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d0096c2f9c
The tss monitor currently guarantees task switches can happen only while scheduling, whereas the sncid monitor enforces scheduling occurs with interrupt disabled. Replace the monitors with a more comprehensive specification which implies both but also ensures that: * each scheduler call disable interrupts to switch * each task switch happens with interrupts disabled Cc: Ingo Molnar <mingo@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Nam Cao <namcao@linutronix.de> Cc: Tomas Glozar <tglozar@redhat.com> Cc: Juri Lelli <jlelli@redhat.com> Cc: Clark Williams <williams@redhat.com> Cc: John Kacur <jkacur@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/20250728135022.255578-8-gmonaco@redhat.com Signed-off-by: Gabriele Monaco <gmonaco@redhat.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
118 lines
2.0 KiB
C
118 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Automatically generated C representation of sts 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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enum states_sts {
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can_sched_sts = 0,
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cant_sched_sts,
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disable_to_switch_sts,
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enable_to_exit_sts,
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in_irq_sts,
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scheduling_sts,
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switching_sts,
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state_max_sts
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};
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#define INVALID_STATE state_max_sts
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enum events_sts {
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irq_disable_sts = 0,
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irq_enable_sts,
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irq_entry_sts,
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sched_switch_sts,
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schedule_entry_sts,
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schedule_exit_sts,
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event_max_sts
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};
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struct automaton_sts {
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char *state_names[state_max_sts];
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char *event_names[event_max_sts];
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unsigned char function[state_max_sts][event_max_sts];
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unsigned char initial_state;
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bool final_states[state_max_sts];
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};
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static const struct automaton_sts automaton_sts = {
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.state_names = {
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"can_sched",
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"cant_sched",
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"disable_to_switch",
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"enable_to_exit",
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"in_irq",
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"scheduling",
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"switching"
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},
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.event_names = {
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"irq_disable",
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"irq_enable",
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"irq_entry",
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"sched_switch",
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"schedule_entry",
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"schedule_exit"
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},
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.function = {
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{
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cant_sched_sts,
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INVALID_STATE,
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INVALID_STATE,
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INVALID_STATE,
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scheduling_sts,
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INVALID_STATE
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},
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{
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INVALID_STATE,
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can_sched_sts,
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cant_sched_sts,
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INVALID_STATE,
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INVALID_STATE,
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INVALID_STATE
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},
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{
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INVALID_STATE,
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enable_to_exit_sts,
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in_irq_sts,
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switching_sts,
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INVALID_STATE,
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INVALID_STATE
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},
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{
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enable_to_exit_sts,
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enable_to_exit_sts,
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enable_to_exit_sts,
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INVALID_STATE,
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INVALID_STATE,
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can_sched_sts
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},
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{
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INVALID_STATE,
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scheduling_sts,
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in_irq_sts,
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INVALID_STATE,
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INVALID_STATE,
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INVALID_STATE
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},
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{
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disable_to_switch_sts,
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INVALID_STATE,
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INVALID_STATE,
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INVALID_STATE,
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INVALID_STATE,
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INVALID_STATE
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},
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{
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INVALID_STATE,
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enable_to_exit_sts,
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INVALID_STATE,
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INVALID_STATE,
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INVALID_STATE,
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INVALID_STATE
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},
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},
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.initial_state = can_sched_sts,
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.final_states = { 1, 0, 0, 0, 0, 0, 0 },
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};
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