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Diffstat (limited to 'kernel/taskstats.c')
-rw-r--r--kernel/taskstats.c32
1 files changed, 14 insertions, 18 deletions
diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index f45179ce028e..e78187657330 100644
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -121,46 +121,45 @@ static int send_reply(struct sk_buff *skb, pid_t pid)
121/* 121/*
122 * Send taskstats data in @skb to listeners registered for @cpu's exit data 122 * Send taskstats data in @skb to listeners registered for @cpu's exit data
123 */ 123 */
124static int send_cpu_listeners(struct sk_buff *skb, unsigned int cpu) 124static void send_cpu_listeners(struct sk_buff *skb, unsigned int cpu)
125{ 125{
126 struct genlmsghdr *genlhdr = nlmsg_data((struct nlmsghdr *)skb->data); 126 struct genlmsghdr *genlhdr = nlmsg_data((struct nlmsghdr *)skb->data);
127 struct listener_list *listeners; 127 struct listener_list *listeners;
128 struct listener *s, *tmp; 128 struct listener *s, *tmp;
129 struct sk_buff *skb_next, *skb_cur = skb; 129 struct sk_buff *skb_next, *skb_cur = skb;
130 void *reply = genlmsg_data(genlhdr); 130 void *reply = genlmsg_data(genlhdr);
131 int rc, ret, delcount = 0; 131 int rc, delcount = 0;
132 132
133 rc = genlmsg_end(skb, reply); 133 rc = genlmsg_end(skb, reply);
134 if (rc < 0) { 134 if (rc < 0) {
135 nlmsg_free(skb); 135 nlmsg_free(skb);
136 return rc; 136 return;
137 } 137 }
138 138
139 rc = 0; 139 rc = 0;
140 listeners = &per_cpu(listener_array, cpu); 140 listeners = &per_cpu(listener_array, cpu);
141 down_read(&listeners->sem); 141 down_read(&listeners->sem);
142 list_for_each_entry_safe(s, tmp, &listeners->list, list) { 142 list_for_each_entry(s, &listeners->list, list) {
143 skb_next = NULL; 143 skb_next = NULL;
144 if (!list_is_last(&s->list, &listeners->list)) { 144 if (!list_is_last(&s->list, &listeners->list)) {
145 skb_next = skb_clone(skb_cur, GFP_KERNEL); 145 skb_next = skb_clone(skb_cur, GFP_KERNEL);
146 if (!skb_next) { 146 if (!skb_next)
147 nlmsg_free(skb_cur);
148 rc = -ENOMEM;
149 break; 147 break;
150 }
151 } 148 }
152 ret = genlmsg_unicast(skb_cur, s->pid); 149 rc = genlmsg_unicast(skb_cur, s->pid);
153 if (ret == -ECONNREFUSED) { 150 if (rc == -ECONNREFUSED) {
154 s->valid = 0; 151 s->valid = 0;
155 delcount++; 152 delcount++;
156 rc = ret;
157 } 153 }
158 skb_cur = skb_next; 154 skb_cur = skb_next;
159 } 155 }
160 up_read(&listeners->sem); 156 up_read(&listeners->sem);
161 157
158 if (skb_cur)
159 nlmsg_free(skb_cur);
160
162 if (!delcount) 161 if (!delcount)
163 return rc; 162 return;
164 163
165 /* Delete invalidated entries */ 164 /* Delete invalidated entries */
166 down_write(&listeners->sem); 165 down_write(&listeners->sem);
@@ -171,13 +170,12 @@ static int send_cpu_listeners(struct sk_buff *skb, unsigned int cpu)
171 } 170 }
172 } 171 }
173 up_write(&listeners->sem); 172 up_write(&listeners->sem);
174 return rc;
175} 173}
176 174
177static int fill_pid(pid_t pid, struct task_struct *pidtsk, 175static int fill_pid(pid_t pid, struct task_struct *pidtsk,
178 struct taskstats *stats) 176 struct taskstats *stats)
179{ 177{
180 int rc; 178 int rc = 0;
181 struct task_struct *tsk = pidtsk; 179 struct task_struct *tsk = pidtsk;
182 180
183 if (!pidtsk) { 181 if (!pidtsk) {
@@ -196,12 +194,10 @@ static int fill_pid(pid_t pid, struct task_struct *pidtsk,
196 * Each accounting subsystem adds calls to its functions to 194 * Each accounting subsystem adds calls to its functions to
197 * fill in relevant parts of struct taskstsats as follows 195 * fill in relevant parts of struct taskstsats as follows
198 * 196 *
199 * rc = per-task-foo(stats, tsk); 197 * per-task-foo(stats, tsk);
200 * if (rc)
201 * goto err;
202 */ 198 */
203 199
204 rc = delayacct_add_tsk(stats, tsk); 200 delayacct_add_tsk(stats, tsk);
205 stats->version = TASKSTATS_VERSION; 201 stats->version = TASKSTATS_VERSION;
206 202
207 /* Define err: label here if needed */ 203 /* Define err: label here if needed */