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Commit b016d870 authored by Ben Hutchings's avatar Ben Hutchings Committed by Ingo Molnar
Browse files

tools/lib/lockdep: Fix 'set but not used' warnings 



liblockdep defines trivial macros for working with interrupt flags, as
interrupts are never disabled in userland.  This results in warnings
from gcc when -Wunused-but-set-variable is enabled, and it is enabled
by -Wall.  Fix this by evaluating the flags parameter and casting it to
void.

Signed-off-by: default avatarBen Hutchings <ben@decadent.org.uk>
Signed-off-by: default avatarSasha 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/20170525130005.5947-7-alexander.levin@verizon.com


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent bb7ea2a9

tools/lib/lockdep/uinclude/linux/irqflags.h

+4 −4
Original line number Diff line number Diff line
@@ -17,19 +17,19 @@ 
#define raw_local_irq_disable() do { } while (0)

#define raw_local_irq_enable() do { } while (0)

#define raw_local_irq_save(flags) ((flags) = 0)

#define raw_local_irq_restore(flags) do { } while (0)

#define raw_local_irq_restore(flags) ((void)(flags))

#define raw_local_save_flags(flags) ((flags) = 0)

#define raw_irqs_disabled_flags(flags) do { } while (0)

#define raw_irqs_disabled_flags(flags) ((void)(flags))

#define raw_irqs_disabled() 0

#define raw_safe_halt()



#define local_irq_enable() do { } while (0)

#define local_irq_disable() do { } while (0)

#define local_irq_save(flags) ((flags) = 0)

#define local_irq_restore(flags) do { } while (0)

#define local_irq_restore(flags) ((void)(flags))

#define local_save_flags(flags)	((flags) = 0)

#define irqs_disabled() (1)

#define irqs_disabled_flags(flags) (0)

#define irqs_disabled_flags(flags) ((void)(flags), 0)

#define safe_halt() do { } while (0)



#define trace_lock_release(x, y)