diff options
| author | Eric Dumazet <edumazet@google.com> | 2026-01-22 04:57:18 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-01-25 13:18:53 -0800 |
| commit | 87918dd4eafc0749a99cb763addc1c37fe7ebb6f (patch) | |
| tree | 81cafd2279ef409ed5a0fbf84fceec26954cdf90 /include | |
| parent | cbe41362be2c27e0237a94a404ae413cec9c2ad9 (diff) | |
net: inline net_is_devmem_iov()
1) Inline this small helper to reduce code size and decrease cpu costs.
2) Constify its argument.
3) Move it to include/net/netmem.h, as a prereq for the following patch.
$ scripts/bloat-o-meter -t vmlinux.2 vmlinux.3
add/remove: 0/2 grow/shrink: 0/4 up/down: 0/-158 (-158)
Function old new delta
validate_xmit_skb 866 857 -9
__pfx_net_is_devmem_iov 16 - -16
net_is_devmem_iov 22 - -22
get_netmem 152 130 -22
put_netmem 140 114 -26
tcp_recvmsg_locked 3860 3797 -63
Total: Before=22566015, After=22565857, chg -0.00%
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260122045720.1221017-4-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/netmem.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/net/netmem.h b/include/net/netmem.h index 9e10f4ac50c3..2113a197abb3 100644 --- a/include/net/netmem.h +++ b/include/net/netmem.h @@ -389,6 +389,18 @@ static inline unsigned long netmem_get_dma_addr(netmem_ref netmem) return netmem_to_nmdesc(netmem)->dma_addr; } +#if defined(CONFIG_NET_DEVMEM) +static inline bool net_is_devmem_iov(const struct net_iov *niov) +{ + return niov->type == NET_IOV_DMABUF; +} +#else +static inline bool net_is_devmem_iov(const struct net_iov *niov) +{ + return false; +} +#endif + void get_netmem(netmem_ref netmem); void put_netmem(netmem_ref netmem); |