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lmkd: Add support for persist.device_config.lmkd_native.* properties am: e7d82ee7e7 

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/memory/lmkd/+/15788312

Change-Id: I1cd180d62fb0f4553f6040b01417a73a6b0f4c70
This commit is contained in:
Suren Baghdasaryan 2021-09-15 23:19:17 +00:00 committed by Automerger Merge Worker
parent 78e7e0d352 e7d82ee7e7
commit 32a2f953b0
2 changed files with 64 additions and 20 deletions
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50
lmkd.cpp
View File

@ -114,6 +114,16 @@
#define STRINGIFY(x) STRINGIFY_INTERNAL(x)
#define STRINGIFY_INTERNAL(x) #x
/*
* Read lmk property with persist.device_config.lmkd_native.<name> overriding ro.lmk.<name>
* persist.device_config.lmkd_native.* properties are being set by experiments. If a new property
* can be controlled by an experiment then use GET_LMK_PROPERTY instead of property_get_xxx and
* add "on property" triggers in lmkd.rc to react to the experiment flag changes.
*/
#define GET_LMK_PROPERTY(type, name, def) \
property_get_##type("persist.device_config.lmkd_native." name, \
property_get_##type("ro.lmk." name, def))
/*
* PSI monitor tracking window size.
* PSI monitor generates events at most once per window,
@ -2984,7 +2994,7 @@ static bool init_psi_monitors() {
* use new kill strategy based on zone watermarks, free swap and thrashing stats
*/
bool use_new_strategy =
property_get_bool("ro.lmk.use_new_strategy", low_ram_device || !use_minfree_levels);
GET_LMK_PROPERTY(bool, "use_new_strategy", low_ram_device || !use_minfree_levels);
/* In default PSI mode override stall amounts using system properties */
if (use_new_strategy) {
@ -3100,7 +3110,7 @@ static void kernel_event_handler(int data __unused, uint32_t events __unused,
static bool init_monitors() {
/* Try to use psi monitor first if kernel has it */
use_psi_monitors = property_get_bool("ro.lmk.use_psi", true) &&
use_psi_monitors = GET_LMK_PROPERTY(bool, "use_psi", true) &&
init_psi_monitors();
/* Fall back to vmpressure */
if (!use_psi_monitors &&
@ -3415,43 +3425,43 @@ int issue_reinit() {
static void update_props() {
/* By default disable low level vmpressure events */
level_oomadj[VMPRESS_LEVEL_LOW] =
property_get_int32("ro.lmk.low", OOM_SCORE_ADJ_MAX + 1);
GET_LMK_PROPERTY(int32, "low", OOM_SCORE_ADJ_MAX + 1);
level_oomadj[VMPRESS_LEVEL_MEDIUM] =
property_get_int32("ro.lmk.medium", 800);
GET_LMK_PROPERTY(int32, "medium", 800);
level_oomadj[VMPRESS_LEVEL_CRITICAL] =
property_get_int32("ro.lmk.critical", 0);
debug_process_killing = property_get_bool("ro.lmk.debug", false);
GET_LMK_PROPERTY(int32, "critical", 0);
debug_process_killing = GET_LMK_PROPERTY(bool, "debug", false);
/* By default disable upgrade/downgrade logic */
enable_pressure_upgrade =
property_get_bool("ro.lmk.critical_upgrade", false);
GET_LMK_PROPERTY(bool, "critical_upgrade", false);
upgrade_pressure =
(int64_t)property_get_int32("ro.lmk.upgrade_pressure", 100);
(int64_t)GET_LMK_PROPERTY(int32, "upgrade_pressure", 100);
downgrade_pressure =
(int64_t)property_get_int32("ro.lmk.downgrade_pressure", 100);
(int64_t)GET_LMK_PROPERTY(int32, "downgrade_pressure", 100);
kill_heaviest_task =
property_get_bool("ro.lmk.kill_heaviest_task", false);
GET_LMK_PROPERTY(bool, "kill_heaviest_task", false);
low_ram_device = property_get_bool("ro.config.low_ram", false);
kill_timeout_ms =
(unsigned long)property_get_int32("ro.lmk.kill_timeout_ms", 100);
(unsigned long)GET_LMK_PROPERTY(int32, "kill_timeout_ms", 100);
use_minfree_levels =
property_get_bool("ro.lmk.use_minfree_levels", false);
GET_LMK_PROPERTY(bool, "use_minfree_levels", false);
per_app_memcg =
property_get_bool("ro.config.per_app_memcg", low_ram_device);
swap_free_low_percentage = clamp(0, 100, property_get_int32("ro.lmk.swap_free_low_percentage",
swap_free_low_percentage = clamp(0, 100, GET_LMK_PROPERTY(int32, "swap_free_low_percentage",
DEF_LOW_SWAP));
psi_partial_stall_ms = property_get_int32("ro.lmk.psi_partial_stall_ms",
psi_partial_stall_ms = GET_LMK_PROPERTY(int32, "psi_partial_stall_ms",
low_ram_device ? DEF_PARTIAL_STALL_LOWRAM : DEF_PARTIAL_STALL);
psi_complete_stall_ms = property_get_int32("ro.lmk.psi_complete_stall_ms",
psi_complete_stall_ms = GET_LMK_PROPERTY(int32, "psi_complete_stall_ms",
DEF_COMPLETE_STALL);
thrashing_limit_pct = max(0, property_get_int32("ro.lmk.thrashing_limit",
thrashing_limit_pct = max(0, GET_LMK_PROPERTY(int32, "thrashing_limit",
low_ram_device ? DEF_THRASHING_LOWRAM : DEF_THRASHING));
thrashing_limit_decay_pct = clamp(0, 100, property_get_int32("ro.lmk.thrashing_limit_decay",
thrashing_limit_decay_pct = clamp(0, 100, GET_LMK_PROPERTY(int32, "thrashing_limit_decay",
low_ram_device ? DEF_THRASHING_DECAY_LOWRAM : DEF_THRASHING_DECAY));
thrashing_critical_pct = max(0, property_get_int32("ro.lmk.thrashing_limit_critical",
thrashing_critical_pct = max(0, GET_LMK_PROPERTY(int32, "thrashing_limit_critical",
thrashing_limit_pct * 2));
swap_util_max = clamp(0, 100, property_get_int32("ro.lmk.swap_util_max", 100));
filecache_min_kb = property_get_int64("ro.lmk.filecache_min_kb", 0);
swap_util_max = clamp(0, 100, GET_LMK_PROPERTY(int32, "swap_util_max", 100));
filecache_min_kb = GET_LMK_PROPERTY(int64, "filecache_min_kb", 0);
}
int main(int argc, char **argv) {

34
lmkd.rc
View File

@ -9,3 +9,37 @@ service lmkd /system/bin/lmkd
on property:lmkd.reinit=1
exec_background /system/bin/lmkd --reinit
# properties most likely to be used in experiments
on property:persist.device_config.lmkd_native.debug=*
setprop lmkd.reinit 1
on property:persist.device_config.lmkd_native.kill_heaviest_task=*
setprop lmkd.reinit 1
on property:persist.device_config.lmkd_native.kill_timeout_ms=*
setprop lmkd.reinit 1
on property:persist.device_config.lmkd_native.swap_free_low_percentage=*
setprop lmkd.reinit 1
on property:persist.device_config.lmkd_native.psi_partial_stall_ms=*
setprop lmkd.reinit 1
on property:persist.device_config.lmkd_native.psi_complete_stall_ms=*
setprop lmkd.reinit 1
on property:persist.device_config.lmkd_native.thrashing_limit=*
setprop lmkd.reinit 1
on property:persist.device_config.lmkd_native.thrashing_limit_decay=*
setprop lmkd.reinit 1
on property:persist.device_config.lmkd_native.thrashing_limit_critical=*
setprop lmkd.reinit 1
on property:persist.device_config.lmkd_native.swap_util_max=*
setprop lmkd.reinit 1
on property:persist.device_config.lmkd_native.filecache_min_kb=*
setprop lmkd.reinit 1