cregit-Linux how code gets into the kernel

Release 4.15 kernel/taskstats.c

Directory: kernel
/*
 * taskstats.c - Export per-task statistics to userland
 *
 * Copyright (C) Shailabh Nagar, IBM Corp. 2006
 *           (C) Balbir Singh,   IBM Corp. 2006
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */

#include <linux/kernel.h>
#include <linux/taskstats_kern.h>
#include <linux/tsacct_kern.h>
#include <linux/delayacct.h>
#include <linux/cpumask.h>
#include <linux/percpu.h>
#include <linux/slab.h>
#include <linux/cgroupstats.h>
#include <linux/cgroup.h>
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/pid_namespace.h>
#include <net/genetlink.h>
#include <linux/atomic.h>
#include <linux/sched/cputime.h>

/*
 * Maximum length of a cpumask that can be specified in
 * the TASKSTATS_CMD_ATTR_REGISTER/DEREGISTER_CPUMASK attribute
 */

#define TASKSTATS_CPUMASK_MAXLEN	(100+6*NR_CPUS)

static DEFINE_PER_CPU(__u32, taskstats_seqnum);

static int family_registered;

struct kmem_cache *taskstats_cache;


static struct genl_family family;


static const struct nla_policy taskstats_cmd_get_policy[TASKSTATS_CMD_ATTR_MAX+1] = {
	[TASKSTATS_CMD_ATTR_PID]  = { .type = NLA_U32 },
	[TASKSTATS_CMD_ATTR_TGID] = { .type = NLA_U32 },
	[TASKSTATS_CMD_ATTR_REGISTER_CPUMASK] = { .type = NLA_STRING },
	[TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK] = { .type = NLA_STRING },};

/*
 * We have to use TASKSTATS_CMD_ATTR_MAX here, it is the maxattr in the family.
 * Make sure they are always aligned.
 */

static const struct nla_policy cgroupstats_cmd_get_policy[TASKSTATS_CMD_ATTR_MAX+1] = {
	[CGROUPSTATS_CMD_ATTR_FD] = { .type = NLA_U32 },
};


struct listener {
	
struct list_head list;
	
pid_t pid;
	
char valid;
};


struct listener_list {
	
struct rw_semaphore sem;
	
struct list_head list;
};
static DEFINE_PER_CPU(struct listener_list, listener_array);


enum actions {
	
REGISTER,
	
DEREGISTER,
	
CPU_DONT_CARE
};


static int prepare_reply(struct genl_info *info, u8 cmd, struct sk_buff **skbp, size_t size) { struct sk_buff *skb; void *reply; /* * If new attributes are added, please revisit this allocation */ skb = genlmsg_new(size, GFP_KERNEL); if (!skb) return -ENOMEM; if (!info) { int seq = this_cpu_inc_return(taskstats_seqnum) - 1; reply = genlmsg_put(skb, 0, seq, &family, 0, cmd); } else reply = genlmsg_put_reply(skb, info, &family, 0, cmd); if (reply == NULL) { nlmsg_free(skb); return -EINVAL; } *skbp = skb; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Shailabh Nagar11791.41%114.29%
Thomas Graf75.47%457.14%
Christoph Lameter32.34%114.29%
Balbir Singh10.78%114.29%
Total128100.00%7100.00%

/* * Send taskstats data in @skb to listener with nl_pid @pid */
static int send_reply(struct sk_buff *skb, struct genl_info *info) { struct genlmsghdr *genlhdr = nlmsg_data(nlmsg_hdr(skb)); void *reply = genlmsg_data(genlhdr); genlmsg_end(skb, reply); return genlmsg_reply(skb, info); }

Contributors

PersonTokensPropCommitsCommitProp
Shailabh Nagar4483.02%250.00%
Johannes Berg611.32%125.00%
Arnaldo Carvalho de Melo35.66%125.00%
Total53100.00%4100.00%

/* * Send taskstats data in @skb to listeners registered for @cpu's exit data */
static void send_cpu_listeners(struct sk_buff *skb, struct listener_list *listeners) { struct genlmsghdr *genlhdr = nlmsg_data(nlmsg_hdr(skb)); struct listener *s, *tmp; struct sk_buff *skb_next, *skb_cur = skb; void *reply = genlmsg_data(genlhdr); int rc, delcount = 0; genlmsg_end(skb, reply); rc = 0; down_read(&listeners->sem); list_for_each_entry(s, &listeners->list, list) { skb_next = NULL; if (!list_is_last(&s->list, &listeners->list)) { skb_next = skb_clone(skb_cur, GFP_KERNEL); if (!skb_next) break; } rc = genlmsg_unicast(&init_net, skb_cur, s->pid); if (rc == -ECONNREFUSED) { s->valid = 0; delcount++; } skb_cur = skb_next; } up_read(&listeners->sem); if (skb_cur) nlmsg_free(skb_cur); if (!delcount) return; /* Delete invalidated entries */ down_write(&listeners->sem); list_for_each_entry_safe(s, tmp, &listeners->list, list) { if (!s->valid) { list_del(&s->list); kfree(s); } } up_write(&listeners->sem); }

Contributors

PersonTokensPropCommitsCommitProp
Shailabh Nagar22995.82%457.14%
Oleg Nesterov41.67%114.29%
Arnaldo Carvalho de Melo31.26%114.29%
Johannes Berg31.26%114.29%
Total239100.00%7100.00%


static void fill_stats(struct user_namespace *user_ns, struct pid_namespace *pid_ns, struct task_struct *tsk, struct taskstats *stats) { memset(stats, 0, sizeof(*stats)); /* * Each accounting subsystem adds calls to its functions to * fill in relevant parts of struct taskstsats as follows * * per-task-foo(stats, tsk); */ delayacct_add_tsk(stats, tsk); /* fill in basic acct fields */ stats->version = TASKSTATS_VERSION; stats->nvcsw = tsk->nvcsw; stats->nivcsw = tsk->nivcsw; bacct_add_tsk(user_ns, pid_ns, stats, tsk); /* fill in extended acct fields */ xacct_add_tsk(stats, tsk); }

Contributors

PersonTokensPropCommitsCommitProp
Shailabh Nagar2629.21%330.00%
Jay Lan1617.98%220.00%
Maxim Uvarov1617.98%110.00%
Oleg Nesterov1415.73%220.00%
Eric W. Biedermann1415.73%110.00%
Michael Holzheu33.37%110.00%
Total89100.00%10100.00%


static int fill_stats_for_pid(pid_t pid, struct taskstats *stats) { struct task_struct *tsk; rcu_read_lock(); tsk = find_task_by_vpid(pid); if (tsk) get_task_struct(tsk); rcu_read_unlock(); if (!tsk) return -ESRCH; fill_stats(current_user_ns(), task_active_pid_ns(current), tsk, stats); put_task_struct(tsk); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Michael Holzheu5778.08%133.33%
Shailabh Nagar810.96%133.33%
Eric W. Biedermann810.96%133.33%
Total73100.00%3100.00%


static int fill_stats_for_tgid(pid_t tgid, struct taskstats *stats) { struct task_struct *tsk, *first; unsigned long flags; int rc = -ESRCH; u64 delta, utime, stime; u64 start_time; /* * Add additional stats from live tasks except zombie thread group * leaders who are already counted with the dead tasks */ rcu_read_lock(); first = find_task_by_vpid(tgid); if (!first || !lock_task_sighand(first, &flags)) goto out; if (first->signal->stats) memcpy(stats, first->signal->stats, sizeof(*stats)); else memset(stats, 0, sizeof(*stats)); tsk = first; start_time = ktime_get_ns(); do { if (tsk->exit_state) continue; /* * Accounting subsystem can call its functions here to * fill in relevant parts of struct taskstsats as follows * * per-task-foo(stats, tsk); */ delayacct_add_tsk(stats, tsk); /* calculate task elapsed time in nsec */ delta = start_time - tsk->start_time; /* Convert to micro seconds */ do_div(delta, NSEC_PER_USEC); stats->ac_etime += delta; task_cputime(tsk, &utime, &stime); stats->ac_utime += div_u64(utime, NSEC_PER_USEC); stats->ac_stime += div_u64(stime, NSEC_PER_USEC); stats->nvcsw += tsk->nvcsw; stats->nivcsw += tsk->nivcsw; } while_each_thread(first, tsk);

Contributors

PersonTokensPropCommitsCommitProp
Shailabh Nagar8841.51%333.33%
Zhang Xiao7133.49%111.11%
Oleg Nesterov3215.09%222.22%
Maxim Uvarov167.55%111.11%
Michael Holzheu41.89%111.11%
Pavel Emelyanov10.47%111.11%
Total212100.00%9100.00%

unlock_task_sighand(first, &flags); rc = 0; out: rcu_read_unlock(); stats->version = TASKSTATS_VERSION; /* * Accounting subsystems can also add calls here to modify * fields of taskstats. */ return rc;
} static void fill_tgid_exit(struct task_struct *tsk) { unsigned long flags; spin_lock_irqsave(&tsk->sighand->siglock, flags); if (!tsk->signal->stats) goto ret; /* * Each accounting subsystem calls its functions here to * accumalate its per-task stats for tsk, into the per-tgid structure * * per-task-foo(tsk->signal->stats, tsk); */ delayacct_add_tsk(tsk->signal->stats, tsk); ret: spin_unlock_irqrestore(&tsk->sighand->siglock, flags); return; }

Contributors

PersonTokensPropCommitsCommitProp
Shailabh Nagar6192.42%250.00%
Oleg Nesterov46.06%125.00%
Michael Holzheu11.52%125.00%
Total66100.00%4100.00%


static int add_del_listener(pid_t pid, const struct cpumask *mask, int isadd) { struct listener_list *listeners; struct listener *s, *tmp, *s2; unsigned int cpu; int ret = 0; if (!cpumask_subset(mask, cpu_possible_mask)) return -EINVAL; if (current_user_ns() != &init_user_ns) return -EINVAL; if (task_active_pid_ns(current) != &init_pid_ns) return -EINVAL; if (isadd == REGISTER) { for_each_cpu(cpu, mask) { s = kmalloc_node(sizeof(struct listener), GFP_KERNEL, cpu_to_node(cpu)); if (!s) { ret = -ENOMEM; goto cleanup; } s->pid = pid; s->valid = 1; listeners = &per_cpu(listener_array, cpu); down_write(&listeners->sem); list_for_each_entry(s2, &listeners->list, list) { if (s2->pid == pid && s2->valid) goto exists; } list_add(&s->list, &listeners->list); s = NULL; exists: up_write(&listeners->sem); kfree(s); /* nop if NULL */ } return 0; } /* Deregister or cleanup */ cleanup: for_each_cpu(cpu, mask) { listeners = &per_cpu(listener_array, cpu); down_write(&listeners->sem); list_for_each_entry_safe(s, tmp, &listeners->list, list) { if (s->pid == pid) { list_del(&s->list); kfree(s); break; } } up_write(&listeners->sem); } return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Shailabh Nagar21170.57%225.00%
Vasiliy Kulikov3210.70%112.50%
Eric W. Biedermann268.70%112.50%
Chen Gang S134.35%112.50%
Oleg Nesterov93.01%225.00%
Rusty Russell82.68%112.50%
Total299100.00%8100.00%


static int parse(struct nlattr *na, struct cpumask *mask) { char *data; int len; int ret; if (na == NULL) return 1; len = nla_len(na); if (len > TASKSTATS_CPUMASK_MAXLEN) return -E2BIG; if (len < 1) return -EINVAL; data = kmalloc(len, GFP_KERNEL); if (!data) return -ENOMEM; nla_strlcpy(data, na, len); ret = cpulist_parse(data, mask); kfree(data); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Shailabh Nagar10498.11%266.67%
Rusty Russell21.89%133.33%
Total106100.00%3100.00%


static struct taskstats *mk_reply(struct sk_buff *skb, int type, u32 pid) { struct nlattr *na, *ret; int aggr; aggr = (type == TASKSTATS_TYPE_PID) ? TASKSTATS_TYPE_AGGR_PID : TASKSTATS_TYPE_AGGR_TGID; na = nla_nest_start(skb, aggr); if (!na) goto err; if (nla_put(skb, type, sizeof(pid), &pid) < 0) { nla_nest_cancel(skb, na); goto err; } ret = nla_reserve_64bit(skb, TASKSTATS_TYPE_STATS, sizeof(struct taskstats), TASKSTATS_TYPE_NULL); if (!ret) { nla_nest_cancel(skb, na); goto err; } nla_nest_end(skb, na); return nla_data(ret); err: return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Oleg Nesterov11580.99%350.00%
Chen Gang S1812.68%116.67%
Jeff Mahoney64.23%116.67%
Nicolas Dichtel32.11%116.67%
Total142100.00%6100.00%


static int cgroupstats_user_cmd(struct sk_buff *skb, struct genl_info *info) { int rc = 0; struct sk_buff *rep_skb; struct cgroupstats *stats; struct nlattr *na; size_t size; u32 fd; struct fd f; na = info->attrs[CGROUPSTATS_CMD_ATTR_FD]; if (!na) return -EINVAL; fd = nla_get_u32(info->attrs[CGROUPSTATS_CMD_ATTR_FD]); f = fdget(fd); if (!f.file) return 0; size = nla_total_size(sizeof(struct cgroupstats)); rc = prepare_reply(info, CGROUPSTATS_CMD_NEW, &rep_skb, size); if (rc < 0) goto err; na = nla_reserve(rep_skb, CGROUPSTATS_TYPE_CGROUP_STATS, sizeof(struct cgroupstats)); if (na == NULL) { nlmsg_free(rep_skb); rc = -EMSGSIZE; goto err; } stats = nla_data(na); memset(stats, 0, sizeof(*stats)); rc = cgroupstats_build(stats, f.file->f_path.dentry); if (rc < 0) { nlmsg_free(rep_skb); goto err; } rc = send_reply(rep_skb, info); err: fdput(f); return rc; }

Contributors

PersonTokensPropCommitsCommitProp
Balbir Singh18579.40%116.67%
Alan Cox166.87%116.67%
Adrian Bunk146.01%116.67%
Al Viro135.58%233.33%
Jesper Juhl52.15%116.67%
Total233100.00%6100.00%


static int cmd_attr_register_cpumask(struct genl_info *info) { cpumask_var_t mask; int rc; if (!alloc_cpumask_var(&mask, GFP_KERNEL)) return -ENOMEM; rc = parse(info->attrs[TASKSTATS_CMD_ATTR_REGISTER_CPUMASK], mask); if (rc < 0) goto out; rc = add_del_listener(info->snd_portid, mask, REGISTER); out: free_cpumask_var(mask); return rc; }

Contributors

PersonTokensPropCommitsCommitProp
Shailabh Nagar4051.28%350.00%
Rusty Russell2228.21%116.67%
Michael Holzheu1519.23%116.67%
Eric W. Biedermann11.28%116.67%
Total78100.00%6100.00%


static int cmd_attr_deregister_cpumask(struct genl_info *info) { cpumask_var_t mask; int rc; if (!alloc_cpumask_var(&mask, GFP_KERNEL)) return -ENOMEM; rc = parse(info->attrs[TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK], mask); if (rc < 0) goto out; rc = add_del_listener(info->snd_portid, mask, DEREGISTER); out: free_cpumask_var(mask); return rc; }

Contributors

PersonTokensPropCommitsCommitProp
Michael Holzheu3342.31%125.00%
Shailabh Nagar3038.46%125.00%
Rusty Russell1417.95%125.00%
Eric W. Biedermann11.28%125.00%
Total78100.00%4100.00%


static size_t taskstats_packet_size(void) { size_t size; size = nla_total_size(sizeof(u32)) + nla_total_size_64bit(sizeof(struct taskstats)) + nla_total_size(0); return size; }

Contributors

PersonTokensPropCommitsCommitProp
Jeff Mahoney3797.37%150.00%
Nicolas Dichtel12.63%150.00%
Total38100.00%2100.00%


static int cmd_attr_pid(struct genl_info *info) { struct taskstats *stats; struct sk_buff *rep_skb; size_t size; u32 pid; int rc; size = taskstats_packet_size(); rc = prepare_reply(info, TASKSTATS_CMD_NEW, &rep_skb, size); if (rc < 0) return rc; rc = -EINVAL; pid = nla_get_u32(info->attrs[TASKSTATS_CMD_ATTR_PID]); stats = mk_reply(rep_skb, TASKSTATS_TYPE_PID, pid); if (!stats) goto err; rc = fill_stats_for_pid(pid, stats); if (rc < 0) goto err; return send_reply(rep_skb, info); err: nlmsg_free(rep_skb); return rc; }

Contributors

PersonTokensPropCommitsCommitProp
Shailabh Nagar5340.77%114.29%
Michael Holzheu5038.46%228.57%
Oleg Nesterov2519.23%342.86%
Jeff Mahoney21.54%114.29%
Total130100.00%7100.00%


static int cmd_attr_tgid(struct genl_info *info) { struct taskstats *stats; struct sk_buff *rep_skb; size_t size; u32 tgid; int rc; size = taskstats_packet_size(); rc = prepare_reply(info, TASKSTATS_CMD_NEW, &rep_skb, size); if (rc < 0) return rc; rc = -EINVAL; tgid = nla_get_u32(info->attrs[TASKSTATS_CMD_ATTR_TGID]); stats = mk_reply(rep_skb, TASKSTATS_TYPE_TGID, tgid); if (!stats) goto err; rc = fill_stats_for_tgid(tgid, stats); if (rc < 0) goto err; return send_reply(rep_skb, info); err: nlmsg_free(rep_skb); return rc; }

Contributors

PersonTokensPropCommitsCommitProp
Michael Holzheu6046.15%228.57%
Shailabh Nagar4836.92%114.29%
Oleg Nesterov2015.38%342.86%
Jeff Mahoney21.54%114.29%
Total130100.00%7100.00%


static int taskstats_user_cmd(struct sk_buff *skb, struct genl_info *info) { if (info->attrs[TASKSTATS_CMD_ATTR_REGISTER_CPUMASK]) return cmd_attr_register_cpumask(info); else if (info->attrs[TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK]) return cmd_attr_deregister_cpumask(info); else if (info->attrs[TASKSTATS_CMD_ATTR_PID]) return cmd_attr_pid(info); else if (info->attrs[TASKSTATS_CMD_ATTR_TGID]) return cmd_attr_tgid(info); else return -EINVAL; }

Contributors

PersonTokensPropCommitsCommitProp
Michael Holzheu84100.00%1100.00%
Total84100.00%1100.00%


static struct taskstats *taskstats_tgid_alloc(struct task_struct *tsk) { struct signal_struct *sig = tsk->signal; struct taskstats *stats; if (sig->stats || thread_group_empty(tsk)) goto ret; /* No problem if kmem_cache_zalloc() fails */ stats = kmem_cache_zalloc(taskstats_cache, GFP_KERNEL); spin_lock_irq(&tsk->sighand->siglock); if (!sig->stats) { sig->stats = stats; stats = NULL; } spin_unlock_irq(&tsk->sighand->siglock); if (stats) kmem_cache_free(taskstats_cache, stats); ret: return sig->stats; }

Contributors

PersonTokensPropCommitsCommitProp
Oleg Nesterov108100.00%1100.00%
Total108100.00%1100.00%

/* Send pid data out on exit */
void taskstats_exit(struct task_struct *tsk, int group_dead) { int rc; struct listener_list *listeners; struct taskstats *stats; struct sk_buff *rep_skb; size_t size; int is_thread_group; if (!family_registered) return; /* * Size includes space for nested attributes */ size = taskstats_packet_size(); is_thread_group = !!taskstats_tgid_alloc(tsk); if (is_thread_group) { /* PID + STATS + TGID + STATS */ size = 2 * size; /* fill the tsk->signal->stats structure */ fill_tgid_exit(tsk); } listeners = raw_cpu_ptr(&listener_array); if (list_empty(&listeners->list)) return; rc = prepare_reply(NULL, TASKSTATS_CMD_NEW, &rep_skb, size); if (rc < 0) return; stats = mk_reply(rep_skb, TASKSTATS_TYPE_PID, task_pid_nr_ns(tsk, &init_pid_ns)); if (!stats) goto err; fill_stats(&init_user_ns, &init_pid_ns, tsk, stats); /* * Doesn't matter if tsk is the leader or the last group member leaving */ if (!is_thread_group || !group_dead) goto send; stats = mk_reply(rep_skb, TASKSTATS_TYPE_TGID, task_tgid_nr_ns(tsk, &init_pid_ns)); if (!stats) goto err; memcpy(stats, tsk->signal->stats, sizeof(*stats)); send: send_cpu_listeners(rep_skb, listeners); return; err: nlmsg_free(rep_skb); }

Contributors

PersonTokensPropCommitsCommitProp
Shailabh Nagar10747.35%320.00%
Oleg Nesterov9642.48%746.67%
Eric W. Biedermann187.96%16.67%
Jeff Mahoney20.88%16.67%
Christoph Lameter20.88%213.33%
Michael Holzheu10.44%16.67%
Total226100.00%15100.00%

static const struct genl_ops taskstats_ops[] = { { .cmd = TASKSTATS_CMD_GET, .doit = taskstats_user_cmd, .policy = taskstats_cmd_get_policy, .flags = GENL_ADMIN_PERM, }, { .cmd = CGROUPSTATS_CMD_GET, .doit = cgroupstats_user_cmd, .policy = cgroupstats_cmd_get_policy, }, }; static struct genl_family family __ro_after_init = { .name = TASKSTATS_GENL_NAME, .version = TASKSTATS_GENL_VERSION, .maxattr = TASKSTATS_CMD_ATTR_MAX, .module = THIS_MODULE, .ops = taskstats_ops, .n_ops = ARRAY_SIZE(taskstats_ops), }; /* Needed early in initialization */
void __init taskstats_init_early(void) { unsigned int i; taskstats_cache = KMEM_CACHE(taskstats, SLAB_PANIC); for_each_possible_cpu(i) { INIT_LIST_HEAD(&(per_cpu(listener_array, i).list)); init_rwsem(&(per_cpu(listener_array, i).sem)); } }

Contributors

PersonTokensPropCommitsCommitProp
Shailabh Nagar5698.25%266.67%
Christoph Lameter11.75%133.33%
Total57100.00%3100.00%


static int __init taskstats_init(void) { int rc; rc = genl_register_family(&family); if (rc) return rc; family_registered = 1; pr_info("registered taskstats version %d\n", TASKSTATS_GENL_VERSION); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Shailabh Nagar2458.54%120.00%
Balbir Singh1229.27%120.00%
Johannes Berg49.76%240.00%
Mandeep Singh Baines12.44%120.00%
Total41100.00%5100.00%

/* * late initcall ensures initialization of statistics collection * mechanisms precedes initialization of the taskstats interface */ late_initcall(taskstats_init);

Overall Contributors

PersonTokensPropCommitsCommitProp
Shailabh Nagar143748.91%711.67%
Oleg Nesterov44115.01%1016.67%
Michael Holzheu30810.48%23.33%
Balbir Singh2498.48%23.33%
Zhang Xiao742.52%11.67%
Eric W. Biedermann712.42%23.33%
Johannes Berg602.04%58.33%
Jeff Mahoney491.67%11.67%
Rusty Russell461.57%11.67%
Vasiliy Kulikov321.09%11.67%
Maxim Uvarov321.09%11.67%
Chen Gang S311.06%23.33%
Jay Lan190.65%23.33%
Alan Cox160.54%11.67%
Adrian Bunk140.48%11.67%
Al Viro130.44%23.33%
Christoph Lameter80.27%46.67%
Thomas Graf70.24%46.67%
Arnaldo Carvalho de Melo60.20%11.67%
Linus Torvalds50.17%11.67%
Jesper Juhl50.17%11.67%
Nicolas Dichtel40.14%11.67%
Tejun Heo30.10%11.67%
Alexey Dobriyan20.07%11.67%
Américo Wang20.07%11.67%
Mandeep Singh Baines10.03%11.67%
Arun Sharma10.03%11.67%
Pavel Emelyanov10.03%11.67%
Robert P. J. Day10.03%11.67%
Total2938100.00%60100.00%
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