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CN_SZTL
2020-12-19 18:06:17 +08:00
parent d17959e3a8 3ab695368a
commit 2fb6ef3dd2
122 changed files with 359 additions and 3750 deletions
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34
config/Config-kernel.in
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@@ -266,6 +266,40 @@ config KERNEL_FUNCTION_PROFILER
depends on KERNEL_FUNCTION_TRACER
default n
config KERNEL_IRQSOFF_TRACER
bool "Interrupts-off Latency Tracer"
depends on KERNEL_FTRACE
help
This option measures the time spent in irqs-off critical
sections, with microsecond accuracy.
The default measurement method is a maximum search, which is
disabled by default and can be runtime (re-)started
via:
echo 0 > /sys/kernel/debug/tracing/tracing_max_latency
(Note that kernel size and overhead increase with this option
enabled. This option and the preempt-off timing option can be
used together or separately.)
config KERNEL_PREEMPT_TRACER
bool "Preemption-off Latency Tracer"
depends on KERNEL_FTRACE
help
This option measures the time spent in preemption-off critical
sections, with microsecond accuracy.
The default measurement method is a maximum search, which is
disabled by default and can be runtime (re-)started
via:
echo 0 > /sys/kernel/debug/tracing/tracing_max_latency
(Note that kernel size and overhead increase with this option
enabled. This option and the irqs-off timing option can be
used together or separately.)
config KERNEL_DEBUG_KERNEL
bool
default n