| Message ID | 20210111182801.12609-5-alobakin@pm.me (mailing list archive) |
|---|---|
| State | Changes Requested |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | skbuff: introduce skbuff_heads bulking and reusing | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | success | Link |
| netdev/fixes_present | success | Link |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Clearly marked for net-next |
| netdev/subject_prefix | success | Link |
| netdev/cc_maintainers | success | CCed 11 of 11 maintainers |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 1 this patch: 1 |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 11 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 1 this patch: 1 |
| netdev/header_inline | success | Link |
| netdev/stable | success | Stable not CCed |
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 57a7307689f3..ba0d5611635e 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -904,6 +904,11 @@ static inline void _kfree_skb_defer(struct sk_buff *skb) /* drop skb->head and call any destructors for packet */ skb_release_all(skb); + if (nc->skb_count < NAPI_SKB_CACHE_SIZE) { + nc->skb_cache[nc->skb_count++] = skb; + return; + } + /* record skb to CPU local list */ nc->flush_skb_cache[nc->flush_skb_count++] = skb;
Instead of unconditional queueing of ready-to-consume skbuff_heads to flush_skb_cache, feed skb_cache with them instead if it's not full already. This greatly reduces the frequency of kmem_cache_alloc_bulk() calls. Signed-off-by: Alexander Lobakin <alobakin@pm.me> --- net/core/skbuff.c | 5 +++++ 1 file changed, 5 insertions(+)