
646 "\206\207\210\211\212\000\000789-456+1" /* 0x40 - 0x4f */
647 "230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000" /* 0x50 - 0x5f */
648 "\r\000/"; /* 0x60 - 0x6f */
682 state->reset_seq_cnt = 0; in sysrq_parse_reset_sequence()
690 __set_bit(key, state->reset_keybit); in sysrq_parse_reset_sequence()
691 state->reset_seq_len++; in sysrq_parse_reset_sequence()
693 if (test_bit(key, state->key_down)) in sysrq_parse_reset_sequence()
694 state->reset_seq_cnt++; in sysrq_parse_reset_sequence()
698 state->reset_canceled = state->reset_seq_cnt != 0; in sysrq_parse_reset_sequence()
700 state->reset_seq_version = sysrq_reset_seq_version; in sysrq_parse_reset_sequence()
707 state->reset_requested = true; in sysrq_do_reset()
714 if (state->reset_requested) in sysrq_handle_reset_request()
718 mod_timer(&state->keyreset_timer, in sysrq_handle_reset_request()
721 sysrq_do_reset(&state->keyreset_timer); in sysrq_handle_reset_request()
727 if (!test_bit(code, state->reset_keybit)) { in sysrq_detect_reset_sequence()
734 if (value && state->reset_seq_cnt) { in sysrq_detect_reset_sequence()
735 state->reset_canceled = true; in sysrq_detect_reset_sequence()
736 del_timer(&state->keyreset_timer); in sysrq_detect_reset_sequence()
740 * Key release - all keys in the reset sequence need in sysrq_detect_reset_sequence()
741 * to be pressed and held for the reset timeout in sysrq_detect_reset_sequence()
744 del_timer(&state->keyreset_timer); in sysrq_detect_reset_sequence()
746 if (--state->reset_seq_cnt == 0) in sysrq_detect_reset_sequence()
747 state->reset_canceled = false; in sysrq_detect_reset_sequence()
749 /* key press, not autorepeat */ in sysrq_detect_reset_sequence()
750 if (++state->reset_seq_cnt == state->reset_seq_len && in sysrq_detect_reset_sequence()
751 !state->reset_canceled) { in sysrq_detect_reset_sequence()
765 np = of_find_node_by_path("/chosen/linux,sysrq-reset-seq"); in sysrq_of_get_keyreset_config()
782 /* Get reset timeout if any. */ in sysrq_of_get_keyreset_config()
783 of_property_read_u32(np, "timeout-ms", &sysrq_reset_downtime_ms); in sysrq_of_get_keyreset_config()
797 struct input_handle *handle = &sysrq->handle; in sysrq_reinject_alt_sysrq()
798 unsigned int alt_code = sysrq->alt_use; in sysrq_reinject_alt_sysrq()
800 if (sysrq->need_reinject) { in sysrq_reinject_alt_sysrq()
802 sysrq->reinjecting = true; in sysrq_reinject_alt_sysrq()
805 /* Simulate press and release of Alt + SysRq */ in sysrq_reinject_alt_sysrq()
815 sysrq->reinjecting = false; in sysrq_reinject_alt_sysrq()
822 bool was_active = sysrq->active; in sysrq_handle_keypress()
831 if (sysrq->active && code == sysrq->alt_use) in sysrq_handle_keypress()
832 sysrq->active = false; in sysrq_handle_keypress()
834 sysrq->alt = KEY_RESERVED; in sysrq_handle_keypress()
837 sysrq->alt = code; in sysrq_handle_keypress()
838 sysrq->need_reinject = false; in sysrq_handle_keypress()
845 sysrq->shift = KEY_RESERVED; in sysrq_handle_keypress()
847 sysrq->shift = code; in sysrq_handle_keypress()
848 if (sysrq->active) in sysrq_handle_keypress()
849 sysrq->shift_use = sysrq->shift; in sysrq_handle_keypress()
853 if (value == 1 && sysrq->alt != KEY_RESERVED) { in sysrq_handle_keypress()
854 sysrq->active = true; in sysrq_handle_keypress()
855 sysrq->alt_use = sysrq->alt; in sysrq_handle_keypress()
857 sysrq->shift_use = sysrq->shift; in sysrq_handle_keypress()
860 * to re-inject Alt-SysRq keysroke. in sysrq_handle_keypress()
862 sysrq->need_reinject = true; in sysrq_handle_keypress()
873 if (sysrq->active) in sysrq_handle_keypress()
874 clear_bit(KEY_SYSRQ, sysrq->handle.dev->key); in sysrq_handle_keypress()
879 if (sysrq->active && value && value != 2) { in sysrq_handle_keypress()
882 sysrq->need_reinject = false; in sysrq_handle_keypress()
883 if (sysrq->shift_use != KEY_RESERVED) in sysrq_handle_keypress()
890 suppress = sysrq->active; in sysrq_handle_keypress()
892 if (!sysrq->active) { in sysrq_handle_keypress()
897 if (sysrq->reset_seq_version != sysrq_reset_seq_version) in sysrq_handle_keypress()
906 set_bit(code, sysrq->key_down); in sysrq_handle_keypress()
908 clear_bit(code, sysrq->key_down); in sysrq_handle_keypress()
911 schedule_work(&sysrq->reinject_work); in sysrq_handle_keypress()
916 } else if (value == 0 && test_and_clear_bit(code, sysrq->key_down)) { in sysrq_handle_keypress()
930 struct sysrq_state *sysrq = handle->private; in sysrq_filter()
934 * Do not filter anything if we are in the process of re-injecting in sysrq_filter()
937 if (sysrq->reinjecting) in sysrq_filter()
951 suppress = sysrq->active; in sysrq_filter()
967 return -ENOMEM; in sysrq_connect()
969 INIT_WORK(&sysrq->reinject_work, sysrq_reinject_alt_sysrq); in sysrq_connect()
971 sysrq->handle.dev = dev; in sysrq_connect()
972 sysrq->handle.handler = handler; in sysrq_connect()
973 sysrq->handle.name = "sysrq"; in sysrq_connect()
974 sysrq->handle.private = sysrq; in sysrq_connect()
975 timer_setup(&sysrq->keyreset_timer, sysrq_do_reset, 0); in sysrq_connect()
977 error = input_register_handle(&sysrq->handle); in sysrq_connect()
984 error = input_open_device(&sysrq->handle); in sysrq_connect()
993 input_unregister_handle(&sysrq->handle); in sysrq_connect()
1001 struct sysrq_state *sysrq = handle->private; in sysrq_disconnect()
1004 cancel_work_sync(&sysrq->reinject_work); in sysrq_disconnect()
1005 timer_shutdown_sync(&sysrq->keyreset_timer); in sysrq_disconnect()
1060 return -EINVAL; in sysrq_reset_seq_param_set()
1062 *((unsigned short *)kp->arg) = val; in sysrq_reset_seq_param_set()
1124 retval = -1; in __sysrq_swap_key_ops()
1152 * writing 'C' to /proc/sysrq-trigger is like sysrq-C
1161 return -EFAULT; in write_sysrq_trigger()
1175 if (!proc_create("sysrq-trigger", S_IWUSR, NULL, in sysrq_init_procfs()