04-linux-kernel-configs.txt

Debugging information

  │ Symbol: DEBUG_FS [=y]                                                   │  
  │ Type  : boolean                                                         │  
  │ Prompt: Debug Filesystem                                                │  
  │   Location:                                                             │  
  │     -> Kernel hacking                                                   │  
  │ (1)   -> Compile-time checks and compiler options                       │  

For dynamic debug

CONFIG_DYNAMIC_DEBUG     

  │ Symbol: DYNAMIC_DEBUG [=n]                                              │  
  │ Type  : boolean                                                         │  
  │ Prompt: Enable dynamic printk() support                                 │  
  │   Location:                                                             │  
  │     -> Kernel hacking                                                   │  
  │ (1)   -> printk and dmesg options                                       │  
  │   Defined at lib/Kconfig.debug:47                                       │  
  │   Depends on: PRINTK [=y] && DEBUG_FS [=y]