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charger: dump the last_kmsg when going into charger mode 

Change-Id: I3b76bb5071d8a44adfb221774bb304bf296c8c1b
Signed-off-by: Dima Zavin <dima@android.com>
This commit is contained in:
Dima Zavin 2011-09-29 17:20:07 -07:00
parent 1a5ca61b28
commit 823ebc4d82
1 changed files with 55 additions and 0 deletions
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55
charger/charger.c
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@ -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);