x86: make NUMA work on 32-bit

[sfrench/cifs-2.6.git] / kernel / taskstats.c

diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index 7d4d7f9c1bb2a0575cf15f9119c403e696657bb8..07e86a828073bc7ebffdcdb67c3ee726be9a5705 100644 (file)
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -22,6 +22,10 @@
 #include <linux/delayacct.h>
 #include <linux/cpumask.h>
 #include <linux/percpu.h>
+#include <linux/cgroupstats.h>
+#include <linux/cgroup.h>
+#include <linux/fs.h>
+#include <linux/file.h>
 #include <net/genetlink.h>
 #include <asm/atomic.h>
 
@@ -49,6 +53,11 @@ __read_mostly = {
        [TASKSTATS_CMD_ATTR_REGISTER_CPUMASK] = { .type = NLA_STRING },
        [TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK] = { .type = NLA_STRING },};
 
+static struct nla_policy
+cgroupstats_cmd_get_policy[CGROUPSTATS_CMD_ATTR_MAX+1] __read_mostly = {
+       [CGROUPSTATS_CMD_ATTR_FD] = { .type = NLA_U32 },
+};
+
 struct listener {
        struct list_head list;
        pid_t pid;
@@ -254,7 +263,7 @@ out:
 
        stats->version = TASKSTATS_VERSION;
        /*
-        * Accounting subsytems can also add calls here to modify
+        * Accounting subsystems can also add calls here to modify
         * fields of taskstats.
         */
        return rc;
@@ -372,6 +381,51 @@ err:
        return NULL;
 }
 
+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 file *file;
+       int fput_needed;
+
+       na = info->attrs[CGROUPSTATS_CMD_ATTR_FD];
+       if (!na)
+               return -EINVAL;
+
+       fd = nla_get_u32(info->attrs[CGROUPSTATS_CMD_ATTR_FD]);
+       file = fget_light(fd, &fput_needed);
+       if (!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));
+       stats = nla_data(na);
+       memset(stats, 0, sizeof(*stats));
+
+       rc = cgroupstats_build(stats, file->f_dentry);
+       if (rc < 0) {
+               nlmsg_free(rep_skb);
+               goto err;
+       }
+
+       rc = send_reply(rep_skb, info->snd_pid);
+
+err:
+       fput_light(file, fput_needed);
+       return rc;
+}
+
 static int taskstats_user_cmd(struct sk_buff *skb, struct genl_info *info)
 {
        int rc = 0;
@@ -522,6 +576,12 @@ static struct genl_ops taskstats_ops = {
        .policy         = taskstats_cmd_get_policy,
 };
 
+static struct genl_ops cgroupstats_ops = {
+       .cmd            = CGROUPSTATS_CMD_GET,
+       .doit           = cgroupstats_user_cmd,
+       .policy         = cgroupstats_cmd_get_policy,
+};
+
 /* Needed early in initialization */
 void __init taskstats_init_early(void)
 {
@@ -546,8 +606,15 @@ static int __init taskstats_init(void)
        if (rc < 0)
                goto err;
 
+       rc = genl_register_ops(&family, &cgroupstats_ops);
+       if (rc < 0)
+               goto err_cgroup_ops;
+
        family_registered = 1;
+       printk("registered taskstats version %d\n", TASKSTATS_GENL_VERSION);
        return 0;
+err_cgroup_ops:
+       genl_unregister_ops(&family, &taskstats_ops);
 err:
        genl_unregister_family(&family);
        return rc;