124 lines
4.7 KiB
Plaintext
124 lines
4.7 KiB
Plaintext
# Copyright (C) 2017 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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service traced /system/bin/traced
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class late_start
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disabled
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socket traced_consumer stream 0666 root root
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socket traced_producer stream 0666 root root
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user nobody
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group nobody
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task_profiles ServiceCapacityLow
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service traced_probes /system/bin/traced_probes
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class late_start
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disabled
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user nobody
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# Despite the "log" group below, traced_probes is allowed to read log
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# only on userdebug/eng via selinux (see traced_probes.te).
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group nobody readproc log readtracefs
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task_profiles ServiceCapacityLow
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# Clean up procfs configuration even if traced_probes crashes
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# unexpectedly.
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onrestart exec_background - nobody shell -- /system/bin/traced_probes --cleanup-after-crash
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file /dev/kmsg w
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capabilities DAC_READ_SEARCH
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on property:persist.device_config.global_settings.sys_traced=1
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setprop persist.traced.enable 1
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on property:persist.device_config.global_settings.sys_traced=0
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setprop persist.traced.enable 0
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on property:debug.atrace.user_initiated=1
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stop traced_probes
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on property:persist.traced.enable=1 && property:debug.atrace.user_initiated=""
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start traced_probes
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on property:persist.traced.enable=1
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# Trace files need to be:
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# - Written by either uid:shell or uid:statsd.
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# - Read by shell and incidentd.
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mkdir /data/misc/perfetto-traces 0773 root shell
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# Traces in this directory are only accessed by dumpstate (read+unlink) and
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# by the bug reporting UI (ls+getattr).
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mkdir /data/misc/perfetto-traces/bugreport 0773 root shell
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# This directory allows shell to save configs file in a place where the
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# perfetto cmdline client can read then. /data/local/tmp/ isn't safe because
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# too many other domains can write into that. See b/170404111.
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mkdir /data/misc/perfetto-configs 0775 root shell
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start traced
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start traced_probes
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on property:persist.traced.enable=0
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stop traced
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stop traced_probes
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# Reset the Perfetto guard rail state on boot:
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on post-fs-data
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rm /data/misc/perfetto-traces/.guardraildata
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#############################################################################
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# mm_events - Arms a perfetto trace config that is triggered
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# on memory pressure (kmem_activity trigger)
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#############################################################################
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service mm_events /system/bin/mm_events
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class late_start
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disabled
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oneshot
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user nobody
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group nobody
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on property:persist.mm_events.enabled=true && property:persist.traced.enable=1
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restart mm_events # Restart to reset backoff interval
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on property:persist.mm_events.enabled=false
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stop mm_events
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#############################################################################
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# perfetto_trace_on_boot - Starts a perfetto trace on boot
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#############################################################################
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#
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# There are two separate actions (a trigger action and a start action) to make
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# sure that perfetto_trace_on_boot is started only once on boot (otherwise,
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# whenever persist.debug.perfetto.boottrace=1 is set, perfetto_trace_on_boot
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# would start immediately).
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#
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# persist.debug.perfetto.boottrace=1 can be manually set after boot (to record
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# a trace on the next reboot) and we don't want to immediately start a trace
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# when setting the debug property. So we turn "ro.persistent_properties.ready"
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# into a trigger, and then check whether we should start tracing when the
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# trigger fires.
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on perfetto_maybe_trace_on_boot && property:persist.debug.perfetto.boottrace=1 && property:persist.traced.enable=1
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setprop persist.debug.perfetto.boottrace ""
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rm /data/misc/perfetto-traces/boottrace.perfetto-trace
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# Set by traced after listen()ing on the consumer socket. Without this,
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# perfetto could try to connect to traced before traced is ready to listen.
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wait_for_prop sys.trace.traced_started 1
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start perfetto_trace_on_boot
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on property:ro.persistent_properties.ready=true
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trigger perfetto_maybe_trace_on_boot
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service perfetto_trace_on_boot /system/bin/perfetto -c /data/misc/perfetto-configs/boottrace.pbtxt --txt -o /data/misc/perfetto-traces/boottrace.perfetto-trace
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disabled
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oneshot
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user shell
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group nobody
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