ipvs: run_estimation should control the kthread tasks
Change the run_estimation flag to start/stop the kthread tasks. Signed-off-by: Julian Anastasov <ja@ssi.bg> Cc: yunhong-cgl jiang <xintian1976@gmail.com> Cc: "dust.li" <dust.li@linux.alibaba.com> Reviewed-by: Jiri Wiesner <jwiesner@suse.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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@ -324,8 +324,8 @@ run_estimation - BOOLEAN
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0 - disabled
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0 - disabled
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not 0 - enabled (default)
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not 0 - enabled (default)
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If disabled, the estimation will be stop, and you can't see
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If disabled, the estimation will be suspended and kthread tasks
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any update on speed estimation data.
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stopped.
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You can always re-enable estimation by setting this value to 1.
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You can always re-enable estimation by setting this value to 1.
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But be careful, the first estimation after re-enable is not
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But be careful, the first estimation after re-enable is not
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@ -1605,8 +1605,10 @@ void ip_vs_est_kthread_stop(struct ip_vs_est_kt_data *kd);
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static inline void ip_vs_est_stopped_recalc(struct netns_ipvs *ipvs)
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static inline void ip_vs_est_stopped_recalc(struct netns_ipvs *ipvs)
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{
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{
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#ifdef CONFIG_SYSCTL
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#ifdef CONFIG_SYSCTL
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ipvs->est_stopped = ipvs->est_cpulist_valid &&
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/* Stop tasks while cpulist is empty or if disabled with flag */
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cpumask_empty(sysctl_est_cpulist(ipvs));
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ipvs->est_stopped = !sysctl_run_estimation(ipvs) ||
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(ipvs->est_cpulist_valid &&
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cpumask_empty(sysctl_est_cpulist(ipvs)));
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#endif
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#endif
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}
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}
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@ -2056,6 +2056,32 @@ static int ipvs_proc_est_nice(struct ctl_table *table, int write,
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return ret;
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return ret;
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}
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}
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static int ipvs_proc_run_estimation(struct ctl_table *table, int write,
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void *buffer, size_t *lenp, loff_t *ppos)
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{
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struct netns_ipvs *ipvs = table->extra2;
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int *valp = table->data;
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int val = *valp;
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int ret;
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struct ctl_table tmp_table = {
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.data = &val,
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.maxlen = sizeof(int),
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.mode = table->mode,
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};
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ret = proc_dointvec(&tmp_table, write, buffer, lenp, ppos);
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if (write && ret >= 0) {
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mutex_lock(&ipvs->est_mutex);
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if (*valp != val) {
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*valp = val;
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ip_vs_est_reload_start(ipvs);
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}
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mutex_unlock(&ipvs->est_mutex);
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}
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return ret;
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}
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/*
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/*
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* IPVS sysctl table (under the /proc/sys/net/ipv4/vs/)
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* IPVS sysctl table (under the /proc/sys/net/ipv4/vs/)
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* Do not change order or insert new entries without
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* Do not change order or insert new entries without
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@ -2230,7 +2256,7 @@ static struct ctl_table vs_vars[] = {
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.procname = "run_estimation",
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.procname = "run_estimation",
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.maxlen = sizeof(int),
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.maxlen = sizeof(int),
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.mode = 0644,
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.mode = 0644,
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.proc_handler = proc_dointvec,
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.proc_handler = ipvs_proc_run_estimation,
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},
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},
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{
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{
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.procname = "est_cpulist",
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.procname = "est_cpulist",
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@ -4323,6 +4349,7 @@ static int __net_init ip_vs_control_net_init_sysctl(struct netns_ipvs *ipvs)
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tbl[idx++].data = &ipvs->sysctl_schedule_icmp;
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tbl[idx++].data = &ipvs->sysctl_schedule_icmp;
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tbl[idx++].data = &ipvs->sysctl_ignore_tunneled;
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tbl[idx++].data = &ipvs->sysctl_ignore_tunneled;
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ipvs->sysctl_run_estimation = 1;
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ipvs->sysctl_run_estimation = 1;
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tbl[idx].extra2 = ipvs;
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tbl[idx++].data = &ipvs->sysctl_run_estimation;
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tbl[idx++].data = &ipvs->sysctl_run_estimation;
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ipvs->est_cpulist_valid = 0;
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ipvs->est_cpulist_valid = 0;
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@ -212,7 +212,7 @@ static int ip_vs_estimation_kthread(void *data)
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kd->est_timer = now;
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kd->est_timer = now;
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}
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}
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if (sysctl_run_estimation(ipvs) && kd->tick_len[row])
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if (kd->tick_len[row])
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ip_vs_tick_estimation(kd, row);
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ip_vs_tick_estimation(kd, row);
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row++;
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row++;
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