At present samus reports about 5600 DMIPS. With the default iteration count this is OK, but if 10 million runs are performed it overflows. Fix it.
Signed-off-by: Simon Glass sjg@chromium.org ---
lib/dhry/cmd_dhry.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/lib/dhry/cmd_dhry.c b/lib/dhry/cmd_dhry.c index 5dc191e..d7e1e6a 100644 --- a/lib/dhry/cmd_dhry.c +++ b/lib/dhry/cmd_dhry.c @@ -6,11 +6,13 @@
#include <common.h> #include <command.h> +#include <div64.h> #include "dhry.h"
static int do_dhry(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { - ulong start, duration, dhry_per_sec, vax_mips; + ulong start, duration, vax_mips; + u64 dhry_per_sec; int iterations = 1000000;
if (argc > 1) @@ -19,10 +21,10 @@ static int do_dhry(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) start = get_timer(0); dhry(iterations); duration = get_timer(start); - dhry_per_sec = iterations * 1000 / duration; + dhry_per_sec = lldiv(iterations * 1000ULL, duration); vax_mips = dhry_per_sec / 1757; printf("%d iterations in %lu ms: %lu/s, %lu DMIPS\n", iterations, - duration, dhry_per_sec, vax_mips); + duration, (ulong)dhry_per_sec, vax_mips);
return 0; }