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Date: Wed, 6 Nov 2019 04:08:00 +0100
From: Frederic Weisbecker <frederic@...nel.org>
To: Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
Frederic Weisbecker <frederic@...nel.org>,
Jacek Anaszewski <jacek.anaszewski@...il.com>,
Wanpeng Li <wanpengli@...cent.com>,
Pavel Machek <pavel@....cz>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Thomas Gleixner <tglx@...utronix.de>,
Yauheni Kaliuta <yauheni.kaliuta@...hat.com>,
"Rafael J . Wysocki" <rjw@...ysocki.net>,
Viresh Kumar <viresh.kumar@...aro.org>,
Rik van Riel <riel@...riel.com>
Subject: [PATCH 2/9] sched/cputime: Standardize the kcpustat index based accounting functions
Sanitize a bit the functions that do cputime accounting with custom
kcpustat indexes:
* Rename account_system_index_time() to account_system_time_index() to
comply with account_guest/user_time_index()
* Use proper enum cpu_usage_stat type in account_system_time()
* Reorder task_group_account_field() parameters to comply with those of
account_*_time_index().
* Rename task_group_account_field()'s tmp parameter to cputime
* Precise the type of index in task_group_account_field(): enum cpu_usage_stat
Signed-off-by: Frederic Weisbecker <frederic@...nel.org>
Cc: Yauheni Kaliuta <yauheni.kaliuta@...hat.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Rik van Riel <riel@...riel.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Wanpeng Li <wanpengli@...cent.com>
Cc: Ingo Molnar <mingo@...nel.org>
---
arch/ia64/kernel/time.c | 6 +++---
arch/powerpc/kernel/time.c | 6 +++---
arch/s390/kernel/vtime.c | 2 +-
include/linux/kernel_stat.h | 2 +-
kernel/sched/cputime.c | 22 +++++++++++-----------
5 files changed, 19 insertions(+), 19 deletions(-)
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index 91b4024c9351..836e17c8b004 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -79,17 +79,17 @@ void vtime_flush(struct task_struct *tsk)
if (ti->stime) {
delta = cycle_to_nsec(ti->stime);
- account_system_index_time(tsk, delta, CPUTIME_SYSTEM);
+ account_system_time_index(tsk, delta, CPUTIME_SYSTEM);
}
if (ti->hardirq_time) {
delta = cycle_to_nsec(ti->hardirq_time);
- account_system_index_time(tsk, delta, CPUTIME_IRQ);
+ account_system_time_index(tsk, delta, CPUTIME_IRQ);
}
if (ti->softirq_time) {
delta = cycle_to_nsec(ti->softirq_time);
- account_system_index_time(tsk, delta, CPUTIME_SOFTIRQ);
+ account_system_time_index(tsk, delta, CPUTIME_SOFTIRQ);
}
ti->utime = 0;
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 84827da01d45..f03469fe398b 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -418,14 +418,14 @@ void vtime_flush(struct task_struct *tsk)
account_idle_time(cputime_to_nsecs(acct->idle_time));
if (acct->stime)
- account_system_index_time(tsk, cputime_to_nsecs(acct->stime),
+ account_system_time_index(tsk, cputime_to_nsecs(acct->stime),
CPUTIME_SYSTEM);
if (acct->hardirq_time)
- account_system_index_time(tsk, cputime_to_nsecs(acct->hardirq_time),
+ account_system_time_index(tsk, cputime_to_nsecs(acct->hardirq_time),
CPUTIME_IRQ);
if (acct->softirq_time)
- account_system_index_time(tsk, cputime_to_nsecs(acct->softirq_time),
+ account_system_time_index(tsk, cputime_to_nsecs(acct->softirq_time),
CPUTIME_SOFTIRQ);
vtime_flush_scaled(tsk, acct);
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 8df10d3c8f6c..3428f28d3df1 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -115,7 +115,7 @@ static void account_system_index_scaled(struct task_struct *p, u64 cputime,
enum cpu_usage_stat index)
{
p->stimescaled += cputime_to_nsecs(scale_vtime(cputime));
- account_system_index_time(p, cputime_to_nsecs(cputime), index);
+ account_system_time_index(p, cputime_to_nsecs(cputime), index);
}
/*
diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index 79781196eb25..1b9b97f6946e 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -92,7 +92,7 @@ static inline u64 kcpustat_field(struct kernel_cpustat *kcpustat,
extern void account_user_time(struct task_struct *, u64);
extern void account_guest_time(struct task_struct *, u64);
extern void account_system_time(struct task_struct *, int, u64);
-extern void account_system_index_time(struct task_struct *, u64,
+extern void account_system_time_index(struct task_struct *, u64,
enum cpu_usage_stat);
extern void account_steal_time(u64);
extern void account_idle_time(u64);
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
index 738ed7db615e..687b8684e480 100644
--- a/kernel/sched/cputime.c
+++ b/kernel/sched/cputime.c
@@ -95,8 +95,8 @@ static u64 irqtime_tick_accounted(u64 dummy)
#endif /* !CONFIG_IRQ_TIME_ACCOUNTING */
-static inline void task_group_account_field(struct task_struct *p, int index,
- u64 tmp)
+static inline void task_group_account_field(struct task_struct *p, u64 cputime,
+ enum cpu_usage_stat index)
{
/*
* Since all updates are sure to touch the root cgroup, we
@@ -104,9 +104,9 @@ static inline void task_group_account_field(struct task_struct *p, int index,
* is the only cgroup, then nothing else should be necessary.
*
*/
- __this_cpu_add(kernel_cpustat.cpustat[index], tmp);
+ __this_cpu_add(kernel_cpustat.cpustat[index], cputime);
- cgroup_account_cputime_field(p, index, tmp);
+ cgroup_account_cputime_field(p, index, cputime);
}
static void account_user_time_index(struct task_struct *p,
@@ -117,7 +117,7 @@ static void account_user_time_index(struct task_struct *p,
account_group_user_time(p, cputime);
/* Add user time to cpustat. */
- task_group_account_field(p, index, cputime);
+ task_group_account_field(p, cputime, index);
/* Account for user time used */
acct_account_cputime(p);
@@ -175,7 +175,7 @@ void account_guest_time(struct task_struct *p, u64 cputime)
* @cputime: the CPU time spent in kernel space since the last update
* @index: pointer to cpustat field that has to be updated
*/
-void account_system_index_time(struct task_struct *p,
+void account_system_time_index(struct task_struct *p,
u64 cputime, enum cpu_usage_stat index)
{
/* Add system time to process. */
@@ -183,7 +183,7 @@ void account_system_index_time(struct task_struct *p,
account_group_system_time(p, cputime);
/* Add system time to cpustat. */
- task_group_account_field(p, index, cputime);
+ task_group_account_field(p, cputime, index);
/* Account for system time used */
acct_account_cputime(p);
@@ -197,7 +197,7 @@ void account_system_index_time(struct task_struct *p,
*/
void account_system_time(struct task_struct *p, int hardirq_offset, u64 cputime)
{
- int index;
+ enum cpu_usage_stat index;
if ((p->flags & PF_VCPU) && (irq_count() - hardirq_offset == 0)) {
account_guest_time(p, cputime);
@@ -211,7 +211,7 @@ void account_system_time(struct task_struct *p, int hardirq_offset, u64 cputime)
else
index = CPUTIME_SYSTEM;
- account_system_index_time(p, cputime, index);
+ account_system_time_index(p, cputime, index);
}
/*
@@ -392,7 +392,7 @@ static void irqtime_account_process_tick(struct task_struct *p, int user_tick,
* So, we have to handle it separately here.
* Also, p->stime needs to be updated for ksoftirqd.
*/
- account_system_index_time(p, cputime, CPUTIME_SOFTIRQ);
+ account_system_time_index(p, cputime, CPUTIME_SOFTIRQ);
} else if (user_tick) {
account_user_time(p, cputime);
} else if (p == rq->idle) {
@@ -400,7 +400,7 @@ static void irqtime_account_process_tick(struct task_struct *p, int user_tick,
} else if (p->flags & PF_VCPU) { /* System time or guest time */
account_guest_time(p, cputime);
} else {
- account_system_index_time(p, cputime, CPUTIME_SYSTEM);
+ account_system_time_index(p, cputime, CPUTIME_SYSTEM);
}
}
--
2.23.0
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