diff options
| -rw-r--r-- | cmds/atrace/atrace.rc | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/cmds/atrace/atrace.rc b/cmds/atrace/atrace.rc index 37fc9a9356..e3c4edebbd 100644 --- a/cmds/atrace/atrace.rc +++ b/cmds/atrace/atrace.rc @@ -266,7 +266,10 @@ on late-init chmod 0666 /sys/kernel/debug/tracing/per_cpu/cpu15/trace chmod 0666 /sys/kernel/tracing/per_cpu/cpu15/trace -on post-fs-data +# Only create the tracing instance if persist.mm_events.enabled +# Attempting to remove the tracing instance after it has been created +# will likely fail with EBUSY as it would be in use by traced_probes. +on post-fs-data && property:persist.mm_events.enabled=true # Create MM Events Tracing Instance for Kmem Activity Trigger mkdir /sys/kernel/debug/tracing/instances/mm_events 0755 system system mkdir /sys/kernel/tracing/instances/mm_events 0755 system system @@ -275,10 +278,18 @@ on post-fs-data chmod 0666 /sys/kernel/debug/tracing/instances/mm_events/buffer_size_kb chmod 0666 /sys/kernel/tracing/instances/mm_events/buffer_size_kb +# Set the default buffer size to the minimum + write /sys/kernel/debug/tracing/instances/mm_events/buffer_size_kb 1 + write /sys/kernel/tracing/instances/mm_events/buffer_size_kb 1 + # Read and enable tracing chmod 0666 /sys/kernel/debug/tracing/instances/mm_events/tracing_on chmod 0666 /sys/kernel/tracing/instances/mm_events/tracing_on +# Tracing disabled by default + write /sys/kernel/debug/tracing/instances/mm_events/tracing_on 0 + write /sys/kernel/tracing/instances/mm_events/tracing_on 0 + # Read and truncate kernel trace chmod 0666 /sys/kernel/debug/tracing/instances/mm_events/trace chmod 0666 /sys/kernel/tracing/instances/mm_events/trace |