X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=kernel%2Ftaskstats.c;h=07e86a828073bc7ebffdcdb67c3ee726be9a5705;hb=319d1e240683d37924ea8977c91730c3393fd453;hp=ad7d2392cb0edd391a62c685d45fadee60e545a8;hpb=a205752d1ad2d37d6597aaae5a56fc396a770868;p=linux-2.6-omap-h63xx.git

diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index ad7d2392cb0..07e86a82807 100644
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -20,9 +20,12 @@
 #include <linux/taskstats_kern.h>
 #include <linux/tsacct_kern.h>
 #include <linux/delayacct.h>
-#include <linux/tsacct_kern.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>
 
@@ -50,6 +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;
@@ -196,6 +204,8 @@ static int fill_pid(pid_t pid, struct task_struct *tsk,
 
 	/* fill in basic acct fields */
 	stats->version = TASKSTATS_VERSION;
+	stats->nvcsw = tsk->nvcsw;
+	stats->nivcsw = tsk->nivcsw;
 	bacct_add_tsk(stats, tsk);
 
 	/* fill in extended acct fields */
@@ -242,6 +252,8 @@ static int fill_tgid(pid_t tgid, struct task_struct *first,
 		 */
 		delayacct_add_tsk(stats, tsk);
 
+		stats->nvcsw += tsk->nvcsw;
+		stats->nivcsw += tsk->nivcsw;
 	} while_each_thread(first, tsk);
 
 	unlock_task_sighand(first, &flags);
@@ -251,7 +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;
@@ -369,6 +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;
@@ -519,14 +576,18 @@ 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)
 {
 	unsigned int i;
 
-	taskstats_cache = kmem_cache_create("taskstats_cache",
-						sizeof(struct taskstats),
-						0, SLAB_PANIC, NULL, NULL);
+	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));
@@ -545,8 +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;