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Add a wakeup monitor to detect a lower-priority task waking up a higher-priority task. The rtapp/sleep monitor already detects this. However, that monitor triggers an error in the context of the wakee task and user only gets the stacktrace of that task. It is also extremely useful to get the stacktrace of the waker task, which this monitor offers. In other words, this monitor complements the rtapp/sleep monitor. Signed-off-by: Nam Cao <namcao@linutronix.de> Reviewed-by: Gabriele Monaco <gmonaco@redhat.com> Link: https://lore.kernel.org/r/ba5658fa13e49ada466b84a2c211f233037180b5.1781852967.git.namcao@linutronix.de Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
17 lines
531 B
Plaintext
17 lines
531 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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config RV_MON_WAKEUP
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depends on RV
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depends on RV_MON_RTAPP
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depends on HAVE_SYSCALL_TRACEPOINTS
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default y
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select LTL_MON_EVENTS_ID
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bool "wakeup monitor"
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help
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This monitor detects a lower-priority task waking up a
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higher-priority task. The RV_MON_SLEEP monitor already
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detects this case, but this monitor detects in the context
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of the waker task instead. This and RV_MON_SLEEP can be
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enabled together to get the stacktrace of both the waker
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task and the wakee task.
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