diff options
| author | zhenwei pi <pizhenwei@bytedance.com> | 2024-04-23 11:41:06 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-07-09 08:42:39 -0400 |
| commit | fdba68d2adf8d9ae680e23e8b8ba79330baa45bc (patch) | |
| tree | 907fe9d2c66869d441067e7200a2c1e19eea2a7c /drivers/virtio | |
| parent | 8b6c724cdab85d8923dd8c474a5a9464228379c5 (diff) | |
virtio_balloon: separate vm events into a function
All the VM events related statistics have dependence on
'CONFIG_VM_EVENT_COUNTERS', separate these events into a function to
make code clean. Then we can remove 'CONFIG_VM_EVENT_COUNTERS' from
'update_balloon_stats'.
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Message-Id: <20240423034109.1552866-2-pizhenwei@bytedance.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Diffstat (limited to 'drivers/virtio')
| -rw-r--r-- | drivers/virtio/virtio_balloon.c | 43 |
1 files changed, 29 insertions, 14 deletions
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index c0a63638f95e..9a61febbd2f7 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -349,34 +349,49 @@ static inline void update_stat(struct virtio_balloon *vb, int idx, #define pages_to_bytes(x) ((u64)(x) << PAGE_SHIFT) -static unsigned int update_balloon_stats(struct virtio_balloon *vb) +#ifdef CONFIG_VM_EVENT_COUNTERS +/* Return the number of entries filled by vm events */ +static inline unsigned int update_balloon_vm_stats(struct virtio_balloon *vb) { unsigned long events[NR_VM_EVENT_ITEMS]; - struct sysinfo i; unsigned int idx = 0; - long available; - unsigned long caches; all_vm_events(events); - si_meminfo(&i); - - available = si_mem_available(); - caches = global_node_page_state(NR_FILE_PAGES); - -#ifdef CONFIG_VM_EVENT_COUNTERS update_stat(vb, idx++, VIRTIO_BALLOON_S_SWAP_IN, - pages_to_bytes(events[PSWPIN])); + pages_to_bytes(events[PSWPIN])); update_stat(vb, idx++, VIRTIO_BALLOON_S_SWAP_OUT, - pages_to_bytes(events[PSWPOUT])); + pages_to_bytes(events[PSWPOUT])); update_stat(vb, idx++, VIRTIO_BALLOON_S_MAJFLT, events[PGMAJFAULT]); update_stat(vb, idx++, VIRTIO_BALLOON_S_MINFLT, events[PGFAULT]); + #ifdef CONFIG_HUGETLB_PAGE update_stat(vb, idx++, VIRTIO_BALLOON_S_HTLB_PGALLOC, events[HTLB_BUDDY_PGALLOC]); update_stat(vb, idx++, VIRTIO_BALLOON_S_HTLB_PGFAIL, events[HTLB_BUDDY_PGALLOC_FAIL]); -#endif -#endif +#endif /* CONFIG_HUGETLB_PAGE */ + + return idx; +} +#else /* CONFIG_VM_EVENT_COUNTERS */ +static inline unsigned int update_balloon_vm_stats(struct virtio_balloon *vb) +{ + return 0; +} +#endif /* CONFIG_VM_EVENT_COUNTERS */ + +static unsigned int update_balloon_stats(struct virtio_balloon *vb) +{ + struct sysinfo i; + unsigned int idx; + long available; + unsigned long caches; + + idx = update_balloon_vm_stats(vb); + + si_meminfo(&i); + available = si_mem_available(); + caches = global_node_page_state(NR_FILE_PAGES); update_stat(vb, idx++, VIRTIO_BALLOON_S_MEMFREE, pages_to_bytes(i.freeram)); update_stat(vb, idx++, VIRTIO_BALLOON_S_MEMTOT, |