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| author | Ben Hutchings <ben@decadent.org.uk> | 2017-05-25 15:58:37 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-06-05 10:28:05 +0300 |
| commit | bb7ea2a9af4c98ed70adf7627a2ba5d1ff1725e0 (patch) | |
| tree | c464ae9e67e00ade2291537a42488b997e3b6ff8 /tools/lib/lockdep/uinclude/linux/kernel.h | |
| parent | db8f7796c491a7b0a220a89a4abd9134f3906f43 (diff) | |
| download | linux-bb7ea2a9af4c98ed70adf7627a2ba5d1ff1725e0.tar.xz | |
tools/lib/lockdep: Fix 'unused value' warnings
liblockdep defines various macros that may expand to an expression
with no effect, while the in-kernel definition does have an effect.
This results in warnings from gcc when -Wunused-value is enabled, and
is is enabled by -Wall. Fix this by introducing trivial functions,
as function return values are generally allowed to be ignored.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: a.p.zijlstra@chello.nl
Link: http://lkml.kernel.org/r/20170525130005.5947-6-alexander.levin@verizon.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/lib/lockdep/uinclude/linux/kernel.h')
| -rw-r--r-- | tools/lib/lockdep/uinclude/linux/kernel.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/tools/lib/lockdep/uinclude/linux/kernel.h b/tools/lib/lockdep/uinclude/linux/kernel.h index da87bd9ad2c1..021cff4f4e3d 100644 --- a/tools/lib/lockdep/uinclude/linux/kernel.h +++ b/tools/lib/lockdep/uinclude/linux/kernel.h @@ -22,10 +22,16 @@ _max1 > _max2 ? _max1 : _max2; }) #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) -#define WARN_ON(x) (x) -#define WARN_ON_ONCE(x) (x) + +static inline int lockdep_warn(int condition) +{ + return condition; +} +#define WARN_ON(x) lockdep_warn(x) +#define WARN_ON_ONCE(x) WARN_ON(x) +#define WARN(x, y...) WARN_ON(x) + #define likely(x) (x) -#define WARN(x, y...) (x) #define uninitialized_var(x) x #define __init #define noinline |