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From a805322d0dcd5d64dc33a4de70545c5025b5262f Mon Sep 17 00:00:00 2001
From: Frederic Weisbecker <frederic@kernel.org>
Date: Wed, 2 Dec 2020 12:57:28 +0100
Subject: [PATCH 128/296] sched/cputime: Remove symbol exports from IRQ time
accounting
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.35-rt39.tar.xz
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: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201202115732.27827-2-frederic@kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
arch/s390/kernel/vtime.c | 10 +++++-----
kernel/sched/cputime.c | 2 --
2 files changed, 5 insertions(+), 7 deletions(-)
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 579ec3a8c816..710135905deb 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -227,7 +227,7 @@ 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;
@@ -246,12 +246,12 @@ 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.
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
index 5a55d2300452..61ce9f9bf0a3 100644
--- a/kernel/sched/cputime.c
+++ b/kernel/sched/cputime.c
@@ -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,
--
2.30.2
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