• Kees Cook's avatar
    pstore/ram: Clarify resource reservation labels · 1227daa4
    Kees Cook authored
    When ramoops reserved a memory region in the kernel, it had an unhelpful
    label of "persistent_memory". When reading /proc/iomem, it would be
    repeated many times, did not hint that it was ramoops in particular,
    and didn't clarify very much about what each was used for:
    
    400000000-407ffffff : Persistent Memory (legacy)
      400000000-400000fff : persistent_memory
      400001000-400001fff : persistent_memory
    ...
      4000ff000-4000fffff : persistent_memory
    
    Instead, this adds meaningful labels for how the various regions are
    being used:
    
    400000000-407ffffff : Persistent Memory (legacy)
      400000000-400000fff : ramoops:dump(0/252)
      400001000-400001fff : ramoops:dump(1/252)
    ...
      4000fc000-4000fcfff : ramoops:dump(252/252)
      4000fd000-4000fdfff : ramoops:console
      4000fe000-4000fe3ff : ramoops:ftrace(0/3)
      4000fe400-4000fe7ff : ramoops:ftrace(1/3)
      4000fe800-4000febff : ramoops:ftrace(2/3)
      4000fec00-4000fefff : ramoops:ftrace(3/3)
      4000ff000-4000fffff : ramoops:pmsg
    Signed-off-by: default avatarKees Cook <keescook@chromium.org>
    Reviewed-by: default avatarJoel Fernandes (Google) <joel@joelfernandes.org>
    Tested-by: default avatarSai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
    Tested-by: default avatarGuenter Roeck <groeck@chromium.org>
    1227daa4
pstore_ram.h 2.94 KB