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Commit e5c96431 authored by Suren Baghdasaryan's avatar Suren Baghdasaryan
Browse files

lmkd: change defaults to disable event upgrade/downgrade logic 



(cherry pick from commit ad2fd915)

vmpressure upgrade/downgrade logic based on swap utilization works well
for low memory devices because of a small swap size, however for high
performance devices this measure is not a good indication of the memory
pressure because of large swap resources. This change sets the default
levels to disable upgrade/downgrade logic by default and each device
can set these properties appropriately.

Bug: 63631020
Test: alloc-stress

Change-Id: Ifd4fbd4d6bb3e82f0f87b029df94934f1e7b1c9c
Merged-In: Ifd4fbd4d6bb3e82f0f87b029df94934f1e7b1c9c
Signed-off-by: default avatarSuren Baghdasaryan <surenb@google.com>
parent cd7ad2f0

lmkd/lmkd.c

+8 −3
Original line number Original line Diff line number Diff line
@@ -921,9 +921,14 @@ int main(int argc __unused, char **argv __unused) { 
    level_oomadj[VMPRESS_LEVEL_CRITICAL] =

    level_oomadj[VMPRESS_LEVEL_CRITICAL] =

        property_get_int32("ro.lmk.critical", 0);

        property_get_int32("ro.lmk.critical", 0);

    debug_process_killing = property_get_bool("ro.lmk.debug", false);

    debug_process_killing = property_get_bool("ro.lmk.debug", false);

    enable_pressure_upgrade = property_get_bool("ro.lmk.critical_upgrade", false);



    upgrade_pressure = (int64_t)property_get_int32("ro.lmk.upgrade_pressure", 50);

    /* By default disable upgrade/downgrade logic */

    downgrade_pressure = (int64_t)property_get_int32("ro.lmk.downgrade_pressure", 60);

    enable_pressure_upgrade =

        property_get_bool("ro.lmk.critical_upgrade", false);

    upgrade_pressure =

        (int64_t)property_get_int32("ro.lmk.upgrade_pressure", 100);

    downgrade_pressure =

        (int64_t)property_get_int32("ro.lmk.downgrade_pressure", 100);

    is_go_device = property_get_bool("ro.config.low_ram", false);

    is_go_device = property_get_bool("ro.config.low_ram", false);





    // MCL_ONFAULT pins pages as they fault instead of loading

    // MCL_ONFAULT pins pages as they fault instead of loading