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Commit 58891d59 authored by Robert Benea's avatar Robert Benea
Browse files

Make lmkd memory pressure levels configurable. 

By doing so different platforms can customize them accordingly.
For instance a low mem, 512MB device can do
ro.lmk.medium=400, while a device with more memory can keep
the default(800).

Test: tested on gobo.
Bug: 64316084
Change-Id: Ifc4f3853bc06f30488adb25883ccd9aaf683ba9b
parent f415d125

lmkd/lmkd.c

+8 −1
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ 
#include <sys/types.h>

#include <unistd.h>



#include <cutils/properties.h>

#include <cutils/sockets.h>

#include <log/log.h>

#include <processgroup/processgroup.h>
@@ -72,6 +73,9 @@ static int mpevfd[2]; 
#define CRITICAL_INDEX 1

#define MEDIUM_INDEX 0



static int medium_oomadj;

static int critical_oomadj;



/* control socket listen and data */

static int ctrl_lfd;

static int ctrl_dfd = -1;
@@ -643,7 +647,7 @@ static void mp_event_common(bool is_critical) { 
    int ret;

    unsigned long long evcount;

    bool first = true;

    int min_adj_score = is_critical ? 0 : 800;

    int min_adj_score = is_critical ? critical_oomadj : medium_oomadj;

    int index = is_critical ? CRITICAL_INDEX : MEDIUM_INDEX;



    ret = read(mpevfd[index], &evcount, sizeof(evcount));
@@ -822,6 +826,9 @@ int main(int argc __unused, char **argv __unused) { 
            .sched_priority = 1,

    };



    medium_oomadj = property_get_int32("ro.lmk.medium", 800);

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



    mlockall(MCL_FUTURE);

    sched_setscheduler(0, SCHED_FIFO, &param);

    if (!init())