From: Alexey Dobriyan <adobriyan@gmail.com>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org
Subject: [PATCH] net: make struct napi_alloc_cache::skb_count unsigned int
Date: Sat, 19 Nov 2016 03:47:56 +0300 [thread overview]
Message-ID: <20161119004756.GC1200@avx2> (raw)
size_t is way too much for an integer not exceeding 64.
Space savings: 10 bytes!
add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-10 (-10)
function old new delta
napi_consume_skb 165 163 -2
__kfree_skb_flush 56 53 -3
__kfree_skb_defer 97 92 -5
Total: Before=154865639, After=154865629, chg -0.00%
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
net/core/skbuff.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -354,7 +354,7 @@ EXPORT_SYMBOL(build_skb);
struct napi_alloc_cache {
struct page_frag_cache page;
- size_t skb_count;
+ unsigned int skb_count;
void *skb_cache[NAPI_SKB_CACHE_SIZE];
};
next reply other threads:[~2016-11-18 22:48 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-19 0:47 Alexey Dobriyan [this message]
2016-11-20 3:11 ` [PATCH] net: make struct napi_alloc_cache::skb_count unsigned int David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20161119004756.GC1200@avx2 \
--to=adobriyan@gmail.com \
--cc=davem@davemloft.net \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).