* [PATCH] ktime.h: Introduce ktime_ms_delta
[not found] <ktime_ms_delta>
@ 2014-12-17 5:11 ` Chunyan Zhang
2014-12-18 7:53 ` Arnd Bergmann
2015-01-23 10:48 ` [tip:timers/core] " tip-bot for Chunyan Zhang
0 siblings, 2 replies; 3+ messages in thread
From: Chunyan Zhang @ 2014-12-17 5:11 UTC (permalink / raw)
To: tglx, davem, john.stultz, dborkman; +Cc: arnd, linux-kernel, zhang.lyra
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@linaro.org>
---
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);
--
1.7.9.5
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] ktime.h: Introduce ktime_ms_delta
2014-12-17 5:11 ` [PATCH] ktime.h: Introduce ktime_ms_delta Chunyan Zhang
@ 2014-12-18 7:53 ` Arnd Bergmann
2015-01-23 10:48 ` [tip:timers/core] " tip-bot for Chunyan Zhang
1 sibling, 0 replies; 3+ messages in thread
From: Arnd Bergmann @ 2014-12-18 7:53 UTC (permalink / raw)
To: Chunyan Zhang
Cc: tglx, davem, john.stultz, dborkman, linux-kernel, zhang.lyra
On Wednesday 17 December 2014 13:11:35 Chunyan Zhang wrote:
> 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@linaro.org>
Acked-by: Arnd Bergmann <arnd@linaro.org>
Very nice!
^ permalink raw reply [flat|nested] 3+ messages in thread
* [tip:timers/core] ktime.h: Introduce ktime_ms_delta
2014-12-17 5:11 ` [PATCH] ktime.h: Introduce ktime_ms_delta Chunyan Zhang
2014-12-18 7:53 ` Arnd Bergmann
@ 2015-01-23 10:48 ` tip-bot for Chunyan Zhang
1 sibling, 0 replies; 3+ messages in thread
From: tip-bot for Chunyan Zhang @ 2015-01-23 10:48 UTC (permalink / raw)
To: linux-tip-commits; +Cc: arnd, linux-kernel, hpa, zhang.chunyan, mingo, tglx
Commit-ID: 41fbf3b39d5eca01527338b4d0ee15ee1ae1023c
Gitweb: http://git.kernel.org/tip/41fbf3b39d5eca01527338b4d0ee15ee1ae1023c
Author: Chunyan Zhang <zhang.chunyan@linaro.org>
AuthorDate: Wed, 17 Dec 2014 13:11:35 +0800
Committer: Thomas Gleixner <tglx@linutronix.de>
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@linaro.org>
Acked-by: Arnd Bergmann <arnd@linaro.org>
Cc: zhang.lyra@gmail.com
Cc: davem@davemloft.net
Cc: john.stultz@linaro.org
Cc: dborkman@redhat.com
Link: http://lkml.kernel.org/r/1418793095-18780-1-git-send-email-zhang.chunyan@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
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);
^ permalink raw reply related [flat|nested] 3+ messages in thread
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[not found] <ktime_ms_delta>
2014-12-17 5:11 ` [PATCH] ktime.h: Introduce ktime_ms_delta Chunyan Zhang
2014-12-18 7:53 ` Arnd Bergmann
2015-01-23 10:48 ` [tip:timers/core] " tip-bot for Chunyan Zhang
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