Commit 7197688b authored by Frederic Weisbecker's avatar Frederic Weisbecker Committed by Thomas Gleixner
Browse files

sched/cputime: Remove symbol exports from IRQ time accounting 



account_irq_enter_time() and account_irq_exit_time() are not called
from modules. EXPORT_SYMBOL_GPL() can be safely removed from the IRQ
cputime accounting functions called from there.

Signed-off-by: default avatarFrederic Weisbecker <frederic@kernel.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201202115732.27827-2-frederic@kernel.org
parent 4615fbc3

arch/s390/kernel/vtime.c

+5 −5
Original line number Diff line number Diff line
@@ -226,7 +226,7 @@ void vtime_flush(struct task_struct *tsk) 
 * Update process times based on virtual cpu times stored by entry.S

 * to the lowcore fields user_timer, system_timer & steal_clock.

 */

void vtime_account_irq_enter(struct task_struct *tsk)

void vtime_account_kernel(struct task_struct *tsk)

{

	u64 timer;
@@ -245,12 +245,12 @@ void vtime_account_irq_enter(struct task_struct *tsk) 


	virt_timer_forward(timer);

}

EXPORT_SYMBOL_GPL(vtime_account_irq_enter);



void vtime_account_kernel(struct task_struct *tsk)

__attribute__((alias("vtime_account_irq_enter")));

EXPORT_SYMBOL_GPL(vtime_account_kernel);



void vtime_account_irq_enter(struct task_struct *tsk)

__attribute__((alias("vtime_account_kernel")));





/*

 * Sorted add to a list. List is linear searched until first bigger

 * element is found.

kernel/sched/cputime.c

+0 −2
Original line number Diff line number Diff line
@@ -71,7 +71,6 @@ void irqtime_account_irq(struct task_struct *curr) 
	else if (in_serving_softirq() && curr != this_cpu_ksoftirqd())

		irqtime_account_delta(irqtime, delta, CPUTIME_SOFTIRQ);

}

EXPORT_SYMBOL_GPL(irqtime_account_irq);



static u64 irqtime_tick_accounted(u64 maxtime)

{
@@ -434,7 +433,6 @@ void vtime_account_irq_enter(struct task_struct *tsk) 
	else

		vtime_account_kernel(tsk);

}

EXPORT_SYMBOL_GPL(vtime_account_irq_enter);

#endif /* __ARCH_HAS_VTIME_ACCOUNT */



void cputime_adjust(struct task_cputime *curr, struct prev_cputime *prev,

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