2d6b42c487
These events are already enabled from kernel. Bug: 378928822 Test: Verified that trace functionality works as expected. Flag: EXEMPT, just a clean up in init rc Change-Id: I9e50e3d86e914b0db8633a1ae7287875b4df9838 Signed-off-by: Chintan Pandya <chintanpandya@google.com>
16 lines
1,012 B
Text
16 lines
1,012 B
Text
on init
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# Create the directory for the trace instance during early init
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chmod 666 /sys/kernel/tracing/instances/irq_gia_google
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chmod 666 /sys/kernel/tracing/instances/irq_gia_google/trace
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chown system system /sys/kernel/tracing/instances/irq_gia_google
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chown system system /sys/kernel/tracing/instances/irq_gia_google/trace
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# There are some very high frequency IRQ events happening all the time. Tracing
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# them is not absolute necessity, but a flood of them is noise for more interesting
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# events that we want to capture. All these high frequency IRQs have virq < 11.
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write /sys/kernel/tracing/instances/irq_gia_google/events/irq/filter "irq > 11"
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# Keep the buffer size small. This size is practically enough for debug purpose.
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# Having low size helps because this entire buffer gets dumped in bugreport.
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# Having a large size can impact bugreport size and time it takes to pack/unpack.
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write /sys/kernel/tracing/instances/irq_gia_google/buffer_size_kb 512
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