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| author | Jia He <hejianet@gmail.com> | 2016-09-30 11:29:01 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-09-30 01:50:44 -0400 |
| commit | 7d64a94be2f9fadb1dd95742650f1fdbac69f25b (patch) | |
| tree | b3068f0c5f31adc9e33b814fad056400e74e98df /net/sctp/proc.c | |
| parent | 4a4857b1c81ef39a9dc719af6b498cd39d1c1eb0 (diff) | |
| download | linux-7d64a94be2f9fadb1dd95742650f1fdbac69f25b.tar.gz linux-7d64a94be2f9fadb1dd95742650f1fdbac69f25b.tar.bz2 linux-7d64a94be2f9fadb1dd95742650f1fdbac69f25b.zip | |
proc: Reduce cache miss in sctp_snmp_seq_show
This is to use the generic interfaces snmp_get_cpu_field{,64}_batch to
aggregate the data by going through all the items of each cpu sequentially.
Signed-off-by: Jia He <hejianet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/proc.c')
| -rw-r--r-- | net/sctp/proc.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/net/sctp/proc.c b/net/sctp/proc.c index ef8ba77a5bea..09e16c2b5c17 100644 --- a/net/sctp/proc.c +++ b/net/sctp/proc.c @@ -73,13 +73,17 @@ static const struct snmp_mib sctp_snmp_list[] = { /* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */ static int sctp_snmp_seq_show(struct seq_file *seq, void *v) { + unsigned long buff[SCTP_MIB_MAX]; struct net *net = seq->private; int i; + memset(buff, 0, sizeof(unsigned long) * SCTP_MIB_MAX); + + snmp_get_cpu_field_batch(buff, sctp_snmp_list, + net->sctp.sctp_statistics); for (i = 0; sctp_snmp_list[i].name != NULL; i++) seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name, - snmp_fold_field(net->sctp.sctp_statistics, - sctp_snmp_list[i].entry)); + buff[i]); return 0; } |