在 kernel 下打 log。 怪異現象與解決方式。

code

         battery_log(BAT_LOG_CRTI, "youchihwang abc10010 xxxaaa8-2\r\n");
         battery_log(BAT_LOG_CRTI, "youchihwang abc10010 xxxaaa8-3\n");
.....
.....
.....
         battery_log(BAT_LOG_CRTI, "youchihwang5 CHR_Type_num=%d\r\n",
                         CHR_Type_num);
         battery_log(BAT_LOG_CRTI, "youchihwang6 CHR_Type_num=%d\n",
                         CHR_Type_num);

log

 - ::29.519233         E [  278.055360]: ()[:pmic_thread][name:battery_common_fg_20&]youchihwang abc10010 xxxaaa8-
 - ::29.519239         E [  278.055366]: ()[:pmic_thread][name:battery_common_fg_20&]youchihwang abc10010 xxxaaa8-
....
....
....
   - ::55.445030         E [  243.981157]: ()[:pmic_thread][name:battery_common_fg_20&]youchihwang5 CHR_Type_num=
   - ::55.445038         E [  243.981165]: ()[:pmic_thread][name:battery_common_fg_20&]youchihwang6 CHR_Type_num=

小結：

在 kernel 中打 log，

不論是帶有參數的 log，或是沒有帶參數的 log，

在其後加上 "\r\n" 或 "\n" 的結果都是一樣的，

都會移到新的一行。

---

code

                 battery_log(BAT_LOG_CRTI, "youchihwang1 CHR_Type_num  :%d\r\n", CHR_Type_num);
                 battery_log(BAT_LOG_CRTI, "youchihwang1-1 CHR_Type_num:%d\n", CHR_Type_num);
                 battery_log(BAT_LOG_CRTI, "youchihwang2 CHR_Type_num  :%d \r\n", CHR_Type_num);
                 battery_log(BAT_LOG_CRTI, "youchihwang3 CHR_Type_num  : %d\r\n", CHR_Type_num);
                 battery_log(BAT_LOG_CRTI, "youchihwang4 CHR_Type_num  : %d \r\n", CHR_Type_num);
                 battery_log(BAT_LOG_CRTI, "youchihwang5 CHR_Type_num  =%d\r\n", CHR_Type_num);
                 battery_log(BAT_LOG_CRTI, "youchihwang6 CHR_Type_num  =%d\n", CHR_Type_num);
                 battery_log(BAT_LOG_CRTI, "youchihwang_CHR_Type_num   =%d\r\n", CHR_Type_num);

log

   - ::55.444985         E [  243.981112]()[:pmic_thread][name:battery_common_fg_20&]:
   - ::55.445002         E [  243.981129]()[:pmic_thread][name:battery_common_fg_20&]:
   - ::55.445010         E [  243.981137]()[:pmic_thread][name:battery_common_fg_20&]:
   - ::55.445017         E [  243.981144]()[:pmic_thread][name:battery_common_fg_20&]:
   - ::55.445024         E [  243.981151]()[:pmic_thread][name:battery_, common_fg_20&]:
   - ::55.445030         E [  243.981157]: ()[:pmic_thread][name:battery_common_fg_20&]youchihwang5 CHR_Type_num=
   - ::55.445038         E [  243.981165]: ()[:pmic_thread][name:battery_common_fg_20&]youchihwang6 CHR_Type_num=
   - ::55.445045         E [  243.981172]: ()[:pmic_thread][name:battery_common_fg_20&]youchihwang_CHR_Type_num=

小結：

在 kernel 中要打出有帶參數的 log （如上），

比對 前 5 個 與 後 3 個可得知，

在 "%" 前需加上 "=" 。