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Subject[PATCH 22/25] irq: make irqs in kernel stat use per_cpu_dyn_array
Date
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
---
include/linux/kernel_stat.h | 4 ++++
kernel/sched.c | 5 ++++-
2 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index cf9f40a..fe1f7fe 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -28,7 +28,11 @@ struct cpu_usage_stat {

struct kernel_stat {
struct cpu_usage_stat cpustat;
+#ifdef CONFIG_HAVE_DYN_ARRAY
+ unsigned int *irqs;
+#else
unsigned int irqs[NR_IRQS];
+#endif
};

DECLARE_PER_CPU(struct kernel_stat, kstat);
diff --git a/kernel/sched.c b/kernel/sched.c
index 55cb4ce..21c0839 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4021,9 +4021,12 @@ static inline void idle_balance(int cpu, struct rq *rq)
#endif

DEFINE_PER_CPU(struct kernel_stat, kstat);
-
EXPORT_PER_CPU_SYMBOL(kstat);

+#ifdef CONFIG_HAVE_DYN_ARRAY
+DEFINE_PER_CPU_DYN_ARRAY_ADDR(per_cpu__kstat_irqs, per_cpu__kstat.irqs, sizeof(unsigned int), nr_irqs, sizeof(unsigned long), NULL);
+#endif
+
/*
* Return p->sum_exec_runtime plus any more ns on the sched_clock
* that have not yet been banked in case the task is currently running.
--
1.5.4.5


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