tequilaOS/platform_system_core
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Make bpf_attach_tracepoint() available as soon as possible

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The "sys.init.perf_lsm_hooks" is set on TestPerEventSelinux and it
is before early-init, but it need trigger by queue_property_triggers
and it is after late-init (zygote start on late-init).
The property is ready on load_bpf_programs, make sure
bpf_attach_tracepoint() is available on zygote start.

Bug: 257102190
Test: cat /sys/fs/bpf/map_time_in_state_uid_time_in_state_map
Change-Id: I5aa102df54b82e1584882800e93efd06ccf61c16
This commit is contained in:
chenyc5 2022-11-03 09:57:47 +08:00
parent 3b88013a8c
commit 7e357eb731
1 changed files with 1 additions and 1 deletions
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2
rootdir/init.rc
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@ -1223,7 +1223,7 @@ on property:net.tcp_def_init_rwnd=*
# controlling access. On older kernels, the paranoid value is the only means of
# controlling access. It is normally 3 (allow only root), but the shell user
# can lower it to 1 (allowing thread-scoped pofiling) via security.perf_harden.
on property:sys.init.perf_lsm_hooks=1
on load_bpf_programs && property:sys.init.perf_lsm_hooks=1
write /proc/sys/kernel/perf_event_paranoid -1
on property:security.perf_harden=0 && property:sys.init.perf_lsm_hooks=""
write /proc/sys/kernel/perf_event_paranoid 1