x86, asm: use bool for bitops and other assembly outputs
The gcc people have confirmed that using "bool" when combined with
inline assembly always is treated as a byte-sized operand that can be
assumed to be 0 or 1, which is exactly what the SET instruction
emits. Change the output types and intermediate variables of as many
operations as practical to "bool".
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Link: http://lkml.kernel.org/r/1465414726-197858-3-git-send-email-hpa@linux.intel.com
Reviewed-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
diff --git a/include/linux/random.h b/include/linux/random.h
index e47e533..3d6e981 100644
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -95,27 +95,27 @@
#ifdef CONFIG_ARCH_RANDOM
# include <asm/archrandom.h>
#else
-static inline int arch_get_random_long(unsigned long *v)
+static inline bool arch_get_random_long(unsigned long *v)
{
return 0;
}
-static inline int arch_get_random_int(unsigned int *v)
+static inline bool arch_get_random_int(unsigned int *v)
{
return 0;
}
-static inline int arch_has_random(void)
+static inline bool arch_has_random(void)
{
return 0;
}
-static inline int arch_get_random_seed_long(unsigned long *v)
+static inline bool arch_get_random_seed_long(unsigned long *v)
{
return 0;
}
-static inline int arch_get_random_seed_int(unsigned int *v)
+static inline bool arch_get_random_seed_int(unsigned int *v)
{
return 0;
}
-static inline int arch_has_random_seed(void)
+static inline bool arch_has_random_seed(void)
{
return 0;
}