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Gabriele Monaco
13578a0871
Add a sample monitor to showcase hybrid/timed automata. The stall monitor identifies tasks stalled for longer than a threshold and reacts when that happens. Reviewed-by: Nam Cao <namcao@linutronix.de> Link: https://lore.kernel.org/r/20260330111010.153663-7-gmonaco@redhat.com Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
82 lines
1.5 KiB
C
82 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Automatically generated C representation of stall automaton
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* For further information about this format, see kernel documentation:
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* Documentation/trace/rv/deterministic_automata.rst
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*/
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#define MONITOR_NAME stall
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enum states_stall {
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dequeued_stall,
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enqueued_stall,
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running_stall,
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state_max_stall,
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};
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#define INVALID_STATE state_max_stall
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enum events_stall {
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sched_switch_in_stall,
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sched_switch_preempt_stall,
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sched_switch_wait_stall,
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sched_wakeup_stall,
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event_max_stall,
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};
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enum envs_stall {
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clk_stall,
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env_max_stall,
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env_max_stored_stall = env_max_stall,
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};
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_Static_assert(env_max_stored_stall <= MAX_HA_ENV_LEN, "Not enough slots");
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struct automaton_stall {
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char *state_names[state_max_stall];
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char *event_names[event_max_stall];
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char *env_names[env_max_stall];
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unsigned char function[state_max_stall][event_max_stall];
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unsigned char initial_state;
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bool final_states[state_max_stall];
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};
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static const struct automaton_stall automaton_stall = {
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.state_names = {
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"dequeued",
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"enqueued",
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"running",
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},
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.event_names = {
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"sched_switch_in",
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"sched_switch_preempt",
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"sched_switch_wait",
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"sched_wakeup",
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},
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.env_names = {
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"clk",
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},
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.function = {
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{
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INVALID_STATE,
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INVALID_STATE,
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INVALID_STATE,
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enqueued_stall,
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},
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{
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running_stall,
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INVALID_STATE,
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INVALID_STATE,
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enqueued_stall,
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},
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{
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running_stall,
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enqueued_stall,
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dequeued_stall,
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running_stall,
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},
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},
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.initial_state = dequeued_stall,
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.final_states = { 1, 0, 0 },
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};
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