Simple utilty functions used by patches later in the series
Signed-off-by: Sandy Harris <sandyinchina@xxxxxxxxx>
---
drivers/char/random.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 3404a91edf29..c8618020b49f 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -356,6 +356,27 @@
#define CREATE_TRACE_POINTS
#include <trace/events/random.h>
+static void xor128(u32 *target, u32 *source)
+{
+ int i ;
+ for (i = 0 ; i < 4 ; i++)
+ *target++ ^= *source++ ;
+}
+
+static void add128(u32 *target, u32 *source)
+{
+ int i ;
+ for (i = 0 ; i < 4 ; i++)
+ *target++ += *source++ ;
+}
+
+static int get_hw_long(unsigned long *x)
+{
+ int ret ;
+ ret = get_random_bytes_arch((u8 *) x, 8) ;
+ return (ret == 8) ? 1 : 0 ;
+}
+
/* #define ADD_INTERRUPT_BENCH */
/*
--
2.25.1
