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From: Frederic Weisbecker <frederic@kernel.org>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Wanpeng Li <wanpengli@tencent.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Yauheni Kaliuta <yauheni.kaliuta@redhat.com>,
	Ingo Molnar <mingo@kernel.org>, Rik van Riel <riel@redhat.com>
Subject: [PATCH 17/25] sched/cputime: Standardize the kcpustat index based accounting functions
Date: Wed, 14 Nov 2018 03:46:01 +0100	[thread overview]
Message-ID: <1542163569-20047-18-git-send-email-frederic@kernel.org> (raw)
In-Reply-To: <1542163569-20047-1-git-send-email-frederic@kernel.org>

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@kernel.org>
Cc: Yauheni Kaliuta <yauheni.kaliuta@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wanpeng Li <wanpengli@tencent.com>
Cc: Ingo Molnar <mingo@kernel.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 a3b09ea..46a9798 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 cc591a4..6e6e0c8 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -422,14 +422,14 @@ 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 af48db3..b6b888d 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 86fdbce..049d973 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -82,7 +82,7 @@ static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu)
 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 63c4f0b..8f5dee2 100644
--- a/kernel/sched/cputime.c
+++ b/kernel/sched/cputime.c
@@ -94,8 +94,8 @@ 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
@@ -103,9 +103,9 @@ 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,
@@ -116,7 +116,7 @@ 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);
@@ -174,7 +174,7 @@ 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. */
@@ -182,7 +182,7 @@ 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);
@@ -196,7 +196,7 @@ 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);
@@ -210,7 +210,7 @@ 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);
 }
 
 /*
@@ -391,7 +391,7 @@ 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) {
@@ -399,7 +399,7 @@ 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);
 	}
 }
 
-- 
2.7.4


  parent reply	other threads:[~2018-11-14  2:46 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-14  2:45 [PATCH 00/25] sched/nohz: Make kcpustat vtime aware (Fix kcpustat on nohz_full) Frederic Weisbecker
2018-11-14  2:45 ` [PATCH 01/25] sched/vtime: Fix guest/system mis-accounting on task switch Frederic Weisbecker
2018-11-14  2:45 ` [PATCH 02/25] sched/vtime: Protect idle accounting under vtime seqcount Frederic Weisbecker
2018-11-20 13:19   ` Peter Zijlstra
2018-11-14  2:45 ` [PATCH 03/25] vtime: Rename vtime_account_system() to vtime_account_kernel() Frederic Weisbecker
2018-11-14  2:45 ` [PATCH 04/25] vtime: Spare a seqcount lock/unlock cycle on context switch Frederic Weisbecker
2018-11-20 13:25   ` Peter Zijlstra
2019-09-25 14:42     ` Frederic Weisbecker
2018-11-14  2:45 ` [PATCH 05/25] sched/vtime: Record CPU under seqcount for kcpustat needs Frederic Weisbecker
2018-11-14  2:45 ` [PATCH 06/25] sched/cputime: Add vtime idle task state Frederic Weisbecker
2018-11-14  2:45 ` [PATCH 07/25] sched/cputime: Add vtime guest " Frederic Weisbecker
2018-11-14  2:45 ` [PATCH 08/25] vtime: Exit vtime before exit_notify() Frederic Weisbecker
2018-11-20 13:54   ` Peter Zijlstra
2018-11-14  2:45 ` [PATCH 09/25] kcpustat: Track running task following vtime sequences Frederic Weisbecker
2018-11-20 13:58   ` Peter Zijlstra
2018-11-14  2:45 ` [PATCH 10/25] context_tracking: Remove context_tracking_active() Frederic Weisbecker
2018-11-14  2:45 ` [PATCH 11/25] context_tracking: s/context_tracking_is_enabled/context_tracking_enabled() Frederic Weisbecker
2018-11-14  2:45 ` [PATCH 12/25] context_tracking: Rename context_tracking_is_cpu_enabled() to context_tracking_enabled_this_cpu() Frederic Weisbecker
2018-11-14  2:45 ` [PATCH 13/25] context_tracking: Introduce context_tracking_enabled_cpu() Frederic Weisbecker
2018-11-20 14:02   ` Peter Zijlstra
2018-11-14  2:45 ` [PATCH 14/25] sched/vtime: Rename vtime_accounting_cpu_enabled() to vtime_accounting_enabled_this_cpu() Frederic Weisbecker
2018-11-14  2:45 ` [PATCH 15/25] sched/vtime: Introduce vtime_accounting_enabled_cpu() Frederic Weisbecker
2018-11-20 14:04   ` Peter Zijlstra
2018-11-14  2:46 ` [PATCH 16/25] sched/cputime: Allow to pass cputime index on user/guest accounting Frederic Weisbecker
2018-11-14  2:46 ` Frederic Weisbecker [this message]
2018-11-14  2:46 ` [PATCH 18/25] vtime: Track nice-ness on top of context switch Frederic Weisbecker
2018-11-20 14:09   ` Peter Zijlstra
2018-11-14  2:46 ` [PATCH 19/25] sched/vite: Handle nice updates under vtime Frederic Weisbecker
2018-11-20 14:17   ` Peter Zijlstra
2018-11-26 15:53     ` Frederic Weisbecker
2018-11-26 16:11       ` Peter Zijlstra
2018-11-26 18:41         ` Frederic Weisbecker
2018-11-14  2:46 ` [PATCH 20/25] sched/kcpustat: Introduce vtime-aware kcpustat accessor Frederic Weisbecker
2018-11-20 14:23   ` Peter Zijlstra
2018-11-20 22:40     ` Frederic Weisbecker
2018-11-21  8:18       ` Peter Zijlstra
2018-11-21  8:35         ` Peter Zijlstra
2018-11-21 16:33         ` Frederic Weisbecker
2018-11-14  2:46 ` [PATCH 21/25] procfs: Use vtime aware " Frederic Weisbecker
2018-11-20 14:24   ` Peter Zijlstra
2018-11-20 22:31     ` Frederic Weisbecker
2018-11-14  2:46 ` [PATCH 22/25] cpufreq: " Frederic Weisbecker
2018-11-14  2:46 ` [PATCH 23/25] leds: Use vtime aware kcpustat accessors Frederic Weisbecker
2018-11-14  2:46 ` [PATCH 24/25] rackmeter: " Frederic Weisbecker
2018-11-14  2:46 ` [PATCH 25/25] sched/vtime: Clarify vtime_task_switch() argument layout Frederic Weisbecker

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