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