Merge tag 'sched-cputime-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks into sched/core

Pull more cputime cleanups from Frederic Weisbecker:

 * Get rid of underscores polluting the vtime namespace

 * Consolidate context switch and tick handling

 * Improve debuggability by detecting irq unsafe callers

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 19 insertions, 12 deletions

diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
index b7f731768625..293b202fcf79 100644
--- a/kernel/sched/cputime.c
+++ b/kernel/sched/cputime.c
@@ -461,20 +461,33 @@ void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime
         *st = cputime.stime;
 }
 
-void vtime_account_system(struct task_struct *tsk)
+void vtime_account_system_irqsafe(struct task_struct *tsk)
 {
         unsigned long flags;
 
         local_irq_save(flags);
-        __vtime_account_system(tsk);
+        vtime_account_system(tsk);
         local_irq_restore(flags);
 }
-EXPORT_SYMBOL_GPL(vtime_account_system);
+EXPORT_SYMBOL_GPL(vtime_account_system_irqsafe);
+
+#ifndef __ARCH_HAS_VTIME_TASK_SWITCH
+void vtime_task_switch(struct task_struct *prev)
+{
+        if (is_idle_task(prev))
+                vtime_account_idle(prev);
+        else
+                vtime_account_system(prev);
+
+        vtime_account_user(prev);
+        arch_vtime_task_switch(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_system() and __vtime_account_idle(). Archs that
+ * vtime_account_system() 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().
@@ -482,16 +495,10 @@ EXPORT_SYMBOL_GPL(vtime_account_system);
 #ifndef __ARCH_HAS_VTIME_ACCOUNT
 void vtime_account(struct task_struct *tsk)
 {
-        unsigned long flags;
-
-        local_irq_save(flags);
-
         if (in_interrupt() || !is_idle_task(tsk))
-                __vtime_account_system(tsk);
+                vtime_account_system(tsk);
         else
-                __vtime_account_idle(tsk);
-
-        local_irq_restore(flags);
+                vtime_account_idle(tsk);
 }
 EXPORT_SYMBOL_GPL(vtime_account);
 #endif /* __ARCH_HAS_VTIME_ACCOUNT */