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Groups > linux.kernel > #1571423
| From | tip-bot for Frederic Weisbecker <tipbot@zytor.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [tip:sched/core] sched/cputime: Push time to account_idle_time() in nsecs |
| Date | 2017-02-01 11:10 +0100 |
| Message-ID | <t601s-4A9-37@gated-at.bofh.it> (permalink) |
| References | <t5xiN-3Zl-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Commit-ID: 18b43a9bd7ae91185e398dd983fb4fffb9e81b3a
Gitweb: http://git.kernel.org/tip/18b43a9bd7ae91185e398dd983fb4fffb9e81b3a
Author: Frederic Weisbecker <fweisbec@gmail.com>
AuthorDate: Tue, 31 Jan 2017 04:09:39 +0100
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Wed, 1 Feb 2017 09:13:57 +0100
sched/cputime: Push time to account_idle_time() in nsecs
This is one more step toward converting cputime accounting to pure nsecs.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Link: http://lkml.kernel.org/r/1485832191-26889-24-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
arch/ia64/kernel/time.c | 2 +-
arch/powerpc/kernel/time.c | 2 +-
arch/s390/kernel/idle.c | 2 +-
include/linux/kernel_stat.h | 2 +-
kernel/sched/cputime.c | 18 +++++++++---------
5 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index ed98b26..5dc801d 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -73,7 +73,7 @@ void vtime_flush(struct task_struct *tsk)
account_guest_time(tsk, cycle_to_cputime(ti->gtime));
if (ti->idle_time)
- account_idle_time(cycle_to_cputime(ti->idle_time));
+ account_idle_time(cputime_to_nsecs(cycle_to_cputime(ti->idle_time)));
if (ti->stime) {
delta = cycle_to_cputime(ti->stime);
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 53e5982..739897a 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -405,7 +405,7 @@ void vtime_flush(struct task_struct *tsk)
account_steal_time(cputime_to_nsecs(acct->steal_time));
if (acct->idle_time)
- account_idle_time(acct->idle_time);
+ account_idle_time(cputime_to_nsecs(acct->idle_time));
if (acct->stime)
account_system_index_time(tsk, acct->stime, CPUTIME_SYSTEM);
diff --git a/arch/s390/kernel/idle.c b/arch/s390/kernel/idle.c
index 7a55c29..99f1d81 100644
--- a/arch/s390/kernel/idle.c
+++ b/arch/s390/kernel/idle.c
@@ -43,7 +43,7 @@ void enabled_wait(void)
idle->clock_idle_enter = idle->clock_idle_exit = 0ULL;
idle->idle_time += idle_time;
idle->idle_count++;
- account_idle_time(idle_time);
+ account_idle_time(cputime_to_nsecs(idle_time));
write_seqcount_end(&idle->seqcount);
}
NOKPROBE_SYMBOL(enabled_wait);
diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index 1d55d10..e1cd897 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -84,7 +84,7 @@ extern void account_system_time(struct task_struct *, int, cputime_t);
extern void account_system_index_time(struct task_struct *, cputime_t,
enum cpu_usage_stat);
extern void account_steal_time(u64);
-extern void account_idle_time(cputime_t);
+extern void account_idle_time(u64);
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
static inline void account_process_tick(struct task_struct *tsk, int user)
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
index 9a80287..fd5375f 100644
--- a/kernel/sched/cputime.c
+++ b/kernel/sched/cputime.c
@@ -218,15 +218,15 @@ void account_steal_time(u64 cputime)
* Account for idle time.
* @cputime: the cpu time spent in idle wait
*/
-void account_idle_time(cputime_t cputime)
+void account_idle_time(u64 cputime)
{
u64 *cpustat = kcpustat_this_cpu->cpustat;
struct rq *rq = this_rq();
if (atomic_read(&rq->nr_iowait) > 0)
- cpustat[CPUTIME_IOWAIT] += cputime_to_nsecs(cputime);
+ cpustat[CPUTIME_IOWAIT] += cputime;
else
- cpustat[CPUTIME_IDLE] += cputime_to_nsecs(cputime);
+ cpustat[CPUTIME_IDLE] += cputime;
}
/*
@@ -392,7 +392,7 @@ static void irqtime_account_process_tick(struct task_struct *p, int user_tick,
} else if (user_tick) {
account_user_time(p, cputime);
} else if (p == rq->idle) {
- account_idle_time(old_cputime);
+ account_idle_time(cputime);
} else if (p->flags & PF_VCPU) { /* System time or guest time */
account_guest_time(p, old_cputime);
@@ -504,7 +504,7 @@ void account_process_tick(struct task_struct *p, int user_tick)
else if ((p != rq->idle) || (irq_count() != HARDIRQ_OFFSET))
account_system_time(p, HARDIRQ_OFFSET, old_cputime);
else
- account_idle_time(old_cputime);
+ account_idle_time(cputime);
}
/*
@@ -513,15 +513,15 @@ void account_process_tick(struct task_struct *p, int user_tick)
*/
void account_idle_ticks(unsigned long ticks)
{
- cputime_t cputime, steal;
+ u64 cputime, steal;
if (sched_clock_irqtime) {
irqtime_account_idle_ticks(ticks);
return;
}
- cputime = jiffies_to_cputime(ticks);
- steal = steal_account_process_time(ULONG_MAX);
+ cputime = ticks * TICK_NSEC;
+ steal = cputime_to_nsecs(steal_account_process_time(ULONG_MAX));
if (steal >= cputime)
return;
@@ -787,7 +787,7 @@ void vtime_account_idle(struct task_struct *tsk)
{
cputime_t delta_cpu = get_vtime_delta(tsk);
- account_idle_time(delta_cpu);
+ account_idle_time(cputime_to_nsecs(delta_cpu));
}
void arch_vtime_task_switch(struct task_struct *prev)
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[PATCH RESEND 01/36] jiffies: Reuse TICK_NSEC instead of NSEC_PER_JIFFY Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 04:20 +0100
[PATCH RESEND 04/36] cputime: Convert kcpustat to nsecs Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 04:30 +0100
[tip:sched/core] sched/cputime: Convert kcpustat to nsecs tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 11:00 +0100
[PATCH RESEND 24/36] cputime: Push time to account_idle_time() in nsecs Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 04:30 +0100
[tip:sched/core] sched/cputime: Push time to account_idle_time() in nsecs tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 11:10 +0100
[PATCH RESEND 25/36] cputime: Push time to account_system_time() in nsecs Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 04:30 +0100
[tip:sched/core] sched/cputime: Push time to account_system_time() in nsecs tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 11:10 +0100
[PATCH RESEND 16/36] signal: Convert obsolete cputime type to nsecs Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 04:30 +0100
[tip:sched/core] signal: Convert obsolete cputime type to nsecs tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 11:10 +0100
[PATCH RESEND 27/36] vtime: Return nsecs instead of cputime_t to account Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 04:30 +0100
[tip:sched/core] sched/cputime, vtime: Return nsecs instead of cputime_t to account tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 11:10 +0100
[PATCH RESEND 09/36] alpha: Convert obsolete cputime_t to nsecs Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 04:30 +0100
[tip:sched/core] alpha: Convert obsolete cputime_t to nsecs tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 11:00 +0100
[PATCH RESEND 12/36] binfmt: Convert obsolete cputime type to nsecs Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 04:30 +0100
[tip:sched/core] fs/binfmt: Convert obsolete cputime type to nsecs tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 11:00 +0100
[PATCH RESEND 30/36] ia64: Convert vtime to use nsec units directly Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 04:40 +0100
[tip:sched/core] ia64: Convert vtime to use nsec units directly tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 11:10 +0100
[PATCH RESEND 05/36] macintosh/rack-meter: Remove cputime_t internal use Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 04:40 +0100
[tip:sched/core] macintosh/rack-meter: Convert cputime64_t use to u64 tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 12:00 +0100
[PATCH RESEND 07/36] cputime: Special API to return old-typed cputime Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 04:40 +0100
[tip:sched/core] sched/cputime: Introduce special task_cputime_t() API to return old-typed cputime tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 11:00 +0100
[PATCH RESEND 02/36] time: Introduce jiffies64_to_nsecs() Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 04:50 +0100
[tip:sched/core] time: Introduce jiffies64_to_nsecs() tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 11:00 +0100
[PATCH RESEND 26/36] cputime: Complete nsec conversion of tick based accounting Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 04:50 +0100
[tip:sched/core] sched/cputime: Complete nsec conversion of tick based accounting tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 11:10 +0100
[PATCH RESEND 17/36] cputime: Increment kcpustat directly on irqtime account Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 04:50 +0100
[tip:sched/core] sched/cputime: Increment kcpustat directly on irqtime account tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 11:10 +0100
[PATCH RESEND 10/36] x86: Convert obsolete cputime type to nsecs Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 05:20 +0100
[tip:sched/core] x86: Convert obsolete cputime type to nsecs tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 11:00 +0100
[PATCH RESEND 33/36] powerpc: Remove unused cputime definitions Frederic Weisbecker <fweisbec@gmail.com> - 2017-01-31 05:30 +0100
[tip:sched/core] powerpc, sched/cputime: Remove unused cputime definitions tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 11:10 +0100
[tip:sched/core] jiffies: Reuse TICK_NSEC instead of NSEC_PER_JIFFY tip-bot for Frederic Weisbecker <tipbot@zytor.com> - 2017-02-01 11:00 +0100
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