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Commit | Line | Data |
---|---|---|
a3baf649 SN |
1 | /* getdelays.c |
2 | * | |
3 | * Utility to get per-pid and per-tgid delay accounting statistics | |
4 | * Also illustrates usage of the taskstats interface | |
5 | * | |
6 | * Copyright (C) Shailabh Nagar, IBM Corp. 2005 | |
7 | * Copyright (C) Balbir Singh, IBM Corp. 2006 | |
9e06d3f9 | 8 | * Copyright (c) Jay Lan, SGI. 2006 |
a3baf649 | 9 | * |
d2f7bf13 AM |
10 | * Compile with |
11 | * gcc -I/usr/src/linux/include getdelays.c -o getdelays | |
a3baf649 SN |
12 | */ |
13 | ||
14 | #include <stdio.h> | |
15 | #include <stdlib.h> | |
16 | #include <errno.h> | |
17 | #include <unistd.h> | |
18 | #include <poll.h> | |
19 | #include <string.h> | |
20 | #include <fcntl.h> | |
21 | #include <sys/types.h> | |
22 | #include <sys/stat.h> | |
23 | #include <sys/socket.h> | |
db9e5679 | 24 | #include <sys/wait.h> |
a3baf649 SN |
25 | #include <signal.h> |
26 | ||
27 | #include <linux/genetlink.h> | |
28 | #include <linux/taskstats.h> | |
546040dc | 29 | #include <linux/cgroupstats.h> |
a3baf649 SN |
30 | |
31 | /* | |
32 | * Generic macros for dealing with netlink sockets. Might be duplicated | |
33 | * elsewhere. It is recommended that commercial grade applications use | |
34 | * libnl or libnetlink and use the interfaces provided by the library | |
35 | */ | |
36 | #define GENLMSG_DATA(glh) ((void *)(NLMSG_DATA(glh) + GENL_HDRLEN)) | |
37 | #define GENLMSG_PAYLOAD(glh) (NLMSG_PAYLOAD(glh, 0) - GENL_HDRLEN) | |
38 | #define NLA_DATA(na) ((void *)((char*)(na) + NLA_HDRLEN)) | |
39 | #define NLA_PAYLOAD(len) (len - NLA_HDRLEN) | |
40 | ||
d2f7bf13 AM |
41 | #define err(code, fmt, arg...) \ |
42 | do { \ | |
43 | fprintf(stderr, fmt, ##arg); \ | |
44 | exit(code); \ | |
45 | } while (0) | |
46 | ||
47 | int done; | |
48 | int rcvbufsz; | |
49 | char name[100]; | |
50 | int dbg; | |
51 | int print_delays; | |
cf709844 | 52 | int print_io_accounting; |
b663a79c | 53 | int print_task_context_switch_counts; |
9e06d3f9 | 54 | __u64 stime, utime; |
d2f7bf13 | 55 | |
9e06d3f9 SN |
56 | #define PRINTF(fmt, arg...) { \ |
57 | if (dbg) { \ | |
58 | printf(fmt, ##arg); \ | |
59 | } \ | |
60 | } | |
61 | ||
62 | /* Maximum size of response requested or message sent */ | |
88040230 | 63 | #define MAX_MSG_SIZE 1024 |
9e06d3f9 SN |
64 | /* Maximum number of cpus expected to be specified in a cpumask */ |
65 | #define MAX_CPUS 32 | |
9e06d3f9 SN |
66 | |
67 | struct msgtemplate { | |
68 | struct nlmsghdr n; | |
69 | struct genlmsghdr g; | |
70 | char buf[MAX_MSG_SIZE]; | |
71 | }; | |
72 | ||
73 | char cpumask[100+6*MAX_CPUS]; | |
a3baf649 | 74 | |
f16825bb RD |
75 | static void usage(void) |
76 | { | |
77 | fprintf(stderr, "getdelays [-dilv] [-w logfile] [-r bufsize] " | |
78 | "[-m cpumask] [-t tgid] [-p pid]\n"); | |
79 | fprintf(stderr, " -d: print delayacct stats\n"); | |
80 | fprintf(stderr, " -i: print IO accounting (works only with -p)\n"); | |
81 | fprintf(stderr, " -l: listen forever\n"); | |
82 | fprintf(stderr, " -v: debug on\n"); | |
546040dc | 83 | fprintf(stderr, " -C: container path\n"); |
f16825bb RD |
84 | } |
85 | ||
a3baf649 SN |
86 | /* |
87 | * Create a raw netlink socket and bind | |
88 | */ | |
9e06d3f9 | 89 | static int create_nl_socket(int protocol) |
a3baf649 | 90 | { |
9e06d3f9 SN |
91 | int fd; |
92 | struct sockaddr_nl local; | |
93 | ||
94 | fd = socket(AF_NETLINK, SOCK_RAW, protocol); | |
95 | if (fd < 0) | |
96 | return -1; | |
97 | ||
98 | if (rcvbufsz) | |
99 | if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, | |
100 | &rcvbufsz, sizeof(rcvbufsz)) < 0) { | |
d2f7bf13 AM |
101 | fprintf(stderr, "Unable to set socket rcv buf size " |
102 | "to %d\n", | |
103 | rcvbufsz); | |
9e06d3f9 SN |
104 | return -1; |
105 | } | |
a3baf649 | 106 | |
9e06d3f9 SN |
107 | memset(&local, 0, sizeof(local)); |
108 | local.nl_family = AF_NETLINK; | |
a3baf649 | 109 | |
9e06d3f9 SN |
110 | if (bind(fd, (struct sockaddr *) &local, sizeof(local)) < 0) |
111 | goto error; | |
a3baf649 | 112 | |
9e06d3f9 SN |
113 | return fd; |
114 | error: | |
115 | close(fd); | |
116 | return -1; | |
a3baf649 SN |
117 | } |
118 | ||
9e06d3f9 | 119 | |
b7ed698c | 120 | static int send_cmd(int sd, __u16 nlmsg_type, __u32 nlmsg_pid, |
9e06d3f9 SN |
121 | __u8 genl_cmd, __u16 nla_type, |
122 | void *nla_data, int nla_len) | |
a3baf649 | 123 | { |
9e06d3f9 SN |
124 | struct nlattr *na; |
125 | struct sockaddr_nl nladdr; | |
126 | int r, buflen; | |
127 | char *buf; | |
128 | ||
129 | struct msgtemplate msg; | |
130 | ||
131 | msg.n.nlmsg_len = NLMSG_LENGTH(GENL_HDRLEN); | |
132 | msg.n.nlmsg_type = nlmsg_type; | |
133 | msg.n.nlmsg_flags = NLM_F_REQUEST; | |
134 | msg.n.nlmsg_seq = 0; | |
135 | msg.n.nlmsg_pid = nlmsg_pid; | |
136 | msg.g.cmd = genl_cmd; | |
137 | msg.g.version = 0x1; | |
138 | na = (struct nlattr *) GENLMSG_DATA(&msg); | |
139 | na->nla_type = nla_type; | |
140 | na->nla_len = nla_len + 1 + NLA_HDRLEN; | |
141 | memcpy(NLA_DATA(na), nla_data, nla_len); | |
142 | msg.n.nlmsg_len += NLMSG_ALIGN(na->nla_len); | |
143 | ||
144 | buf = (char *) &msg; | |
145 | buflen = msg.n.nlmsg_len ; | |
146 | memset(&nladdr, 0, sizeof(nladdr)); | |
147 | nladdr.nl_family = AF_NETLINK; | |
148 | while ((r = sendto(sd, buf, buflen, 0, (struct sockaddr *) &nladdr, | |
149 | sizeof(nladdr))) < buflen) { | |
150 | if (r > 0) { | |
151 | buf += r; | |
152 | buflen -= r; | |
153 | } else if (errno != EAGAIN) | |
154 | return -1; | |
155 | } | |
156 | return 0; | |
a3baf649 SN |
157 | } |
158 | ||
9e06d3f9 | 159 | |
a3baf649 SN |
160 | /* |
161 | * Probe the controller in genetlink to find the family id | |
162 | * for the TASKSTATS family | |
163 | */ | |
b7ed698c | 164 | static int get_family_id(int sd) |
a3baf649 | 165 | { |
9e06d3f9 SN |
166 | struct { |
167 | struct nlmsghdr n; | |
168 | struct genlmsghdr g; | |
169 | char buf[256]; | |
170 | } ans; | |
171 | ||
10e6f32b | 172 | int id = 0, rc; |
9e06d3f9 SN |
173 | struct nlattr *na; |
174 | int rep_len; | |
175 | ||
176 | strcpy(name, TASKSTATS_GENL_NAME); | |
177 | rc = send_cmd(sd, GENL_ID_CTRL, getpid(), CTRL_CMD_GETFAMILY, | |
178 | CTRL_ATTR_FAMILY_NAME, (void *)name, | |
179 | strlen(TASKSTATS_GENL_NAME)+1); | |
4ed960b1 AM |
180 | if (rc < 0) |
181 | return 0; /* sendto() failure? */ | |
9e06d3f9 SN |
182 | |
183 | rep_len = recv(sd, &ans, sizeof(ans), 0); | |
184 | if (ans.n.nlmsg_type == NLMSG_ERROR || | |
185 | (rep_len < 0) || !NLMSG_OK((&ans.n), rep_len)) | |
186 | return 0; | |
a3baf649 | 187 | |
9e06d3f9 SN |
188 | na = (struct nlattr *) GENLMSG_DATA(&ans); |
189 | na = (struct nlattr *) ((char *) na + NLA_ALIGN(na->nla_len)); | |
190 | if (na->nla_type == CTRL_ATTR_FAMILY_ID) { | |
191 | id = *(__u16 *) NLA_DATA(na); | |
192 | } | |
193 | return id; | |
a3baf649 SN |
194 | } |
195 | ||
02d54f09 WF |
196 | #define average_ms(t, c) (t / 1000000ULL / (c ? c : 1)) |
197 | ||
b7ed698c | 198 | static void print_delayacct(struct taskstats *t) |
a3baf649 | 199 | { |
02d54f09 WF |
200 | printf("\n\nCPU %15s%15s%15s%15s%15s\n" |
201 | " %15llu%15llu%15llu%15llu%15.3fms\n" | |
202 | "IO %15s%15s%15s\n" | |
203 | " %15llu%15llu%15llums\n" | |
204 | "SWAP %15s%15s%15s\n" | |
205 | " %15llu%15llu%15llums\n" | |
206 | "RECLAIM %12s%15s%15s\n" | |
207 | " %15llu%15llu%15llums\n", | |
208 | "count", "real total", "virtual total", | |
209 | "delay total", "delay average", | |
66659313 RD |
210 | (unsigned long long)t->cpu_count, |
211 | (unsigned long long)t->cpu_run_real_total, | |
212 | (unsigned long long)t->cpu_run_virtual_total, | |
213 | (unsigned long long)t->cpu_delay_total, | |
02d54f09 WF |
214 | average_ms((double)t->cpu_delay_total, t->cpu_count), |
215 | "count", "delay total", "delay average", | |
66659313 RD |
216 | (unsigned long long)t->blkio_count, |
217 | (unsigned long long)t->blkio_delay_total, | |
02d54f09 WF |
218 | average_ms(t->blkio_delay_total, t->blkio_count), |
219 | "count", "delay total", "delay average", | |
66659313 RD |
220 | (unsigned long long)t->swapin_count, |
221 | (unsigned long long)t->swapin_delay_total, | |
02d54f09 WF |
222 | average_ms(t->swapin_delay_total, t->swapin_count), |
223 | "count", "delay total", "delay average", | |
66659313 | 224 | (unsigned long long)t->freepages_count, |
02d54f09 WF |
225 | (unsigned long long)t->freepages_delay_total, |
226 | average_ms(t->freepages_delay_total, t->freepages_count)); | |
a3baf649 SN |
227 | } |
228 | ||
b7ed698c | 229 | static void task_context_switch_counts(struct taskstats *t) |
b663a79c MU |
230 | { |
231 | printf("\n\nTask %15s%15s\n" | |
10e6f32b | 232 | " %15llu%15llu\n", |
b663a79c | 233 | "voluntary", "nonvoluntary", |
66659313 | 234 | (unsigned long long)t->nvcsw, (unsigned long long)t->nivcsw); |
b663a79c MU |
235 | } |
236 | ||
b7ed698c | 237 | static void print_cgroupstats(struct cgroupstats *c) |
546040dc BS |
238 | { |
239 | printf("sleeping %llu, blocked %llu, running %llu, stopped %llu, " | |
66659313 RD |
240 | "uninterruptible %llu\n", (unsigned long long)c->nr_sleeping, |
241 | (unsigned long long)c->nr_io_wait, | |
242 | (unsigned long long)c->nr_running, | |
243 | (unsigned long long)c->nr_stopped, | |
244 | (unsigned long long)c->nr_uninterruptible); | |
546040dc BS |
245 | } |
246 | ||
247 | ||
b7ed698c | 248 | static void print_ioacct(struct taskstats *t) |
cf709844 AM |
249 | { |
250 | printf("%s: read=%llu, write=%llu, cancelled_write=%llu\n", | |
251 | t->ac_comm, | |
252 | (unsigned long long)t->read_bytes, | |
253 | (unsigned long long)t->write_bytes, | |
254 | (unsigned long long)t->cancelled_write_bytes); | |
255 | } | |
256 | ||
a3baf649 SN |
257 | int main(int argc, char *argv[]) |
258 | { | |
b8d9a865 JSR |
259 | int c, rc, rep_len, aggr_len, len2; |
260 | int cmd_type = TASKSTATS_CMD_ATTR_UNSPEC; | |
9e06d3f9 SN |
261 | __u16 id; |
262 | __u32 mypid; | |
263 | ||
264 | struct nlattr *na; | |
265 | int nl_sd = -1; | |
266 | int len = 0; | |
267 | pid_t tid = 0; | |
268 | pid_t rtid = 0; | |
269 | ||
270 | int fd = 0; | |
271 | int count = 0; | |
272 | int write_file = 0; | |
273 | int maskset = 0; | |
7f76c403 | 274 | char *logfile = NULL; |
9e06d3f9 | 275 | int loop = 0; |
546040dc BS |
276 | int containerset = 0; |
277 | char containerpath[1024]; | |
278 | int cfd = 0; | |
db9e5679 MG |
279 | int forking = 0; |
280 | sigset_t sigset; | |
9e06d3f9 SN |
281 | |
282 | struct msgtemplate msg; | |
283 | ||
db9e5679 MG |
284 | while (!forking) { |
285 | c = getopt(argc, argv, "qdiw:r:m:t:p:vlC:c:"); | |
9e06d3f9 SN |
286 | if (c < 0) |
287 | break; | |
a3baf649 | 288 | |
9e06d3f9 SN |
289 | switch (c) { |
290 | case 'd': | |
291 | printf("print delayacct stats ON\n"); | |
292 | print_delays = 1; | |
293 | break; | |
cf709844 AM |
294 | case 'i': |
295 | printf("printing IO accounting\n"); | |
296 | print_io_accounting = 1; | |
297 | break; | |
b663a79c MU |
298 | case 'q': |
299 | printf("printing task/process context switch rates\n"); | |
300 | print_task_context_switch_counts = 1; | |
301 | break; | |
546040dc BS |
302 | case 'C': |
303 | containerset = 1; | |
304 | strncpy(containerpath, optarg, strlen(optarg) + 1); | |
305 | break; | |
9e06d3f9 | 306 | case 'w': |
7f76c403 | 307 | logfile = strdup(optarg); |
9e06d3f9 SN |
308 | printf("write to file %s\n", logfile); |
309 | write_file = 1; | |
310 | break; | |
311 | case 'r': | |
312 | rcvbufsz = atoi(optarg); | |
313 | printf("receive buf size %d\n", rcvbufsz); | |
314 | if (rcvbufsz < 0) | |
315 | err(1, "Invalid rcv buf size\n"); | |
316 | break; | |
317 | case 'm': | |
318 | strncpy(cpumask, optarg, sizeof(cpumask)); | |
319 | maskset = 1; | |
320 | printf("cpumask %s maskset %d\n", cpumask, maskset); | |
321 | break; | |
322 | case 't': | |
323 | tid = atoi(optarg); | |
324 | if (!tid) | |
325 | err(1, "Invalid tgid\n"); | |
326 | cmd_type = TASKSTATS_CMD_ATTR_TGID; | |
9e06d3f9 SN |
327 | break; |
328 | case 'p': | |
329 | tid = atoi(optarg); | |
330 | if (!tid) | |
331 | err(1, "Invalid pid\n"); | |
332 | cmd_type = TASKSTATS_CMD_ATTR_PID; | |
9e06d3f9 | 333 | break; |
db9e5679 MG |
334 | case 'c': |
335 | ||
336 | /* Block SIGCHLD for sigwait() later */ | |
337 | if (sigemptyset(&sigset) == -1) | |
338 | err(1, "Failed to empty sigset"); | |
339 | if (sigaddset(&sigset, SIGCHLD)) | |
340 | err(1, "Failed to set sigchld in sigset"); | |
341 | sigprocmask(SIG_BLOCK, &sigset, NULL); | |
342 | ||
343 | /* fork/exec a child */ | |
344 | tid = fork(); | |
345 | if (tid < 0) | |
346 | err(1, "Fork failed\n"); | |
347 | if (tid == 0) | |
348 | if (execvp(argv[optind - 1], | |
349 | &argv[optind - 1]) < 0) | |
350 | exit(-1); | |
351 | ||
352 | /* Set the command type and avoid further processing */ | |
353 | cmd_type = TASKSTATS_CMD_ATTR_PID; | |
354 | forking = 1; | |
355 | break; | |
9e06d3f9 SN |
356 | case 'v': |
357 | printf("debug on\n"); | |
358 | dbg = 1; | |
359 | break; | |
360 | case 'l': | |
361 | printf("listen forever\n"); | |
362 | loop = 1; | |
363 | break; | |
364 | default: | |
f16825bb | 365 | usage(); |
9e06d3f9 | 366 | exit(-1); |
a3baf649 | 367 | } |
a3baf649 | 368 | } |
a3baf649 | 369 | |
9e06d3f9 SN |
370 | if (write_file) { |
371 | fd = open(logfile, O_WRONLY | O_CREAT | O_TRUNC, | |
372 | S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH); | |
373 | if (fd == -1) { | |
374 | perror("Cannot open output file\n"); | |
375 | exit(1); | |
376 | } | |
377 | } | |
a3baf649 | 378 | |
9e06d3f9 SN |
379 | if ((nl_sd = create_nl_socket(NETLINK_GENERIC)) < 0) |
380 | err(1, "error creating Netlink socket\n"); | |
a3baf649 | 381 | |
a3baf649 | 382 | |
9e06d3f9 SN |
383 | mypid = getpid(); |
384 | id = get_family_id(nl_sd); | |
385 | if (!id) { | |
d2f7bf13 | 386 | fprintf(stderr, "Error getting family id, errno %d\n", errno); |
9e06d3f9 | 387 | goto err; |
a3baf649 | 388 | } |
9e06d3f9 SN |
389 | PRINTF("family id %d\n", id); |
390 | ||
391 | if (maskset) { | |
392 | rc = send_cmd(nl_sd, id, mypid, TASKSTATS_CMD_GET, | |
393 | TASKSTATS_CMD_ATTR_REGISTER_CPUMASK, | |
7d1bdca9 | 394 | &cpumask, strlen(cpumask) + 1); |
9e06d3f9 SN |
395 | PRINTF("Sent register cpumask, retval %d\n", rc); |
396 | if (rc < 0) { | |
d2f7bf13 | 397 | fprintf(stderr, "error sending register cpumask\n"); |
9e06d3f9 SN |
398 | goto err; |
399 | } | |
a3baf649 SN |
400 | } |
401 | ||
546040dc BS |
402 | if (tid && containerset) { |
403 | fprintf(stderr, "Select either -t or -C, not both\n"); | |
404 | goto err; | |
405 | } | |
406 | ||
db9e5679 MG |
407 | /* |
408 | * If we forked a child, wait for it to exit. Cannot use waitpid() | |
409 | * as all the delicious data would be reaped as part of the wait | |
410 | */ | |
411 | if (tid && forking) { | |
412 | int sig_received; | |
413 | sigwait(&sigset, &sig_received); | |
414 | } | |
415 | ||
9e06d3f9 SN |
416 | if (tid) { |
417 | rc = send_cmd(nl_sd, id, mypid, TASKSTATS_CMD_GET, | |
418 | cmd_type, &tid, sizeof(__u32)); | |
419 | PRINTF("Sent pid/tgid, retval %d\n", rc); | |
420 | if (rc < 0) { | |
d2f7bf13 | 421 | fprintf(stderr, "error sending tid/tgid cmd\n"); |
9e06d3f9 SN |
422 | goto done; |
423 | } | |
a3baf649 SN |
424 | } |
425 | ||
546040dc BS |
426 | if (containerset) { |
427 | cfd = open(containerpath, O_RDONLY); | |
428 | if (cfd < 0) { | |
429 | perror("error opening container file"); | |
430 | goto err; | |
431 | } | |
432 | rc = send_cmd(nl_sd, id, mypid, CGROUPSTATS_CMD_GET, | |
433 | CGROUPSTATS_CMD_ATTR_FD, &cfd, sizeof(__u32)); | |
434 | if (rc < 0) { | |
435 | perror("error sending cgroupstats command"); | |
436 | goto err; | |
437 | } | |
438 | } | |
65a67bd2 MM |
439 | if (!maskset && !tid && !containerset) { |
440 | usage(); | |
441 | goto err; | |
442 | } | |
546040dc | 443 | |
9e06d3f9 | 444 | do { |
9e06d3f9 SN |
445 | rep_len = recv(nl_sd, &msg, sizeof(msg), 0); |
446 | PRINTF("received %d bytes\n", rep_len); | |
a3baf649 | 447 | |
9e06d3f9 | 448 | if (rep_len < 0) { |
d2f7bf13 AM |
449 | fprintf(stderr, "nonfatal reply error: errno %d\n", |
450 | errno); | |
9e06d3f9 SN |
451 | continue; |
452 | } | |
453 | if (msg.n.nlmsg_type == NLMSG_ERROR || | |
454 | !NLMSG_OK((&msg.n), rep_len)) { | |
7d1bdca9 | 455 | struct nlmsgerr *err = NLMSG_DATA(&msg); |
d2f7bf13 AM |
456 | fprintf(stderr, "fatal reply error, errno %d\n", |
457 | err->error); | |
9e06d3f9 SN |
458 | goto done; |
459 | } | |
460 | ||
10e6f32b | 461 | PRINTF("nlmsghdr size=%zu, nlmsg_len=%d, rep_len=%d\n", |
9e06d3f9 SN |
462 | sizeof(struct nlmsghdr), msg.n.nlmsg_len, rep_len); |
463 | ||
464 | ||
465 | rep_len = GENLMSG_PAYLOAD(&msg.n); | |
466 | ||
467 | na = (struct nlattr *) GENLMSG_DATA(&msg); | |
468 | len = 0; | |
9e06d3f9 SN |
469 | while (len < rep_len) { |
470 | len += NLA_ALIGN(na->nla_len); | |
471 | switch (na->nla_type) { | |
472 | case TASKSTATS_TYPE_AGGR_TGID: | |
473 | /* Fall through */ | |
474 | case TASKSTATS_TYPE_AGGR_PID: | |
475 | aggr_len = NLA_PAYLOAD(na->nla_len); | |
476 | len2 = 0; | |
477 | /* For nested attributes, na follows */ | |
478 | na = (struct nlattr *) NLA_DATA(na); | |
479 | done = 0; | |
480 | while (len2 < aggr_len) { | |
481 | switch (na->nla_type) { | |
482 | case TASKSTATS_TYPE_PID: | |
483 | rtid = *(int *) NLA_DATA(na); | |
484 | if (print_delays) | |
485 | printf("PID\t%d\n", rtid); | |
486 | break; | |
487 | case TASKSTATS_TYPE_TGID: | |
488 | rtid = *(int *) NLA_DATA(na); | |
489 | if (print_delays) | |
490 | printf("TGID\t%d\n", rtid); | |
491 | break; | |
492 | case TASKSTATS_TYPE_STATS: | |
493 | count++; | |
494 | if (print_delays) | |
495 | print_delayacct((struct taskstats *) NLA_DATA(na)); | |
cf709844 AM |
496 | if (print_io_accounting) |
497 | print_ioacct((struct taskstats *) NLA_DATA(na)); | |
b663a79c MU |
498 | if (print_task_context_switch_counts) |
499 | task_context_switch_counts((struct taskstats *) NLA_DATA(na)); | |
9e06d3f9 SN |
500 | if (fd) { |
501 | if (write(fd, NLA_DATA(na), na->nla_len) < 0) { | |
502 | err(1,"write error\n"); | |
503 | } | |
504 | } | |
505 | if (!loop) | |
506 | goto done; | |
507 | break; | |
508 | default: | |
d2f7bf13 AM |
509 | fprintf(stderr, "Unknown nested" |
510 | " nla_type %d\n", | |
511 | na->nla_type); | |
9e06d3f9 SN |
512 | break; |
513 | } | |
514 | len2 += NLA_ALIGN(na->nla_len); | |
515 | na = (struct nlattr *) ((char *) na + len2); | |
516 | } | |
517 | break; | |
518 | ||
546040dc BS |
519 | case CGROUPSTATS_TYPE_CGROUP_STATS: |
520 | print_cgroupstats(NLA_DATA(na)); | |
521 | break; | |
9e06d3f9 | 522 | default: |
d2f7bf13 AM |
523 | fprintf(stderr, "Unknown nla_type %d\n", |
524 | na->nla_type); | |
4be2c95d | 525 | case TASKSTATS_TYPE_NULL: |
9e06d3f9 | 526 | break; |
a3baf649 | 527 | } |
9e06d3f9 | 528 | na = (struct nlattr *) (GENLMSG_DATA(&msg) + len); |
a3baf649 | 529 | } |
9e06d3f9 SN |
530 | } while (loop); |
531 | done: | |
532 | if (maskset) { | |
533 | rc = send_cmd(nl_sd, id, mypid, TASKSTATS_CMD_GET, | |
534 | TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK, | |
7d1bdca9 | 535 | &cpumask, strlen(cpumask) + 1); |
9e06d3f9 SN |
536 | printf("Sent deregister mask, retval %d\n", rc); |
537 | if (rc < 0) | |
538 | err(rc, "error sending deregister cpumask\n"); | |
a3baf649 | 539 | } |
9e06d3f9 SN |
540 | err: |
541 | close(nl_sd); | |
542 | if (fd) | |
543 | close(fd); | |
546040dc BS |
544 | if (cfd) |
545 | close(cfd); | |
9e06d3f9 | 546 | return 0; |
a3baf649 | 547 | } |