tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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