bfin-gc-sections.patch

   1 --- arch/blackfin/Kconfig
   2 +++ arch/blackfin/Kconfig
   3 @@ -398,6 +398,14 @@ config I_ENTRY_L1
   4           If enabled interrupt entry code (STORE/RESTORE CONTEXT) is linked
   5           into L1 instruction memory.(less latency)
   6
   7 +config GC_SECTIONS
   8 +       bool "Garbage collect unused functions and data"
   9 +       default n
  10 +       help
  11 +         Tell the compiler to place all functions and variables in their own
  12 +         sections and then tell the linker to discard any section that aren't
  13 +         referred to.
  14 +
  15  endmenu
  16
  17
  18 --- arch/blackfin/Makefile
  19 +++ arch/blackfin/Makefile
  20 @@ -18,6 +18,12 @@ CFLAGS_MODULE    += -mlong-calls
  21  KALLSYMS         += --symbol-prefix=_
  22
  23
  24 +ifdef CONFIG_GC_SECTIONS
  25 +CFLAGS         += -ffunction-sections -fdata-sections
  26 +LINKFLAGS      += --gc-sections
  27 +endif
  28 +
  29 +
  30  # setup the machine name and the machine dependent settings
  31  machine-$(CONFIG_BF531) := bf533
  32  machine-$(CONFIG_BF532) := bf533