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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>
38 lines
1.6 KiB
Text
38 lines
1.6 KiB
Text
digraph state_automaton {
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center = true;
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size = "7,11";
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{node [shape = plaintext, style=invis, label=""] "__init_can_sched"};
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{node [shape = doublecircle] "can_sched"};
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{node [shape = circle] "can_sched"};
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{node [shape = circle] "cant_sched"};
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{node [shape = circle] "disable_to_switch"};
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{node [shape = circle] "enable_to_exit"};
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{node [shape = circle] "in_irq"};
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{node [shape = circle] "scheduling"};
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{node [shape = circle] "switching"};
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"__init_can_sched" -> "can_sched";
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"can_sched" [label = "can_sched", color = green3];
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"can_sched" -> "cant_sched" [ label = "irq_disable" ];
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"can_sched" -> "scheduling" [ label = "schedule_entry" ];
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"cant_sched" [label = "cant_sched"];
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"cant_sched" -> "can_sched" [ label = "irq_enable" ];
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"cant_sched" -> "cant_sched" [ label = "irq_entry" ];
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"disable_to_switch" [label = "disable_to_switch"];
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"disable_to_switch" -> "enable_to_exit" [ label = "irq_enable" ];
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"disable_to_switch" -> "in_irq" [ label = "irq_entry" ];
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"disable_to_switch" -> "switching" [ label = "sched_switch" ];
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"enable_to_exit" [label = "enable_to_exit"];
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"enable_to_exit" -> "can_sched" [ label = "schedule_exit" ];
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"enable_to_exit" -> "enable_to_exit" [ label = "irq_disable\nirq_entry\nirq_enable" ];
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"in_irq" [label = "in_irq"];
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"in_irq" -> "in_irq" [ label = "irq_entry" ];
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"in_irq" -> "scheduling" [ label = "irq_enable" ];
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"scheduling" [label = "scheduling"];
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"scheduling" -> "disable_to_switch" [ label = "irq_disable" ];
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"switching" [label = "switching"];
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"switching" -> "enable_to_exit" [ label = "irq_enable" ];
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{ rank = min ;
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"__init_can_sched";
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"can_sched";
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}
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}
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