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Commit 01851eac authored by Dima Zavin's avatar Dima Zavin Committed by Android Git Automerger
Browse files

am 823ebc4d: charger: dump the last_kmsg when going into charger mode 

* commit '823ebc4d':
  charger: dump the last_kmsg when going into charger mode
parents 9892aa5d 823ebc4d

charger/charger.c

+55 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
#include <cutils/android_reboot.h>

#include <cutils/klog.h>

#include <cutils/list.h>

#include <cutils/misc.h>

#include <cutils/uevent.h>



#include "minui/minui.h"
@@ -60,6 +61,9 @@ 


#define BATTERY_FULL_THRESH     95



#define LAST_KMSG_PATH          "/proc/last_kmsg"

#define LAST_KMSG_MAX_SZ        (32 * 1024)



#define LOGE(x...) do { KLOG_ERROR("charger", x); } while (0)

#define LOGI(x...) do { KLOG_INFO("charger", x); } while (0)

#define LOGV(x...) do { KLOG_DEBUG("charger", x); } while (0)
@@ -188,6 +192,53 @@ static void clear_screen(void) 
    gr_fill(0, 0, gr_fb_width(), gr_fb_height());

};



#define MAX_KLOG_WRITE_BUF_SZ 256



static void dump_last_kmsg(void)

{

    char *buf;

    char *ptr;

    unsigned sz = 0;

    int len;



    LOGI("\n");

    LOGI("*************** LAST KMSG ***************\n");

    LOGI("\n");

    buf = load_file(LAST_KMSG_PATH, &sz);

    if (!buf || !sz) {

        LOGI("last_kmsg not found. Cold reset?\n");

        goto out;

    }



    len = min(sz, LAST_KMSG_MAX_SZ);

    ptr = buf + (sz - len);



    while (len > 0) {

        int cnt = min(len, MAX_KLOG_WRITE_BUF_SZ);

        char yoink;

        char *nl;



        nl = memrchr(ptr, '\n', cnt - 1);

        if (nl)

            cnt = nl - ptr + 1;



        yoink = ptr[cnt];

        ptr[cnt] = '\0';

        KLOG_INFO("", "%s", ptr);

        ptr[cnt] = yoink;



        len -= cnt;

        ptr += cnt;

    }



    free(buf);



out:

    LOGI("\n");

    LOGI("************* END LAST KMSG *************\n");

    LOGI("\n");

}



static int read_file(const char *path, char *buf, size_t sz)

{

    int fd;
@@ -863,6 +914,10 @@ int main(int argc, char **argv) 
    klog_init();

    klog_set_level(CHARGER_KLOG_LEVEL);



    dump_last_kmsg();



    LOGI("--------------- STARTING CHARGER MODE ---------------\n");



    gr_init();

    gr_font_size(&char_width, &char_height);