diff options
Diffstat (limited to 'kernel/taskstats.c')
-rw-r--r-- | kernel/taskstats.c | 32 |
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 | */ |
124 | static int send_cpu_listeners(struct sk_buff *skb, unsigned int cpu) | 124 | static 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 | ||
177 | static int fill_pid(pid_t pid, struct task_struct *pidtsk, | 175 | static 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 */ |