The functions time_before, time_before_eq, time_after, and time_after_eq are more robust for comparing jiffies against other values.
So following patch implements usage of the time_after() macro, defined at linux/jiffies.h, which deals with wrapping correctly
Cc: Richard Henderson <[email protected]>
Signed-off-by: S.Çağlar Onur <[email protected]>
---
arch/alpha/kernel/traps.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/alpha/kernel/traps.c b/arch/alpha/kernel/traps.c
index 2dc7f9f..aa27106 100644
--- a/arch/alpha/kernel/traps.c
+++ b/arch/alpha/kernel/traps.c
@@ -8,6 +8,7 @@
* This file initializes the trap entry points
*/
+#include <linux/jiffies.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/tty.h>
@@ -781,7 +782,7 @@ do_entUnaUser(void __user * va, unsigned long opcode,
with the unaliged access. */
if (!test_thread_flag (TIF_UAC_NOPRINT)) {
- if (cnt >= 5 && jiffies - last_time > 5*HZ) {
+ if (cnt >= 5 && time_after(jiffies, last_time + 5 * HZ)) {
cnt = 0;
}
if (++cnt < 5) {
--
1.5.3.7