Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751496AbaLQFNU (ORCPT ); Wed, 17 Dec 2014 00:13:20 -0500 Received: from mail-pa0-f41.google.com ([209.85.220.41]:34900 "EHLO mail-pa0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750790AbaLQFNT (ORCPT ); Wed, 17 Dec 2014 00:13:19 -0500 From: Chunyan Zhang To: tglx@linutronix.de, davem@davemloft.net, john.stultz@linaro.org, dborkman@redhat.com Cc: arnd@linaro.org, linux-kernel@vger.kernel.org, zhang.lyra@gmail.com Subject: [PATCH] ktime.h: Introduce ktime_ms_delta Date: Wed, 17 Dec 2014 13:11:35 +0800 Message-Id: <1418793095-18780-1-git-send-email-zhang.chunyan@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/