arch/s390/include/asm/ftrace.lds.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef DIV_ROUND_UP
   3 #define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
   4 #endif
   5
   6 #define SIZEOF_MCOUNT_LOC_ENTRY 8
   7 #define SIZEOF_FTRACE_HOTPATCH_TRAMPOLINE 24
   8 #define FTRACE_HOTPATCH_TRAMPOLINES_SIZE(n)                                    \
   9         DIV_ROUND_UP(SIZEOF_FTRACE_HOTPATCH_TRAMPOLINE * (n),                  \
  10                      SIZEOF_MCOUNT_LOC_ENTRY)
  11
  12 #ifdef CONFIG_FUNCTION_TRACER
  13 #define FTRACE_HOTPATCH_TRAMPOLINES_TEXT                                       \
  14         . = ALIGN(8);                                                          \
  15         __ftrace_hotpatch_trampolines_start = .;                               \
  16         . = . + FTRACE_HOTPATCH_TRAMPOLINES_SIZE(__stop_mcount_loc -           \
  17                                                  __start_mcount_loc);          \
  18         __ftrace_hotpatch_trampolines_end = .;
  19 #else
  20 #define FTRACE_HOTPATCH_TRAMPOLINES_TEXT
  21 #endif