diff options
| author | Uros Bizjak <ubizjak@gmail.com> | 2025-01-27 17:05:06 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-03-16 22:05:52 -0700 |
| commit | ac053946f5c40ce90ca7ccb75ed687612d9eccf9 (patch) | |
| tree | 43c7fe0e28f0bb22fae07d0190d6ada2a705da99 /include/linux/compiler.h | |
| parent | 6b7ce3134f68107438c99f8ea5424e08d418ca1b (diff) | |
compiler.h: introduce TYPEOF_UNQUAL() macro
Define TYPEOF_UNQUAL() to use __typeof_unqual__() as typeof operator when
available, to return unqualified type of the expression.
Current version of sparse doesn't know anything about __typeof_unqual__()
operator. Avoid the usage of __typeof_unqual__() when sparse checking is
active to prevent sparse errors with unknowing keyword.
Link: https://lkml.kernel.org/r/20250127160709.80604-3-ubizjak@gmail.com
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Nadav Amit <nadav.amit@gmail.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/compiler.h')
| -rw-r--r-- | include/linux/compiler.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 155385754824..3a7a537e13a3 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -210,6 +210,26 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val, #define __must_be_cstr(p) \ __BUILD_BUG_ON_ZERO_MSG(__annotated(p, nonstring), "must be cstr (NUL-terminated)") +/* + * Use __typeof_unqual__() when available. + * + * XXX: Remove test for __CHECKER__ once + * sparse learns about __typeof_unqual__(). + */ +#if CC_HAS_TYPEOF_UNQUAL && !defined(__CHECKER__) +# define USE_TYPEOF_UNQUAL 1 +#endif + +/* + * Define TYPEOF_UNQUAL() to use __typeof_unqual__() as typeof + * operator when available, to return an unqualified type of the exp. + */ +#if defined(USE_TYPEOF_UNQUAL) +# define TYPEOF_UNQUAL(exp) __typeof_unqual__(exp) +#else +# define TYPEOF_UNQUAL(exp) __typeof__(exp) +#endif + #endif /* __KERNEL__ */ /** |