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A number of internal functions in kcov are only called from generated code and don't technically need a declaration, but 'make W=1' warns about global symbols without a prototype: kernel/kcov.c:199:14: error: no previous prototype for '__sanitizer_cov_trace_pc' [-Werror=missing-prototypes] kernel/kcov.c:264:14: error: no previous prototype for '__sanitizer_cov_trace_cmp1' [-Werror=missing-prototypes] kernel/kcov.c:270:14: error: no previous prototype for '__sanitizer_cov_trace_cmp2' [-Werror=missing-prototypes] kernel/kcov.c:276:14: error: no previous prototype for '__sanitizer_cov_trace_cmp4' [-Werror=missing-prototypes] kernel/kcov.c:282:14: error: no previous prototype for '__sanitizer_cov_trace_cmp8' [-Werror=missing-prototypes] kernel/kcov.c:288:14: error: no previous prototype for '__sanitizer_cov_trace_const_cmp1' [-Werror=missing-prototypes] kernel/kcov.c:295:14: error: no previous prototype for '__sanitizer_cov_trace_const_cmp2' [-Werror=missing-prototypes] kernel/kcov.c:302:14: error: no previous prototype for '__sanitizer_cov_trace_const_cmp4' [-Werror=missing-prototypes] kernel/kcov.c:309:14: error: no previous prototype for '__sanitizer_cov_trace_const_cmp8' [-Werror=missing-prototypes] kernel/kcov.c:316:14: error: no previous prototype for '__sanitizer_cov_trace_switch' [-Werror=missing-prototypes] Adding prototypes for these in a header solves that problem, but now there is a mismatch between the built-in type and the prototype on 64-bit architectures because they expect some functions to take a 64-bit 'unsigned long' argument rather than an 'unsigned long long' u64 type: include/linux/kcov.h:84:6: error: conflicting types for built-in function '__sanitizer_cov_trace_switch'; expected 'void(long long unsigned int, void *)' [-Werror=builtin-declaration-mismatch] 84 | void __sanitizer_cov_trace_switch(u64 val, u64 *cases); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ Avoid this as well with a custom type definition. Link: https://lkml.kernel.org/r/20230517124944.929997-1-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Rong Tao <rongtao@cestc.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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acpi | ||
asm-generic | ||
clocksource | ||
crypto | ||
drm | ||
dt-bindings | ||
keys | ||
kunit | ||
kvm | ||
linux | ||
math-emu | ||
media | ||
memory | ||
misc | ||
net | ||
pcmcia | ||
ras | ||
rdma | ||
rv | ||
scsi | ||
soc | ||
sound | ||
target | ||
trace | ||
uapi | ||
ufs | ||
vdso | ||
video | ||
xen |