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sched/vtime: Consolidate IRQ time accounting

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The 3 architectures implementing CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
all have their own version of irq time accounting that dispatch the
cputime to the appropriate index: hardirq, softirq, system, idle,
guest... from an all-in-one function.

Instead of having these ad-hoc versions, move the cputime destination
dispatch decision to the core code and leave only the actual per-index
cputime accounting to the architecture.

Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201202115732.27827-4-frederic@kernel.org
This commit is contained in:
Frederic Weisbecker 2020-12-02 12:57:30 +01:00 • committed by Thomas Gleixner
parent 2b91ec9f55
commit 8a6a5920d3
5 changed files with 102 additions and 48 deletions
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13
kernel/sched/cputime.c
View file

@ -417,13 +417,18 @@ void vtime_task_switch(struct task_struct *prev)
}
# endif
void vtime_account_irq_enter(struct task_struct *tsk)
void vtime_account_irq(struct task_struct *tsk)
{
if (!IS_ENABLED(CONFIG_HAVE_VIRT_CPU_ACCOUNTING_IDLE) &&
!in_interrupt() && is_idle_task(tsk))
if (hardirq_count()) {
vtime_account_hardirq(tsk);
} else if (in_serving_softirq()) {
vtime_account_softirq(tsk);
} else if (!IS_ENABLED(CONFIG_HAVE_VIRT_CPU_ACCOUNTING_IDLE) &&
is_idle_task(tsk)) {
vtime_account_idle(tsk);
else
} else {
vtime_account_kernel(tsk);
}
}
void cputime_adjust(struct task_cputime *curr, struct prev_cputime *prev,