Messages in this thread Patch in this message | | | Date | Sun, 04 May 2008 21:57:14 +0900 | From | KOSAKI Motohiro <> | Subject | [-mm][PATCH 2/5] introduce get_vm_event() |
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introduce get_vm_event() new function for easy use vm statics.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
--- include/linux/vmstat.h | 7 ++++++- mm/vmstat.c | 14 ++++++++++++++ 2 files changed, 20 insertions(+), 1 deletion(-)
Index: b/include/linux/vmstat.h =================================================================== --- a/include/linux/vmstat.h 2008-05-02 23:40:39.000000000 +0900 +++ b/include/linux/vmstat.h 2008-05-03 00:23:17.000000000 +0900 @@ -92,6 +92,8 @@ static inline void vm_events_fold_cpu(in } #endif +unsigned long get_vm_event(enum vm_event_item event_type); + #else /* Disable counters */ @@ -113,7 +115,10 @@ static inline void all_vm_events(unsigne static inline void vm_events_fold_cpu(int cpu) { } - +static inline unsigned long get_vm_event(enum vm_event_item event_type) +{ + return 0; +} #endif /* CONFIG_VM_EVENT_COUNTERS */ #define __count_zone_vm_events(item, zone, delta) \ Index: b/mm/vmstat.c =================================================================== --- a/mm/vmstat.c 2008-05-02 23:40:39.000000000 +0900 +++ b/mm/vmstat.c 2008-05-02 23:43:28.000000000 +0900 @@ -46,6 +46,20 @@ void all_vm_events(unsigned long *ret) } EXPORT_SYMBOL_GPL(all_vm_events); +unsigned long get_vm_event(enum vm_event_item event_type) +{ + int cpu; + unsigned long ret = 0; + + for_each_cpu_mask(cpu, cpu_online_map) { + struct vm_event_state *this = &per_cpu(vm_event_states, cpu); + + ret += this->event[event_type]; + } + + return ret; +} + #ifdef CONFIG_HOTPLUG /* * Fold the foreign cpu events into our own.
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