Move process initialization, mlockall() and sched_setscheduler() to
only occur if initialization succeeds and is enabled. This
conserves mlock'd memory and a FIFO processing slot if (deprecated)
kernel lowmemorykiller is active.
Cleanup: Android coding standard compliance.
Test: lmkd_unit_test
Bug: 33808187
Bug: 72838192
Change-Id: I51af0235c8eca4ef958ef2d83a8071ff58b49d78
(cherry pick from commit 0f10051805)
A number of tools and tests require communication with lmkd.
In order to avoid code duplication liblmkd_utils implements
functions commonly used when interacting with lmkd process.
Isolate communication protocol details into lmkd.h
Bug: 63631020
Change-Id: Id840983d55b7db60013d52dee0c3187943811822
Merged-In: Id840983d55b7db60013d52dee0c3187943811822
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
(cherry pick from commit c71355991d)
For tracing lmkd kills inside kernel it is useful to have traces
indicating when and which process lmkd is killing. By default the
tracing is disabled.
Bug: 63631020
Test: alloc-stress
Change-Id: I3ceb2bde0c292eec55855cb4535927f3b4c5d08b
Merged-In: I3ceb2bde0c292eec55855cb4535927f3b4c5d08b
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
It implements logging of following atoms:
-- LMK_STATE_CHANGED
-- LMK_KILL_OCCURRED
We would like to gather memory metrics of the process killed by LMKD
because by gathering this info we would be able to analyze and improve
system health by potentially reducing memory footprint of the process.
This feature would be available on production builds.
To know more about this see: http://go/android-p-memory-metrics
Bug: 65738734
Test: Tested manually
Change-Id: I064e0cdcb47c3b4c95d8b8d5654050c9812008d8
A number of tools and tests require communication with lmkd.
In order to avoid code duplication liblmkd_utils implements
functions commonly used when interacting with lmkd process.
Isolate communication protocol details into lmkd.h
Bug: 63631020
Change-Id: Id840983d55b7db60013d52dee0c3187943811822
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
For tracing lmkd kills inside kernel it is useful to have traces
indicating when and which process lmkd is killing. By default the
tracing is disabled.
Bug: 63631020
Test: alloc-stress
Change-Id: I3ceb2bde0c292eec55855cb4535927f3b4c5d08b
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
