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/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c
--- a/arch/x86/ia32/ia32_aout.c 2007-10-22 11:25:00.000000000 +0200
+++ b/arch/x86/ia32/ia32_aout.c 2007-12-23 20:31:29.000000000 +0100
@@ -25,6 +25,7 @@
#include <linux/binfmts.h>
#include <linux/personality.h>
#include <linux/init.h>
+#include <linux/jiffies.h>
#include <asm/system.h>
#include <asm/uaccess.h>
@@ -344,14 +345,15 @@ static int load_aout_binary(struct linux
#ifdef WARN_OLD
static unsigned long error_time, error_time2;
if ((ex.a_text & 0xfff || ex.a_data & 0xfff) &&
- (N_MAGIC(ex) != NMAGIC) && (jiffies-error_time2) > 5*HZ)
+ (N_MAGIC(ex) != NMAGIC) &&
+ time_after(jiffies, error_time2 + 5*HZ))
{
printk(KERN_NOTICE "executable not page aligned\n");
error_time2 = jiffies;
}
if ((fd_offset & ~PAGE_MASK) != 0 &&
- (jiffies-error_time) > 5*HZ)
+ time_after(jiffies, error_time + 5*HZ))
{
printk(KERN_WARNING
"fd_offset is not page aligned. Please convert program: %s\n",
@@ -467,7 +469,7 @@ static int load_aout_library(struct file
#ifdef WARN_OLD
static unsigned long error_time;
- if ((jiffies-error_time) > 5*HZ)
+ if (time_after(jiffies, error_time + 5*HZ))
{
printk(KERN_WARNING
"N_TXTOFF is not page aligned. Please convert library: %s\n",
--
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