[PATCH 1/5] sched/cputime: Remove symbol exports from IRQ time accounting

[Frederic Weisbecker <frederic@kernel.org>]

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>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
---
 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 8df10d3c8f6c..f9f2a11958a5 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -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.
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,
-- 
2.25.1