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| author | 2021-07-27 15:17:29 +0000 | |
|---|---|---|
| committer | 2021-07-28 13:45:15 +0000 | |
| commit | b9ba8cf2eb8519ede72176d1541599d194f1dfd1 (patch) | |
| tree | c3210c5dcaad605fc2cecd58900eaca379e3a45d /libs/gui/BLASTBufferQueue.cpp | |
| parent | 2c7d7d9680fcd7d12c7a6bea4537c858bfd2ea1a (diff) | |
mm_events: Add knob to remove mm_event tracing instance
Only create mm_event tracing instance if
persist.mm_events.enabled=true. This saves ~5.5MB on low
memory devices that don't enable mm_events. The memory saved is
slab memory that would be allocated for the ftrace instance's
inode/dentry objects.
Set the per-CPU trace buffer sizes to 1KB by default to minimize
trace buffer memory usage if perfetto isn't started.
Also disable tracing by default, traced_probes will enable
as needed.
Bug: 194156702
Test: boot; ls /sys/kernel/tracing/instances -> No mm_events
Test: setprop persist.mm_events.enabled true; boot;
ls /sys/kernel/tracing/instances -> mm_events
Change-Id: I89d7e5e1cd0d32b5612bc419b1a1c4b8c3c8ade6
Diffstat (limited to 'libs/gui/BLASTBufferQueue.cpp')
0 files changed, 0 insertions, 0 deletions