diff options
| author | Frederic Weisbecker <frederic@kernel.org> | 2020-12-02 12:57:29 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-12-02 20:20:04 +0100 |
| commit | 2b91ec9f551b56751cde48792f1c0a1130358844 (patch) | |
| tree | e43dcbee5218a9c9e72735b3000a95d04288d37b /kernel/sched | |
| parent | 7197688b2006357da75a014e0a76be89ca9c2d46 (diff) | |
| download | linux-2b91ec9f551b56751cde48792f1c0a1130358844.tar.bz2 | |
s390/vtime: Use the generic IRQ entry accounting
s390 has its own version of IRQ entry accounting because it doesn't
account the idle time the same way the other architectures do. Only
the actual idle sleep time is accounted as idle time, the rest of the
idle task execution is accounted as system time.
Make the generic IRQ entry accounting aware of architectures that have
their own way of accounting idle time and convert s390 to use it.
This prepares s390 to get involved in further consolidations of IRQ
time accounting.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201202115732.27827-3-frederic@kernel.org
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/cputime.c | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index 61ce9f9bf0a3..2783162542b1 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -417,23 +417,14 @@ void vtime_task_switch(struct task_struct *prev) } # endif -/* - * Archs that account the whole time spent in the idle task - * (outside irq) as idle time can rely on this and just implement - * vtime_account_kernel() and vtime_account_idle(). Archs that - * have other meaning of the idle time (s390 only includes the - * time spent by the CPU when it's in low power mode) must override - * vtime_account(). - */ -#ifndef __ARCH_HAS_VTIME_ACCOUNT void vtime_account_irq_enter(struct task_struct *tsk) { - if (!in_interrupt() && is_idle_task(tsk)) + if (!IS_ENABLED(CONFIG_HAVE_VIRT_CPU_ACCOUNTING_IDLE) && + !in_interrupt() && is_idle_task(tsk)) vtime_account_idle(tsk); else vtime_account_kernel(tsk); } -#endif /* __ARCH_HAS_VTIME_ACCOUNT */ void cputime_adjust(struct task_cputime *curr, struct prev_cputime *prev, u64 *ut, u64 *st) |