1279013dee
This change adds init.rc steps to: * allow kernel tracing to be enabled via adb * allow a limited set of kernel trace events to be enabled via adb * allow the kernel trace to be read via adb * allow all users to write to the kernel trace from userland Bug: 6513400 Change-Id: Ic3c189b5697aa5edf88d2f507c932971bed6caff
31 lines
1.6 KiB
Text
31 lines
1.6 KiB
Text
## Permissions to allow system-wide tracing to the kernel trace buffer.
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##
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on boot
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# Allow writing to the kernel trace log.
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chmod 0222 /sys/kernel/debug/tracing/trace_marker
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# Allow the shell group to enable (some) kernel tracing.
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chown root shell /sys/kernel/debug/tracing/trace_clock
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chown root shell /sys/kernel/debug/tracing/buffer_size_kb
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chown root shell /sys/kernel/debug/tracing/options/overwrite
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chown root shell /sys/kernel/debug/tracing/events/sched/sched_switch/enable
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chown root shell /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable
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chown root shell /sys/kernel/debug/tracing/events/power/cpu_frequency/enable
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chown root shell /sys/kernel/debug/tracing/events/power/cpu_idle/enable
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chown root shell /sys/kernel/debug/tracing/events/cpufreq_interactive/enable
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chown root shell /sys/kernel/debug/tracing/tracing_on
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chmod 0664 /sys/kernel/debug/tracing/trace_clock
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chmod 0664 /sys/kernel/debug/tracing/buffer_size_kb
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chmod 0664 /sys/kernel/debug/tracing/options/overwrite
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chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_switch/enable
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chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable
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chmod 0664 /sys/kernel/debug/tracing/events/power/cpu_frequency/enable
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chmod 0664 /sys/kernel/debug/tracing/events/power/cpu_idle/enable
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chmod 0664 /sys/kernel/debug/tracing/events/cpufreq_interactive/enable
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chmod 0664 /sys/kernel/debug/tracing/tracing_on
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# Allow only the shell group to read and truncate the kernel trace.
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chown root shell /sys/kernel/debug/tracing/trace
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chmod 0660 /sys/kernel/debug/tracing/trace
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