The patch titled
Provide u64 version of jiffies_to_usecs() in kernel/tsacct.c (update)
has been added to the -mm tree. Its filename is
provide-u64-version-of-jiffies_to_usecs-in-kernel-tsacctc-update.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: Provide u64 version of jiffies_to_usecs() in kernel/tsacct.c (update)
From: Jonathan Lim <jlim@xxxxxxx>
This version implements a correction to jiffies_64_to_usecs() based on
feedback from Randy Dunlap and Roman Zippel.
Signed-off-by: Jonathan Lim <jlim@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "Randy.Dunlap" <rdunlap@xxxxxxxxxxxx>
Cc: Roman Zippel <zippel@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/time.c | 4 ++++
1 file changed, 4 insertions(+)
diff -puN kernel/time.c~provide-u64-version-of-jiffies_to_usecs-in-kernel-tsacctc-update kernel/time.c
--- a/kernel/time.c~provide-u64-version-of-jiffies_to_usecs-in-kernel-tsacctc-update
+++ a/kernel/time.c
@@ -271,7 +271,11 @@ EXPORT_SYMBOL(jiffies_to_usecs);
u64 jiffies_64_to_usecs(const u64 j)
{
+# if BITS_PER_LONG == 32
+ return ((u64)HZ_TO_USEC_MUL32 * j) >> HZ_TO_USEC_SHR32;
+# else
return div64_64(j*HZ_TO_USEC_NUM + HZ_TO_USEC_DEN-1, HZ_TO_USEC_DEN);
+# endif
}
EXPORT_SYMBOL(jiffies_64_to_usecs);
_
Patches currently in -mm which might be from jlim@xxxxxxx are
provide-u64-version-of-jiffies_to_usecs-in-kernel-tsacctc.patch
provide-u64-version-of-jiffies_to_usecs-in-kernel-tsacctc-update.patch
use-find_task_by_vpid-in-taskstats.patch
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