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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2016-07-13 16:50:03 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-07-14 10:42:35 +0200 |
| commit | 0cfdf9a198b0d4f5ad6c87d894db7830b796b2cc (patch) | |
| tree | c679503aab5fdfa6776687d6a9e9d067faffef85 /kernel/sched | |
| parent | b58c35840521bb02b150e1d0d34ca9197f8b7145 (diff) | |
| download | linux-0-day-0cfdf9a198b0d4f5ad6c87d894db7830b796b2cc.tar.gz linux-0-day-0cfdf9a198b0d4f5ad6c87d894db7830b796b2cc.tar.xz | |
sched/cputime: Clean up the old vtime gen irqtime accounting completely
Vtime generic irqtime accounting has been removed but there are a few
remnants to clean up:
* The vtime_accounting_cpu_enabled() check in irq entry was only used
by CONFIG_VIRT_CPU_ACCOUNTING_GEN. We can safely remove it.
* Without the vtime_accounting_cpu_enabled(), we no longer need to
have a vtime_common_account_irq_enter() indirect function.
* Move vtime_account_irq_enter() implementation under
CONFIG_VIRT_CPU_ACCOUNTING_NATIVE which is the last user.
* The vtime_account_user() call was only used on irq entry for
CONFIG_VIRT_CPU_ACCOUNTING_GEN. We can remove that too.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Radim Krcmar <rkrcmar@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Link: http://lkml.kernel.org/r/1468421405-20056-4-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/cputime.c | 33 |
1 files changed, 10 insertions, 23 deletions
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index ca7e33cb09674..16a873c203b12 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -431,6 +431,10 @@ void vtime_common_task_switch(struct task_struct *prev) } #endif +#endif /* CONFIG_VIRT_CPU_ACCOUNTING */ + + +#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE /* * Archs that account the whole time spent in the idle task * (outside irq) as idle time can rely on this and just implement @@ -440,33 +444,16 @@ void vtime_common_task_switch(struct task_struct *prev) * vtime_account(). */ #ifndef __ARCH_HAS_VTIME_ACCOUNT -void vtime_common_account_irq_enter(struct task_struct *tsk) +void vtime_account_irq_enter(struct task_struct *tsk) { - if (!in_interrupt()) { - /* - * If we interrupted user, context_tracking_in_user() - * is 1 because the context tracking don't hook - * on irq entry/exit. This way we know if - * we need to flush user time on kernel entry. - */ - if (context_tracking_in_user()) { - vtime_account_user(tsk); - return; - } - - if (is_idle_task(tsk)) { - vtime_account_idle(tsk); - return; - } - } - vtime_account_system(tsk); + if (!in_interrupt() && is_idle_task(tsk)) + vtime_account_idle(tsk); + else + vtime_account_system(tsk); } -EXPORT_SYMBOL_GPL(vtime_common_account_irq_enter); +EXPORT_SYMBOL_GPL(vtime_account_irq_enter); #endif /* __ARCH_HAS_VTIME_ACCOUNT */ -#endif /* CONFIG_VIRT_CPU_ACCOUNTING */ - -#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE void task_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st) { *ut = p->utime; |