diff options
Diffstat (limited to 'tools/objtool/tests/generic/fixtures/cold_function.c')
| -rw-r--r-- | tools/objtool/tests/generic/fixtures/cold_function.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/objtool/tests/generic/fixtures/cold_function.c b/tools/objtool/tests/generic/fixtures/cold_function.c new file mode 100644 index 000000000000..f6d410983ce2 --- /dev/null +++ b/tools/objtool/tests/generic/fixtures/cold_function.c @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Function the compiler may split into a hot part and a foo.cold part. */ + +static const char __modinfo[] + __attribute__((section(".modinfo"), used, aligned(1))) = "\0name=vmlinux"; + +static void __attribute__((cold, noinline)) slow_path(int x) +{ + __asm__ volatile("" :: "r"(x)); +} + +int target(int x) +{ + if (__builtin_expect(x < 0, 0)) + slow_path(x); +#ifdef PATCHED + return x + 2; +#else + return x + 1; +#endif +} |
