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[NET]: prot_inuse cleanups and optimizations

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1) Cleanups (all functions are prefixed by sock_prot_inuse)

sock_prot_inc_use(prot) -> sock_prot_inuse_add(prot,-1)
sock_prot_dec_use(prot) -> sock_prot_inuse_add(prot,-1)
sock_prot_inuse()       -> sock_prot_inuse_get()

New functions :

sock_prot_inuse_init() and sock_prot_inuse_free() to abstract pcounter use.

2) if CONFIG_PROC_FS=n, we can zap 'inuse' member from "struct proto",
since nobody wants to read the inuse value.

This saves 1372 bytes on i386/SMP and some cpu cycles.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2008-01-03 20:46:48 -08:00
committed by David S. Miller
parent 571e768202
commit 65f7651788
12 changed files with 57 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files
net/ipv4/proc.c
+5 -4
View File
@@ -53,13 +53,14 @@ static int sockstat_seq_show(struct seq_file *seq, void *v)
{
socket_seq_show(seq);
seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %d\n",
sock_prot_inuse(&tcp_prot), atomic_read(&tcp_orphan_count),
sock_prot_inuse_get(&tcp_prot),
atomic_read(&tcp_orphan_count),
tcp_death_row.tw_count, atomic_read(&tcp_sockets_allocated),
atomic_read(&tcp_memory_allocated));
seq_printf(seq, "UDP: inuse %d mem %d\n", sock_prot_inuse(&udp_prot),
seq_printf(seq, "UDP: inuse %d mem %d\n", sock_prot_inuse_get(&udp_prot),
atomic_read(&udp_memory_allocated));
seq_printf(seq, "UDPLITE: inuse %d\n", sock_prot_inuse(&udplite_prot));
seq_printf(seq, "RAW: inuse %d\n", sock_prot_inuse(&raw_prot));
seq_printf(seq, "UDPLITE: inuse %d\n", sock_prot_inuse_get(&udplite_prot));
seq_printf(seq, "RAW: inuse %d\n", sock_prot_inuse_get(&raw_prot));
seq_printf(seq, "FRAG: inuse %d memory %d\n",
ip_frag_nqueues(), ip_frag_mem());
return 0;