From: Julia Lawall <[email protected]>
The functions time_before, time_before_eq, time_after, and time_after_eq
are more robust for comparing jiffies against other values.
A simplified version of the semantic patch making this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@ change_compare_np @
expression E;
@@
(
- jiffies <= E
+ time_before_eq(jiffies,E)
|
- jiffies >= E
+ time_after_eq(jiffies,E)
|
- jiffies < E
+ time_before(jiffies,E)
|
- jiffies > E
+ time_after(jiffies,E)
)
@ include depends on change_compare_np @
@@
#include <linux/jiffies.h>
@ no_include depends on !include && change_compare_np @
@@
#include <linux/...>
+ #include <linux/jiffies.h>
// </smpl>
Signed-off-by: Julia Lawall <[email protected]>
---
diff -r -u -p a/arch/alpha/kernel/traps.c b/arch/alpha/kernel/traps.c
--- a/arch/alpha/kernel/traps.c 2007-10-22 11:24:57.000000000 +0200
+++ b/arch/alpha/kernel/traps.c 2007-12-23 20:30:39.000000000 +0100
@@ -16,6 +16,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kallsyms.h>
+#include <linux/jiffies.h>
#include <asm/gentrap.h>
#include <asm/uaccess.h>
@@ -781,7 +782,7 @@ do_entUnaUser(void __user * va, unsigned
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) {
--
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