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Nam Cao
f74f8bb246
Add a monitor for checking that real-time tasks do not go to sleep in a manner that may cause undesirable latency. Also change RV depends on TRACING to RV select TRACING to avoid the following recursive dependency: error: recursive dependency detected! symbol TRACING is selected by PREEMPTIRQ_TRACEPOINTS symbol PREEMPTIRQ_TRACEPOINTS depends on TRACE_IRQFLAGS symbol TRACE_IRQFLAGS is selected by RV_MON_SLEEP symbol RV_MON_SLEEP depends on RV symbol RV depends on TRACING Cc: John Ogness <john.ogness@linutronix.de> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Link: https://lore.kernel.org/75bc5bcc741d153aa279c95faf778dff35c5c8ad.1752088709.git.namcao@linutronix.de Reviewed-by: Gabriele Monaco <gmonaco@redhat.com> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
23 lines
658 B
Plaintext
23 lines
658 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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config RV_MON_SLEEP
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depends on RV
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select RV_LTL_MONITOR
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depends on HAVE_SYSCALL_TRACEPOINTS
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depends on RV_MON_RTAPP
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select TRACE_IRQFLAGS
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default y
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select LTL_MON_EVENTS_ID
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bool "sleep monitor"
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help
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Monitor that real-time tasks do not sleep in a manner that may
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cause undesirable latency.
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If you are developing a real-time system and not entirely sure whether
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the applications are designed correctly for real-time, you want to say
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Y here.
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Enabling this monitor may have performance impact (due to select
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TRACE_IRQFLAGS). Therefore, you probably should say N for
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production kernel.
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