diff options
| author | Minchan Kim <minchan@google.com> | 2022-11-07 10:43:09 -0800 |
|---|---|---|
| committer | Minchan Kim <minchan@google.com> | 2022-11-11 09:44:39 -0800 |
| commit | 786f5471e9f87bd9f67470b19654918e458ebb1e (patch) | |
| tree | 9bf51c6e7b21280bbc5424d789ba2503a93feacc | |
| parent | 64284745bb8d31195e1861ce0e1b18fba3603ed9 (diff) | |
MM: dump pixel trace at bugreport
Create pixel speicifc trace buffer and enable CMA trace events.
At bugreport, dumpstate will dump the trace buffer into
dumpstate_board.txt
binder:3947_2-3963 [003] .... 29.954681: cma_alloc_start: name=vframe count=16 align=4
binder:3947_2-3963 [003] .... 29.956230: cma_alloc_finish: name=vframe pfn=946080 page=000000003d6b380b count=16 align=4
binder:3947_2-3963 [003] .... 29.956235: cma_alloc_info: name=vframe pfn=0x946080 count=16 align=4 nr_migrated=16 nr_reclaimed=0 nr_mapped=16 err_iso=0 err_mig=0 err_test=0
binder:3947_2-3963 [003] .... 29.988325: cma_release: name=vframe pfn=946080 page=000000003d6b380b count=16
It's useful to investigate CMA allocation problems.
Test: "adb bugreport" includes the trace dump in dumpstate_board.txt
Bug: 238728493
Change-Id: I5eb2f79152d32ff7dbb4b9a7ea679facb186aa00
Signed-off-by: Minchan Kim <minchan@google.com>
| -rw-r--r-- | mm/pixel-mm-gki.rc | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/mm/pixel-mm-gki.rc b/mm/pixel-mm-gki.rc index fa2cd35..6119a72 100644 --- a/mm/pixel-mm-gki.rc +++ b/mm/pixel-mm-gki.rc @@ -32,3 +32,36 @@ on property:sys.boot_completed=1 on property:sys.boot_completed=1 chmod 444 /sys/kernel/debug/page_owner + + # Create mm_event trace point. + # For legacy devices, only mm_event is using this trace instance. + # Debugfs is only used in legacy devices and going to be deprecated. + # If others want to put more,it should get hard review from pixel-perf-team. + mkdir /sys/kernel/tracing/instances/pixel 0755 system system + chown system system /sys/kernel/tracing/instances/pixel/trace + chmod 0660 /sys/kernel/tracing/instances/pixel/trace + chown system system /sys/kernel/tracing/instances/pixel/tracing_on + chmod 0660 /sys/kernel/tracing/instances/pixel/tracing_on + write /sys/kernel/tracing/instances/pixel/buffer_size_kb 64 + write /sys/kernel/tracing/instances/pixel/events/cma/cma_alloc_busy_retry/enable 1 + write /sys/kernel/tracing/instances/pixel/events/cma/cma_alloc_start/enable 1 + write /sys/kernel/tracing/instances/pixel/events/cma/cma_alloc_info/enable 1 + +# turns off tracing right before bugreporting to keep more traces +on property:init.svc.dumpstatez=running + write /sys/kernel/tracing/instances/pixel/tracing_on 0 + +on property:init.svc.dumpstatez=stopped + write /sys/kernel/tracing/instances/pixel/tracing_on 1 + +on property:init.svc.bugreport=running + write /sys/kernel/tracing/instances/pixel/tracing_on 0 + +on property:init.svc.bugreport=stopped + write /sys/kernel/tracing/instances/pixel/tracing_on 1 + +on property:init.svc.bugreportd=running + write /sys/kernel/tracing/instances/pixel/tracing_on 0 + +on property:init.svc.bugreportd=stopped + write /sys/kernel/tracing/instances/pixel/tracing_on 1 |