From: Peter Zijlstra <peterz@infradead.org>
To: tglx@linutronix.de, mingo@kernel.org, juri.lelli@redhat.com,
vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de,
bristot@redhat.com, bsingharora@gmail.com, pbonzini@redhat.com,
maz@kernel.org
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
peterz@infradead.org, riel@surriel.com, hannes@cmpxchg.org
Subject: [PATCH 1/6] delayacct: Use sched_clock()
Date: Wed, 05 May 2021 12:59:41 +0200 [thread overview]
Message-ID: <20210505111525.001031466@infradead.org> (raw)
In-Reply-To: 20210505105940.190490250@infradead.org
Like all scheduler statistics, use sched_clock() based time.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
kernel/delayacct.c | 22 ++++++++++------------
1 file changed, 10 insertions(+), 12 deletions(-)
--- a/kernel/delayacct.c
+++ b/kernel/delayacct.c
@@ -7,9 +7,9 @@
#include <linux/sched.h>
#include <linux/sched/task.h>
#include <linux/sched/cputime.h>
+#include <linux/sched/clock.h>
#include <linux/slab.h>
#include <linux/taskstats.h>
-#include <linux/time.h>
#include <linux/sysctl.h>
#include <linux/delayacct.h>
#include <linux/module.h>
@@ -42,10 +42,9 @@ void __delayacct_tsk_init(struct task_st
* Finish delay accounting for a statistic using its timestamps (@start),
* accumalator (@total) and @count
*/
-static void delayacct_end(raw_spinlock_t *lock, u64 *start, u64 *total,
- u32 *count)
+static void delayacct_end(raw_spinlock_t *lock, u64 *start, u64 *total, u32 *count)
{
- s64 ns = ktime_get_ns() - *start;
+ s64 ns = local_clock() - *start;
unsigned long flags;
if (ns > 0) {
@@ -58,7 +57,7 @@ static void delayacct_end(raw_spinlock_t
void __delayacct_blkio_start(void)
{
- current->delays->blkio_start = ktime_get_ns();
+ current->delays->blkio_start = local_clock();
}
/*
@@ -151,21 +150,20 @@ __u64 __delayacct_blkio_ticks(struct tas
void __delayacct_freepages_start(void)
{
- current->delays->freepages_start = ktime_get_ns();
+ current->delays->freepages_start = local_clock();
}
void __delayacct_freepages_end(void)
{
- delayacct_end(
- ¤t->delays->lock,
- ¤t->delays->freepages_start,
- ¤t->delays->freepages_delay,
- ¤t->delays->freepages_count);
+ delayacct_end(¤t->delays->lock,
+ ¤t->delays->freepages_start,
+ ¤t->delays->freepages_delay,
+ ¤t->delays->freepages_count);
}
void __delayacct_thrashing_start(void)
{
- current->delays->thrashing_start = ktime_get_ns();
+ current->delays->thrashing_start = local_clock();
}
void __delayacct_thrashing_end(void)
next prev parent reply other threads:[~2021-05-05 11:21 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-05 10:59 [PATCH 0/6] sched,delayacct: Some cleanups Peter Zijlstra
2021-05-05 10:59 ` Peter Zijlstra [this message]
2021-05-05 14:40 ` [PATCH 1/6] delayacct: Use sched_clock() Rik van Riel
2021-05-06 13:59 ` Johannes Weiner
2021-05-06 14:17 ` Peter Zijlstra
2021-05-06 15:17 ` Johannes Weiner
2021-05-07 12:40 ` Balbir Singh
2021-05-12 10:43 ` Mel Gorman
2021-05-05 10:59 ` [PATCH 2/6] sched: Rename sched_info_{queued,dequeued} Peter Zijlstra
2021-05-05 14:39 ` Rik van Riel
2021-05-06 13:59 ` Johannes Weiner
2021-05-10 8:45 ` Balbir Singh
2021-05-12 10:49 ` Mel Gorman
2021-05-05 10:59 ` [PATCH 3/6] sched: Simplify sched_info_on() Peter Zijlstra
2021-05-06 14:03 ` Johannes Weiner
2021-05-12 11:10 ` Mel Gorman
2021-05-12 11:32 ` Peter Zijlstra
2021-05-12 12:51 ` Mel Gorman
2021-05-05 10:59 ` [PATCH 4/6] kvm: Select SCHED_INFO instead of TASK_DELAY_ACCT Peter Zijlstra
2021-05-05 11:37 ` Paolo Bonzini
2021-05-06 14:38 ` Marc Zyngier
2021-05-07 12:42 ` Balbir Singh
2021-05-12 11:11 ` Mel Gorman
2021-05-05 10:59 ` [PATCH 5/6] delayacct: Add static_branch in scheduler hooks Peter Zijlstra
2021-05-06 14:05 ` Johannes Weiner
2021-05-10 8:42 ` Balbir Singh
2021-05-12 11:13 ` Mel Gorman
2021-05-05 10:59 ` [PATCH 6/6] [RFC] delayacct: Default disabled Peter Zijlstra
2021-05-12 11:35 ` Mel Gorman
2021-05-05 22:29 ` [PATCH 0/6] sched,delayacct: Some cleanups Balbir Singh
2021-05-06 9:13 ` Peter Zijlstra
2021-05-07 12:38 ` Balbir Singh
2021-05-12 11:34 ` Mel Gorman
2021-05-12 11:38 ` Peter Zijlstra
2021-05-12 12:23 ` Paul Wise
2021-05-12 13:00 ` Mel Gorman
2021-05-13 1:29 ` Paul Wise
2021-06-25 0:50 ` Paul Wise
2021-05-07 9:05 ` Thomas Gleixner
2021-05-10 7:08 ` Ingo Molnar
2021-05-10 12:05 ` [PATCH 7/6] delayacct: Add sysctl to enable at runtime Peter Zijlstra
2021-05-10 12:06 ` Peter Zijlstra
2021-05-12 11:40 ` Mel Gorman
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