diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-01-18 10:27:48 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-01-18 10:31:11 -0300 |
| commit | c905ecfbb8e5d54bbcdd2a1706b925baf1728cfe (patch) | |
| tree | 80a68f3ef4018a4a4d5533de809f92f04274ef67 /tools/include | |
| parent | d352588bbc990ba51f925f124946c42e604c502e (diff) | |
tools headers: Syncronize linux/build_bug.h with the kernel sources
To pick up the changes in:
07a368b3f55a79d3 ("bug: introduce ASSERT_STRUCT_OFFSET")
This cset only introduces a build time assert macro, that may be useful
at some point for tooling, for now it silences this perf build warning:
Warning: Kernel ABI header at 'tools/include/linux/build_bug.h' differs from latest version at 'include/linux/build_bug.h'
diff -u tools/include/linux/build_bug.h include/linux/build_bug.h
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Maxim Levitsky <mlevitsk@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Link: http://lore.kernel.org/lkml/Y8f0jqQFYDAOBkHx@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/include')
| -rw-r--r-- | tools/include/linux/build_bug.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tools/include/linux/build_bug.h b/tools/include/linux/build_bug.h index cc7070c7439b..b4898ff085de 100644 --- a/tools/include/linux/build_bug.h +++ b/tools/include/linux/build_bug.h @@ -79,4 +79,13 @@ #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) #endif // static_assert + +/* + * Compile time check that field has an expected offset + */ +#define ASSERT_STRUCT_OFFSET(type, field, expected_offset) \ + BUILD_BUG_ON_MSG(offsetof(type, field) != (expected_offset), \ + "Offset of " #field " in " #type " has changed.") + + #endif /* _LINUX_BUILD_BUG_H */ |