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authorIngo Molnar <mingo@elte.hu>2008-12-17 14:10:57 +0100
committerIngo Molnar <mingo@elte.hu>2008-12-23 12:45:14 +0100
commitaa9c4c0f967fdb482ea95e8473ec3d201e6e0781 (patch)
tree8223d34630b7d3130825e8a2197e9bb51c34b7fa /include/linux/kernel_stat.h
parent7671581f1666ef4b54a1c1e598c51ac44c060a9b (diff)
perfcounters: fix task clock counter
Impact: fix per task clock counter precision Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/kernel_stat.h')
-rw-r--r--include/linux/kernel_stat.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index 4a145caeee07..1b2e3242497c 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -66,7 +66,15 @@ static inline unsigned int kstat_irqs(unsigned int irq)
return sum;
}
+
+/*
+ * Lock/unlock the current runqueue - to extract task statistics:
+ */
+extern void curr_rq_lock_irq_save(unsigned long *flags);
+extern void curr_rq_unlock_irq_restore(unsigned long *flags);
+extern unsigned long long __task_delta_exec(struct task_struct *tsk, int update);
extern unsigned long long task_delta_exec(struct task_struct *);
+
extern void account_user_time(struct task_struct *, cputime_t);
extern void account_user_time_scaled(struct task_struct *, cputime_t);
extern void account_system_time(struct task_struct *, int, cputime_t);