Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S941790AbcKQSLo (ORCPT ); Thu, 17 Nov 2016 13:11:44 -0500 Received: from mail-wm0-f66.google.com ([74.125.82.66]:36345 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S941581AbcKQSJz (ORCPT ); Thu, 17 Nov 2016 13:09:55 -0500 From: Frederic Weisbecker To: LKML Cc: Frederic Weisbecker , Tony Luck , Wanpeng Li , Peter Zijlstra , Michael Ellerman , Heiko Carstens , Benjamin Herrenschmidt , Thomas Gleixner , Paul Mackerras , Ingo Molnar , Fenghua Yu , Rik van Riel , Martin Schwidefsky , Stanislaw Gruszka Subject: [PATCH 32/36] s390: Make arch_cpu_idle_time() to return nsecs Date: Thu, 17 Nov 2016 19:08:39 +0100 Message-Id: <1479406123-24785-33-git-send-email-fweisbec@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1479406123-24785-1-git-send-email-fweisbec@gmail.com> References: <1479406123-24785-1-git-send-email-fweisbec@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2777 Lines: 82 This way we don't need to deal with cputime_t details from the core code. Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Heiko Carstens Cc: Martin Schwidefsky Cc: Tony Luck Cc: Fenghua Yu Cc: Peter Zijlstra Cc: Rik van Riel Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Stanislaw Gruszka Cc: Wanpeng Li Signed-off-by: Frederic Weisbecker --- arch/s390/include/asm/cputime.h | 2 +- arch/s390/kernel/idle.c | 5 +++-- fs/proc/stat.c | 4 ++-- 3 files changed, 6 insertions(+), 5 deletions(-) diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h index 221b454..9a94481 100644 --- a/arch/s390/include/asm/cputime.h +++ b/arch/s390/include/asm/cputime.h @@ -141,7 +141,7 @@ static inline clock_t cputime64_to_clock_t(cputime64_t cputime) return clock; } -cputime64_t arch_cpu_idle_time(int cpu); +u64 arch_cpu_idle_time(int cpu); #define arch_idle_time(cpu) arch_cpu_idle_time(cpu) diff --git a/arch/s390/kernel/idle.c b/arch/s390/kernel/idle.c index 99f1d81..8c081ca 100644 --- a/arch/s390/kernel/idle.c +++ b/arch/s390/kernel/idle.c @@ -84,7 +84,7 @@ static ssize_t show_idle_time(struct device *dev, } DEVICE_ATTR(idle_time_us, 0444, show_idle_time, NULL); -cputime64_t arch_cpu_idle_time(int cpu) +u64 arch_cpu_idle_time(int cpu) { struct s390_idle_data *idle = &per_cpu(s390_idle, cpu); unsigned long long now, idle_enter, idle_exit; @@ -96,7 +96,8 @@ cputime64_t arch_cpu_idle_time(int cpu) idle_enter = ACCESS_ONCE(idle->clock_idle_enter); idle_exit = ACCESS_ONCE(idle->clock_idle_exit); } while (read_seqcount_retry(&idle->seqcount, seq)); - return idle_enter ? ((idle_exit ?: now) - idle_enter) : 0; + + return cputime_to_nsec(idle_enter ? ((idle_exit ?: now) - idle_enter) : 0); } void arch_cpu_idle_enter(void) diff --git a/fs/proc/stat.c b/fs/proc/stat.c index 44475a4..e47c3e8 100644 --- a/fs/proc/stat.c +++ b/fs/proc/stat.c @@ -27,7 +27,7 @@ static u64 get_idle_time(int cpu) idle = kcpustat_cpu(cpu).cpustat[CPUTIME_IDLE]; if (cpu_online(cpu) && !nr_iowait_cpu(cpu)) - idle += cputime_to_nsecs(arch_idle_time(cpu)); + idle += arch_idle_time(cpu); return idle; } @@ -37,7 +37,7 @@ static u64 get_iowait_time(int cpu) iowait = kcpustat_cpu(cpu).cpustat[CPUTIME_IOWAIT]; if (cpu_online(cpu) && nr_iowait_cpu(cpu)) - iowait += cputime_to_nsecs(arch_idle_time(cpu)); + iowait += arch_idle_time(cpu); return iowait; } -- 2.7.4