On Fri, 5 Dec 2025 12:52:35 -0500 "Yury Norov (NVIDIA)" <[email protected]>
wrote:
> Tracing is a half of the kernel.h in terms of LOCs, although it's
> a self-consistent part. It is intended for quick debugging purposes
> and isn't used by the normal tracing utilities.
>
> Move it to a separate header. If someone needs to just throw a
> trace_printk() in their driver, they will not have to pull all
> the heavy tracing machinery.
>
> This is a pure move, except for removing a few 'extern's.
>
This one blows up my x86_64 allmodconfig, gcc-15.2.0:
In file included from ./include/linux/string.h:386,
from ./include/linux/trace_printk.h:9,
from ./include/linux/kernel.h:34,
from arch/x86/purgatory/purgatory.c:12:
./include/linux/fortify-string.h:626:63: error: expected identifier or '('
before '{' token
626 | p_size_field, q_size_field, op) ({
\
| ^
./include/linux/fortify-string.h:694:27: note: in expansion of macro
'__fortify_memcpy_chk'
694 | #define memmove(p, q, s) __fortify_memcpy_chk(p, q, s,
\
| ^~~~~~~~~~~~~~~~~~~~
arch/x86/purgatory/../boot/string.h:11:7: note: in expansion of macro 'memmove'
11 | void *memmove(void *dst, const void *src, size_t len);
| ^~~~~~~
./include/linux/fortify-string.h:258:9: error: expected identifier or '('
before '__builtin_choose_expr'
258 | __builtin_choose_expr(__is_constexpr(__builtin_strlen(p)),
\
| ^~~~~~~~~~~~~~~~~~~~~
arch/x86/purgatory/../boot/string.h:23:15: note: in expansion of macro 'strlen'
23 | extern size_t strlen(const char *s);
| ^~~~~~
make[4]: *** [scripts/Makefile.build:287: arch/x86/purgatory/purgatory.o] Error
1
make[3]: *** [scripts/Makefile.build:556: arch/x86/purgatory] Error 2
make[2]: *** [scripts/Makefile.build:556: arch/x86] Error 2
make[1]: *** [/usr/src/25/Makefile:2054: .] Error 2
make: *** [Makefile:248: __sub-make] Error 2
