Commit-ID: 41fbf3b39d5eca01527338b4d0ee15ee1ae1023c
Gitweb: http://git.kernel.org/tip/41fbf3b39d5eca01527338b4d0ee15ee1ae1023c
Author: Chunyan Zhang <zhang.chunyan@xxxxxxxxxx>
AuthorDate: Wed, 17 Dec 2014 13:11:35 +0800
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Fri, 23 Jan 2015 11:47:15 +0100
ktime.h: Introduce ktime_ms_delta
This patch adds a reusable time difference function which returns the
difference in millisecond, as often used in some driver code, e.g.
mtd/test, media/rc, etc.
Signed-off-by: Chunyan Zhang <zhang.chunyan@xxxxxxxxxx>
Acked-by: Arnd Bergmann <arnd@xxxxxxxxxx>
Cc: zhang.lyra@xxxxxxxxx
Cc: davem@xxxxxxxxxxxxx
Cc: john.stultz@xxxxxxxxxx
Cc: dborkman@xxxxxxxxxx
Link: http://lkml.kernel.org/r/1418793095-18780-1-git-send-email-zhang.chunyan@xxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
include/linux/ktime.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/ktime.h b/include/linux/ktime.h
index c9d645a..891ea92 100644
--- a/include/linux/ktime.h
+++ b/include/linux/ktime.h
@@ -186,6 +186,11 @@ static inline s64 ktime_us_delta(const ktime_t later, const ktime_t earlier)
return ktime_to_us(ktime_sub(later, earlier));
}
+static inline s64 ktime_ms_delta(const ktime_t later, const ktime_t earlier)
+{
+ return ktime_to_ms(ktime_sub(later, earlier));
+}
+
static inline ktime_t ktime_add_us(const ktime_t kt, const u64 usec)
{
return ktime_add_ns(kt, usec * NSEC_PER_USEC);
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|