diff options
author | Brian Haley <brian.haley@hp.com> | 2006-09-23 01:15:41 +0400 |
---|---|---|
committer | David S. Miller <davem@sunset.davemloft.net> | 2006-09-23 01:55:03 +0400 |
commit | ab32ea5d8a760e7dd4339634e95d7be24ee5b842 (patch) | |
tree | 8460a66c529fe03f926848326d9b6aa874e19514 /net/ipv4 | |
parent | 56fc85ac961e2c20dcb5ef07e2628b3f93de2e49 (diff) | |
download | linux-ab32ea5d8a760e7dd4339634e95d7be24ee5b842.tar.xz |
[NET/IPV4/IPV6]: Change some sysctl variables to __read_mostly
Change net/core, ipv4 and ipv6 sysctl variables to __read_mostly.
Couldn't actually measure any performance increase while testing (.3%
I consider noise), but seems like the right thing to do.
Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r-- | net/ipv4/af_inet.c | 4 | ||||
-rw-r--r-- | net/ipv4/icmp.c | 12 | ||||
-rw-r--r-- | net/ipv4/igmp.c | 4 | ||||
-rw-r--r-- | net/ipv4/ip_fragment.c | 10 | ||||
-rw-r--r-- | net/ipv4/ip_output.c | 2 | ||||
-rw-r--r-- | net/ipv4/tcp.c | 2 | ||||
-rw-r--r-- | net/ipv4/tcp_input.c | 36 | ||||
-rw-r--r-- | net/ipv4/tcp_ipv4.c | 4 | ||||
-rw-r--r-- | net/ipv4/tcp_minisocks.c | 4 | ||||
-rw-r--r-- | net/ipv4/tcp_output.c | 12 | ||||
-rw-r--r-- | net/ipv4/tcp_timer.c | 16 |
11 files changed, 53 insertions, 53 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 36c38bffb474..f2e8927f4596 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -391,7 +391,7 @@ int inet_release(struct socket *sock) } /* It is off by default, see below. */ -int sysctl_ip_nonlocal_bind; +int sysctl_ip_nonlocal_bind __read_mostly; int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) { @@ -987,7 +987,7 @@ void inet_unregister_protosw(struct inet_protosw *p) * Shall we try to damage output packets if routing dev changes? */ -int sysctl_ip_dynaddr; +int sysctl_ip_dynaddr __read_mostly; static int inet_sk_reselect_saddr(struct sock *sk) { diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c index 6d223e5c6741..c2ad07e48ab4 100644 --- a/net/ipv4/icmp.c +++ b/net/ipv4/icmp.c @@ -187,11 +187,11 @@ struct icmp_err icmp_err_convert[] = { }; /* Control parameters for ECHO replies. */ -int sysctl_icmp_echo_ignore_all; -int sysctl_icmp_echo_ignore_broadcasts = 1; +int sysctl_icmp_echo_ignore_all __read_mostly; +int sysctl_icmp_echo_ignore_broadcasts __read_mostly = 1; /* Control parameter - ignore bogus broadcast responses? */ -int sysctl_icmp_ignore_bogus_error_responses = 1; +int sysctl_icmp_ignore_bogus_error_responses __read_mostly = 1; /* * Configurable global rate limit. @@ -205,9 +205,9 @@ int sysctl_icmp_ignore_bogus_error_responses = 1; * time exceeded (11), parameter problem (12) */ -int sysctl_icmp_ratelimit = 1 * HZ; -int sysctl_icmp_ratemask = 0x1818; -int sysctl_icmp_errors_use_inbound_ifaddr; +int sysctl_icmp_ratelimit __read_mostly = 1 * HZ; +int sysctl_icmp_ratemask __read_mostly = 0x1818; +int sysctl_icmp_errors_use_inbound_ifaddr __read_mostly; /* * ICMP control array. This specifies what to do with each ICMP. diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index 7003e763d970..58be8227b0cb 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -1397,8 +1397,8 @@ static struct in_device * ip_mc_find_dev(struct ip_mreqn *imr) /* * Join a socket to a group */ -int sysctl_igmp_max_memberships = IP_MAX_MEMBERSHIPS; -int sysctl_igmp_max_msf = IP_MAX_MSF; +int sysctl_igmp_max_memberships __read_mostly = IP_MAX_MEMBERSHIPS; +int sysctl_igmp_max_msf __read_mostly = IP_MAX_MSF; static int ip_mc_del1_src(struct ip_mc_list *pmc, int sfmode, diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c index 8d7f107c2eef..165d72859ddf 100644 --- a/net/ipv4/ip_fragment.c +++ b/net/ipv4/ip_fragment.c @@ -54,15 +54,15 @@ * even the most extreme cases without allowing an attacker to measurably * harm machine performance. */ -int sysctl_ipfrag_high_thresh = 256*1024; -int sysctl_ipfrag_low_thresh = 192*1024; +int sysctl_ipfrag_high_thresh __read_mostly = 256*1024; +int sysctl_ipfrag_low_thresh __read_mostly = 192*1024; -int sysctl_ipfrag_max_dist = 64; +int sysctl_ipfrag_max_dist __read_mostly = 64; /* Important NOTE! Fragment queue must be destroyed before MSL expires. * RFC791 is wrong proposing to prolongate timer each fragment arrival by TTL. */ -int sysctl_ipfrag_time = IP_FRAG_TIME; +int sysctl_ipfrag_time __read_mostly = IP_FRAG_TIME; struct ipfrag_skb_cb { @@ -130,7 +130,7 @@ static unsigned int ipqhashfn(u16 id, u32 saddr, u32 daddr, u8 prot) } static struct timer_list ipfrag_secret_timer; -int sysctl_ipfrag_secret_interval = 10 * 60 * HZ; +int sysctl_ipfrag_secret_interval __read_mostly = 10 * 60 * HZ; static void ipfrag_secret_rebuild(unsigned long dummy) { diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index 1b9b6742ef77..81b2795a4c20 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -83,7 +83,7 @@ #include <linux/netlink.h> #include <linux/tcp.h> -int sysctl_ip_default_ttl = IPDEFTTL; +int sysctl_ip_default_ttl __read_mostly = IPDEFTTL; /* Generate a checksum for an outgoing IP datagram. */ __inline__ void ip_send_check(struct iphdr *iph) diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index b0124e69ab38..e570db4d33c8 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -268,7 +268,7 @@ #include <asm/uaccess.h> #include <asm/ioctls.h> -int sysctl_tcp_fin_timeout = TCP_FIN_TIMEOUT; +int sysctl_tcp_fin_timeout __read_mostly = TCP_FIN_TIMEOUT; DEFINE_SNMP_STAT(struct tcp_mib, tcp_statistics) __read_mostly; diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 159fa3f1ba67..caf3c41dcc8c 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -72,24 +72,24 @@ #include <asm/unaligned.h> #include <net/netdma.h> -int sysctl_tcp_timestamps = 1; -int sysctl_tcp_window_scaling = 1; -int sysctl_tcp_sack = 1; -int sysctl_tcp_fack = 1; -int sysctl_tcp_reordering = TCP_FASTRETRANS_THRESH; -int sysctl_tcp_ecn; -int sysctl_tcp_dsack = 1; -int sysctl_tcp_app_win = 31; -int sysctl_tcp_adv_win_scale = 2; - -int sysctl_tcp_stdurg; -int sysctl_tcp_rfc1337; -int sysctl_tcp_max_orphans = NR_FILE; -int sysctl_tcp_frto; -int sysctl_tcp_nometrics_save; - -int sysctl_tcp_moderate_rcvbuf = 1; -int sysctl_tcp_abc; +int sysctl_tcp_timestamps __read_mostly = 1; +int sysctl_tcp_window_scaling __read_mostly = 1; +int sysctl_tcp_sack __read_mostly = 1; +int sysctl_tcp_fack __read_mostly = 1; +int sysctl_tcp_reordering __read_mostly = TCP_FASTRETRANS_THRESH; +int sysctl_tcp_ecn __read_mostly; +int sysctl_tcp_dsack __read_mostly = 1; +int sysctl_tcp_app_win __read_mostly = 31; +int sysctl_tcp_adv_win_scale __read_mostly = 2; + +int sysctl_tcp_stdurg __read_mostly; +int sysctl_tcp_rfc1337 __read_mostly; +int sysctl_tcp_max_orphans __read_mostly = NR_FILE; +int sysctl_tcp_frto __read_mostly; +int sysctl_tcp_nometrics_save __read_mostly; + +int sysctl_tcp_moderate_rcvbuf __read_mostly = 1; +int sysctl_tcp_abc __read_mostly; #define FLAG_DATA 0x01 /* Incoming frame contained data. */ #define FLAG_WIN_UPDATE 0x02 /* Incoming ACK was a window update. */ diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 2973dee0a489..23b46e36b147 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -78,8 +78,8 @@ #include <linux/proc_fs.h> #include <linux/seq_file.h> -int sysctl_tcp_tw_reuse; -int sysctl_tcp_low_latency; +int sysctl_tcp_tw_reuse __read_mostly; +int sysctl_tcp_low_latency __read_mostly; /* Check TCP sequence numbers in ICMP packets. */ #define ICMP_MIN_LENGTH 8 diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c index 624e2b2c7f53..0163d9826907 100644 --- a/net/ipv4/tcp_minisocks.c +++ b/net/ipv4/tcp_minisocks.c @@ -34,8 +34,8 @@ #define SYNC_INIT 1 #endif -int sysctl_tcp_syncookies = SYNC_INIT; -int sysctl_tcp_abort_on_overflow; +int sysctl_tcp_syncookies __read_mostly = SYNC_INIT; +int sysctl_tcp_abort_on_overflow __read_mostly; struct inet_timewait_death_row tcp_death_row = { .sysctl_max_tw_buckets = NR_FILE * 2, diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 9252a50c4b49..061edfae0c29 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -43,24 +43,24 @@ #include <linux/smp_lock.h> /* People can turn this off for buggy TCP's found in printers etc. */ -int sysctl_tcp_retrans_collapse = 1; +int sysctl_tcp_retrans_collapse __read_mostly = 1; /* People can turn this on to work with those rare, broken TCPs that * interpret the window field as a signed quantity. */ -int sysctl_tcp_workaround_signed_windows = 0; +int sysctl_tcp_workaround_signed_windows __read_mostly = 0; /* This limits the percentage of the congestion window which we * will allow a single TSO frame to consume. Building TSO frames * which are too large can cause TCP streams to be bursty. */ -int sysctl_tcp_tso_win_divisor = 3; +int sysctl_tcp_tso_win_divisor __read_mostly = 3; -int sysctl_tcp_mtu_probing = 0; -int sysctl_tcp_base_mss = 512; +int sysctl_tcp_mtu_probing __read_mostly = 0; +int sysctl_tcp_base_mss __read_mostly = 512; /* By default, RFC2861 behavior. */ -int sysctl_tcp_slow_start_after_idle = 1; +int sysctl_tcp_slow_start_after_idle __read_mostly = 1; static void update_send_head(struct sock *sk, struct tcp_sock *tp, struct sk_buff *skb) diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c index 7c1bde3cd6cb..fb09ade5897b 100644 --- a/net/ipv4/tcp_timer.c +++ b/net/ipv4/tcp_timer.c @@ -23,14 +23,14 @@ #include <linux/module.h> #include <net/tcp.h> -int sysctl_tcp_syn_retries = TCP_SYN_RETRIES; -int sysctl_tcp_synack_retries = TCP_SYNACK_RETRIES; -int sysctl_tcp_keepalive_time = TCP_KEEPALIVE_TIME; -int sysctl_tcp_keepalive_probes = TCP_KEEPALIVE_PROBES; -int sysctl_tcp_keepalive_intvl = TCP_KEEPALIVE_INTVL; -int sysctl_tcp_retries1 = TCP_RETR1; -int sysctl_tcp_retries2 = TCP_RETR2; -int sysctl_tcp_orphan_retries; +int sysctl_tcp_syn_retries __read_mostly = TCP_SYN_RETRIES; +int sysctl_tcp_synack_retries __read_mostly = TCP_SYNACK_RETRIES; +int sysctl_tcp_keepalive_time __read_mostly = TCP_KEEPALIVE_TIME; +int sysctl_tcp_keepalive_probes __read_mostly = TCP_KEEPALIVE_PROBES; +int sysctl_tcp_keepalive_intvl __read_mostly = TCP_KEEPALIVE_INTVL; +int sysctl_tcp_retries1 __read_mostly = TCP_RETR1; +int sysctl_tcp_retries2 __read_mostly = TCP_RETR2; +int sysctl_tcp_orphan_retries __read_mostly; static void tcp_write_timer(unsigned long); static void tcp_delack_timer(unsigned long); |