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| author | Frederic Weisbecker | 2017-01-05 18:11:43 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2017-01-14 09:54:11 +0100 |
| commit | c31cc6a5187e8b09ccee34f81728a90f80e872e7 (patch) | |
| tree | 141b28194f4c518043ef42a30493fe9c3501fcd2 /kernel/sched/cputime.c | |
| parent | sched/cputime, ia64: Fix incorrect start cputime assignment on task switch (diff) | |
| download | kernel-qcow2-linux-c31cc6a5187e8b09ccee34f81728a90f80e872e7.tar.gz kernel-qcow2-linux-c31cc6a5187e8b09ccee34f81728a90f80e872e7.tar.xz kernel-qcow2-linux-c31cc6a5187e8b09ccee34f81728a90f80e872e7.zip | |
sched/cputime: Allow accounting system time using cpustat index
In order to prepare for CONFIG_VIRT_CPU_ACCOUNTING_NATIVE=y to delay
cputime accounting to the tick, let's provide APIs to account system
time to precise contexts: hardirq, softirq, pure system, ...
Inspired-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
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: Tony Luck <tony.luck@intel.com>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Link: http://lkml.kernel.org/r/1483636310-6557-4-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/cputime.c')
| -rw-r--r-- | kernel/sched/cputime.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index 7700a9cba335..aad42835938c 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -176,8 +176,8 @@ static void account_guest_time(struct task_struct *p, cputime_t cputime) * @cputime: the cpu time spent in kernel space since the last update * @index: pointer to cpustat field that has to be updated */ -static inline -void __account_system_time(struct task_struct *p, cputime_t cputime, int index) +void account_system_index_time(struct task_struct *p, + cputime_t cputime, enum cpu_usage_stat index) { /* Add system time to process. */ p->stime += cputime; @@ -213,7 +213,7 @@ void account_system_time(struct task_struct *p, int hardirq_offset, else index = CPUTIME_SYSTEM; - __account_system_time(p, cputime, index); + account_system_index_time(p, cputime, index); } /* @@ -400,7 +400,7 @@ 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_time(p, cputime, CPUTIME_SOFTIRQ); + account_system_index_time(p, cputime, CPUTIME_SOFTIRQ); } else if (user_tick) { account_user_time(p, cputime); } else if (p == rq->idle) { @@ -408,7 +408,7 @@ 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_time(p, cputime, CPUTIME_SYSTEM); + account_system_index_time(p, cputime, CPUTIME_SYSTEM); } } |