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tools: move accounting tool from Documentation
Move accounting tool to tools and remove it from Documentation Makefile. Update location information for this tool. Create a new Makefile to build accounting. It can be built from top level directory or from accounting directory: Run make -C tools/accounting or cd tools/accounting; make Acked-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
This commit is contained in:
Shuah Khan
1
Documentation/accounting/.gitignore
vendored
1
Documentation/accounting/.gitignore
vendored
@@ -1 +0,0 @@
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getdelays
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@@ -1,7 +0,0 @@
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# List of programs to build
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hostprogs-y := getdelays
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# Tell kbuild to always build the programs
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always := $(hostprogs-y)
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HOSTCFLAGS_getdelays.o += -I$(objtree)/usr/include
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@@ -54,9 +54,9 @@ are sent to userspace without requiring a command. If it is the last exiting
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task of a thread group, the per-tgid statistics are also sent. More details
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are given in the taskstats interface description.
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The getdelays.c userspace utility in this directory allows simple commands to
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be run and the corresponding delay statistics to be displayed. It also serves
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as an example of using the taskstats interface.
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The getdelays.c userspace utility in tools/accounting directory allows simple
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commands to be run and the corresponding delay statistics to be displayed. It
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also serves as an example of using the taskstats interface.
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Usage
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-----
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@@ -1,550 +0,0 @@
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/* getdelays.c
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*
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* Utility to get per-pid and per-tgid delay accounting statistics
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* Also illustrates usage of the taskstats interface
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*
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* Copyright (C) Shailabh Nagar, IBM Corp. 2005
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* Copyright (C) Balbir Singh, IBM Corp. 2006
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* Copyright (c) Jay Lan, SGI. 2006
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*
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* Compile with
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* gcc -I/usr/src/linux/include getdelays.c -o getdelays
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <unistd.h>
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#include <poll.h>
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#include <string.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/socket.h>
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#include <sys/wait.h>
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#include <signal.h>
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#include <linux/genetlink.h>
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#include <linux/taskstats.h>
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#include <linux/cgroupstats.h>
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/*
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* Generic macros for dealing with netlink sockets. Might be duplicated
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* elsewhere. It is recommended that commercial grade applications use
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* libnl or libnetlink and use the interfaces provided by the library
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*/
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#define GENLMSG_DATA(glh) ((void *)(NLMSG_DATA(glh) + GENL_HDRLEN))
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#define GENLMSG_PAYLOAD(glh) (NLMSG_PAYLOAD(glh, 0) - GENL_HDRLEN)
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#define NLA_DATA(na) ((void *)((char*)(na) + NLA_HDRLEN))
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#define NLA_PAYLOAD(len) (len - NLA_HDRLEN)
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#define err(code, fmt, arg...) \
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do { \
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fprintf(stderr, fmt, ##arg); \
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exit(code); \
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} while (0)
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int done;
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int rcvbufsz;
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char name[100];
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int dbg;
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int print_delays;
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int print_io_accounting;
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int print_task_context_switch_counts;
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#define PRINTF(fmt, arg...) { \
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if (dbg) { \
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printf(fmt, ##arg); \
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} \
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}
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/* Maximum size of response requested or message sent */
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#define MAX_MSG_SIZE 1024
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/* Maximum number of cpus expected to be specified in a cpumask */
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#define MAX_CPUS 32
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struct msgtemplate {
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struct nlmsghdr n;
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struct genlmsghdr g;
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char buf[MAX_MSG_SIZE];
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};
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char cpumask[100+6*MAX_CPUS];
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static void usage(void)
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{
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fprintf(stderr, "getdelays [-dilv] [-w logfile] [-r bufsize] "
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"[-m cpumask] [-t tgid] [-p pid]\n");
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fprintf(stderr, " -d: print delayacct stats\n");
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fprintf(stderr, " -i: print IO accounting (works only with -p)\n");
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fprintf(stderr, " -l: listen forever\n");
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fprintf(stderr, " -v: debug on\n");
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fprintf(stderr, " -C: container path\n");
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}
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/*
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* Create a raw netlink socket and bind
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*/
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static int create_nl_socket(int protocol)
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{
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int fd;
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struct sockaddr_nl local;
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fd = socket(AF_NETLINK, SOCK_RAW, protocol);
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if (fd < 0)
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return -1;
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if (rcvbufsz)
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if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF,
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&rcvbufsz, sizeof(rcvbufsz)) < 0) {
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fprintf(stderr, "Unable to set socket rcv buf size to %d\n",
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rcvbufsz);
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goto error;
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}
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memset(&local, 0, sizeof(local));
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local.nl_family = AF_NETLINK;
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if (bind(fd, (struct sockaddr *) &local, sizeof(local)) < 0)
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goto error;
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return fd;
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error:
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close(fd);
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return -1;
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}
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static int send_cmd(int sd, __u16 nlmsg_type, __u32 nlmsg_pid,
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__u8 genl_cmd, __u16 nla_type,
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void *nla_data, int nla_len)
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{
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struct nlattr *na;
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struct sockaddr_nl nladdr;
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int r, buflen;
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char *buf;
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struct msgtemplate msg;
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msg.n.nlmsg_len = NLMSG_LENGTH(GENL_HDRLEN);
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msg.n.nlmsg_type = nlmsg_type;
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msg.n.nlmsg_flags = NLM_F_REQUEST;
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msg.n.nlmsg_seq = 0;
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msg.n.nlmsg_pid = nlmsg_pid;
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msg.g.cmd = genl_cmd;
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msg.g.version = 0x1;
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na = (struct nlattr *) GENLMSG_DATA(&msg);
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na->nla_type = nla_type;
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na->nla_len = nla_len + 1 + NLA_HDRLEN;
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memcpy(NLA_DATA(na), nla_data, nla_len);
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msg.n.nlmsg_len += NLMSG_ALIGN(na->nla_len);
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buf = (char *) &msg;
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buflen = msg.n.nlmsg_len ;
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memset(&nladdr, 0, sizeof(nladdr));
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nladdr.nl_family = AF_NETLINK;
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while ((r = sendto(sd, buf, buflen, 0, (struct sockaddr *) &nladdr,
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sizeof(nladdr))) < buflen) {
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if (r > 0) {
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buf += r;
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buflen -= r;
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} else if (errno != EAGAIN)
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return -1;
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}
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return 0;
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}
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/*
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* Probe the controller in genetlink to find the family id
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* for the TASKSTATS family
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*/
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static int get_family_id(int sd)
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{
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struct {
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struct nlmsghdr n;
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struct genlmsghdr g;
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char buf[256];
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} ans;
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int id = 0, rc;
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struct nlattr *na;
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int rep_len;
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strcpy(name, TASKSTATS_GENL_NAME);
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rc = send_cmd(sd, GENL_ID_CTRL, getpid(), CTRL_CMD_GETFAMILY,
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CTRL_ATTR_FAMILY_NAME, (void *)name,
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strlen(TASKSTATS_GENL_NAME)+1);
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if (rc < 0)
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return 0; /* sendto() failure? */
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rep_len = recv(sd, &ans, sizeof(ans), 0);
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if (ans.n.nlmsg_type == NLMSG_ERROR ||
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(rep_len < 0) || !NLMSG_OK((&ans.n), rep_len))
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return 0;
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na = (struct nlattr *) GENLMSG_DATA(&ans);
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na = (struct nlattr *) ((char *) na + NLA_ALIGN(na->nla_len));
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if (na->nla_type == CTRL_ATTR_FAMILY_ID) {
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id = *(__u16 *) NLA_DATA(na);
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}
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return id;
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}
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#define average_ms(t, c) (t / 1000000ULL / (c ? c : 1))
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static void print_delayacct(struct taskstats *t)
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{
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printf("\n\nCPU %15s%15s%15s%15s%15s\n"
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" %15llu%15llu%15llu%15llu%15.3fms\n"
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"IO %15s%15s%15s\n"
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" %15llu%15llu%15llums\n"
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"SWAP %15s%15s%15s\n"
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" %15llu%15llu%15llums\n"
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"RECLAIM %12s%15s%15s\n"
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" %15llu%15llu%15llums\n",
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"count", "real total", "virtual total",
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"delay total", "delay average",
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(unsigned long long)t->cpu_count,
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(unsigned long long)t->cpu_run_real_total,
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(unsigned long long)t->cpu_run_virtual_total,
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(unsigned long long)t->cpu_delay_total,
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average_ms((double)t->cpu_delay_total, t->cpu_count),
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"count", "delay total", "delay average",
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(unsigned long long)t->blkio_count,
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(unsigned long long)t->blkio_delay_total,
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average_ms(t->blkio_delay_total, t->blkio_count),
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"count", "delay total", "delay average",
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(unsigned long long)t->swapin_count,
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(unsigned long long)t->swapin_delay_total,
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average_ms(t->swapin_delay_total, t->swapin_count),
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"count", "delay total", "delay average",
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(unsigned long long)t->freepages_count,
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(unsigned long long)t->freepages_delay_total,
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average_ms(t->freepages_delay_total, t->freepages_count));
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}
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static void task_context_switch_counts(struct taskstats *t)
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{
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printf("\n\nTask %15s%15s\n"
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" %15llu%15llu\n",
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"voluntary", "nonvoluntary",
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(unsigned long long)t->nvcsw, (unsigned long long)t->nivcsw);
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}
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static void print_cgroupstats(struct cgroupstats *c)
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{
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printf("sleeping %llu, blocked %llu, running %llu, stopped %llu, "
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"uninterruptible %llu\n", (unsigned long long)c->nr_sleeping,
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(unsigned long long)c->nr_io_wait,
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(unsigned long long)c->nr_running,
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(unsigned long long)c->nr_stopped,
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(unsigned long long)c->nr_uninterruptible);
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}
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static void print_ioacct(struct taskstats *t)
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{
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printf("%s: read=%llu, write=%llu, cancelled_write=%llu\n",
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t->ac_comm,
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(unsigned long long)t->read_bytes,
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(unsigned long long)t->write_bytes,
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(unsigned long long)t->cancelled_write_bytes);
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}
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int main(int argc, char *argv[])
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{
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int c, rc, rep_len, aggr_len, len2;
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int cmd_type = TASKSTATS_CMD_ATTR_UNSPEC;
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__u16 id;
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__u32 mypid;
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struct nlattr *na;
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int nl_sd = -1;
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int len = 0;
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pid_t tid = 0;
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pid_t rtid = 0;
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int fd = 0;
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int count = 0;
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int write_file = 0;
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int maskset = 0;
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char *logfile = NULL;
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int loop = 0;
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int containerset = 0;
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char *containerpath = NULL;
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int cfd = 0;
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||||
int forking = 0;
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||||
sigset_t sigset;
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|
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struct msgtemplate msg;
|
||||
|
||||
while (!forking) {
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c = getopt(argc, argv, "qdiw:r:m:t:p:vlC:c:");
|
||||
if (c < 0)
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||||
break;
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||||
|
||||
switch (c) {
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||||
case 'd':
|
||||
printf("print delayacct stats ON\n");
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||||
print_delays = 1;
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||||
break;
|
||||
case 'i':
|
||||
printf("printing IO accounting\n");
|
||||
print_io_accounting = 1;
|
||||
break;
|
||||
case 'q':
|
||||
printf("printing task/process context switch rates\n");
|
||||
print_task_context_switch_counts = 1;
|
||||
break;
|
||||
case 'C':
|
||||
containerset = 1;
|
||||
containerpath = optarg;
|
||||
break;
|
||||
case 'w':
|
||||
logfile = strdup(optarg);
|
||||
printf("write to file %s\n", logfile);
|
||||
write_file = 1;
|
||||
break;
|
||||
case 'r':
|
||||
rcvbufsz = atoi(optarg);
|
||||
printf("receive buf size %d\n", rcvbufsz);
|
||||
if (rcvbufsz < 0)
|
||||
err(1, "Invalid rcv buf size\n");
|
||||
break;
|
||||
case 'm':
|
||||
strncpy(cpumask, optarg, sizeof(cpumask));
|
||||
cpumask[sizeof(cpumask) - 1] = '\0';
|
||||
maskset = 1;
|
||||
printf("cpumask %s maskset %d\n", cpumask, maskset);
|
||||
break;
|
||||
case 't':
|
||||
tid = atoi(optarg);
|
||||
if (!tid)
|
||||
err(1, "Invalid tgid\n");
|
||||
cmd_type = TASKSTATS_CMD_ATTR_TGID;
|
||||
break;
|
||||
case 'p':
|
||||
tid = atoi(optarg);
|
||||
if (!tid)
|
||||
err(1, "Invalid pid\n");
|
||||
cmd_type = TASKSTATS_CMD_ATTR_PID;
|
||||
break;
|
||||
case 'c':
|
||||
|
||||
/* Block SIGCHLD for sigwait() later */
|
||||
if (sigemptyset(&sigset) == -1)
|
||||
err(1, "Failed to empty sigset");
|
||||
if (sigaddset(&sigset, SIGCHLD))
|
||||
err(1, "Failed to set sigchld in sigset");
|
||||
sigprocmask(SIG_BLOCK, &sigset, NULL);
|
||||
|
||||
/* fork/exec a child */
|
||||
tid = fork();
|
||||
if (tid < 0)
|
||||
err(1, "Fork failed\n");
|
||||
if (tid == 0)
|
||||
if (execvp(argv[optind - 1],
|
||||
&argv[optind - 1]) < 0)
|
||||
exit(-1);
|
||||
|
||||
/* Set the command type and avoid further processing */
|
||||
cmd_type = TASKSTATS_CMD_ATTR_PID;
|
||||
forking = 1;
|
||||
break;
|
||||
case 'v':
|
||||
printf("debug on\n");
|
||||
dbg = 1;
|
||||
break;
|
||||
case 'l':
|
||||
printf("listen forever\n");
|
||||
loop = 1;
|
||||
break;
|
||||
default:
|
||||
usage();
|
||||
exit(-1);
|
||||
}
|
||||
}
|
||||
|
||||
if (write_file) {
|
||||
fd = open(logfile, O_WRONLY | O_CREAT | O_TRUNC,
|
||||
S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
|
||||
if (fd == -1) {
|
||||
perror("Cannot open output file\n");
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
nl_sd = create_nl_socket(NETLINK_GENERIC);
|
||||
if (nl_sd < 0)
|
||||
err(1, "error creating Netlink socket\n");
|
||||
|
||||
|
||||
mypid = getpid();
|
||||
id = get_family_id(nl_sd);
|
||||
if (!id) {
|
||||
fprintf(stderr, "Error getting family id, errno %d\n", errno);
|
||||
goto err;
|
||||
}
|
||||
PRINTF("family id %d\n", id);
|
||||
|
||||
if (maskset) {
|
||||
rc = send_cmd(nl_sd, id, mypid, TASKSTATS_CMD_GET,
|
||||
TASKSTATS_CMD_ATTR_REGISTER_CPUMASK,
|
||||
&cpumask, strlen(cpumask) + 1);
|
||||
PRINTF("Sent register cpumask, retval %d\n", rc);
|
||||
if (rc < 0) {
|
||||
fprintf(stderr, "error sending register cpumask\n");
|
||||
goto err;
|
||||
}
|
||||
}
|
||||
|
||||
if (tid && containerset) {
|
||||
fprintf(stderr, "Select either -t or -C, not both\n");
|
||||
goto err;
|
||||
}
|
||||
|
||||
/*
|
||||
* If we forked a child, wait for it to exit. Cannot use waitpid()
|
||||
* as all the delicious data would be reaped as part of the wait
|
||||
*/
|
||||
if (tid && forking) {
|
||||
int sig_received;
|
||||
sigwait(&sigset, &sig_received);
|
||||
}
|
||||
|
||||
if (tid) {
|
||||
rc = send_cmd(nl_sd, id, mypid, TASKSTATS_CMD_GET,
|
||||
cmd_type, &tid, sizeof(__u32));
|
||||
PRINTF("Sent pid/tgid, retval %d\n", rc);
|
||||
if (rc < 0) {
|
||||
fprintf(stderr, "error sending tid/tgid cmd\n");
|
||||
goto done;
|
||||
}
|
||||
}
|
||||
|
||||
if (containerset) {
|
||||
cfd = open(containerpath, O_RDONLY);
|
||||
if (cfd < 0) {
|
||||
perror("error opening container file");
|
||||
goto err;
|
||||
}
|
||||
rc = send_cmd(nl_sd, id, mypid, CGROUPSTATS_CMD_GET,
|
||||
CGROUPSTATS_CMD_ATTR_FD, &cfd, sizeof(__u32));
|
||||
if (rc < 0) {
|
||||
perror("error sending cgroupstats command");
|
||||
goto err;
|
||||
}
|
||||
}
|
||||
if (!maskset && !tid && !containerset) {
|
||||
usage();
|
||||
goto err;
|
||||
}
|
||||
|
||||
do {
|
||||
rep_len = recv(nl_sd, &msg, sizeof(msg), 0);
|
||||
PRINTF("received %d bytes\n", rep_len);
|
||||
|
||||
if (rep_len < 0) {
|
||||
fprintf(stderr, "nonfatal reply error: errno %d\n",
|
||||
errno);
|
||||
continue;
|
||||
}
|
||||
if (msg.n.nlmsg_type == NLMSG_ERROR ||
|
||||
!NLMSG_OK((&msg.n), rep_len)) {
|
||||
struct nlmsgerr *err = NLMSG_DATA(&msg);
|
||||
fprintf(stderr, "fatal reply error, errno %d\n",
|
||||
err->error);
|
||||
goto done;
|
||||
}
|
||||
|
||||
PRINTF("nlmsghdr size=%zu, nlmsg_len=%d, rep_len=%d\n",
|
||||
sizeof(struct nlmsghdr), msg.n.nlmsg_len, rep_len);
|
||||
|
||||
|
||||
rep_len = GENLMSG_PAYLOAD(&msg.n);
|
||||
|
||||
na = (struct nlattr *) GENLMSG_DATA(&msg);
|
||||
len = 0;
|
||||
while (len < rep_len) {
|
||||
len += NLA_ALIGN(na->nla_len);
|
||||
switch (na->nla_type) {
|
||||
case TASKSTATS_TYPE_AGGR_TGID:
|
||||
/* Fall through */
|
||||
case TASKSTATS_TYPE_AGGR_PID:
|
||||
aggr_len = NLA_PAYLOAD(na->nla_len);
|
||||
len2 = 0;
|
||||
/* For nested attributes, na follows */
|
||||
na = (struct nlattr *) NLA_DATA(na);
|
||||
done = 0;
|
||||
while (len2 < aggr_len) {
|
||||
switch (na->nla_type) {
|
||||
case TASKSTATS_TYPE_PID:
|
||||
rtid = *(int *) NLA_DATA(na);
|
||||
if (print_delays)
|
||||
printf("PID\t%d\n", rtid);
|
||||
break;
|
||||
case TASKSTATS_TYPE_TGID:
|
||||
rtid = *(int *) NLA_DATA(na);
|
||||
if (print_delays)
|
||||
printf("TGID\t%d\n", rtid);
|
||||
break;
|
||||
case TASKSTATS_TYPE_STATS:
|
||||
count++;
|
||||
if (print_delays)
|
||||
print_delayacct((struct taskstats *) NLA_DATA(na));
|
||||
if (print_io_accounting)
|
||||
print_ioacct((struct taskstats *) NLA_DATA(na));
|
||||
if (print_task_context_switch_counts)
|
||||
task_context_switch_counts((struct taskstats *) NLA_DATA(na));
|
||||
if (fd) {
|
||||
if (write(fd, NLA_DATA(na), na->nla_len) < 0) {
|
||||
err(1,"write error\n");
|
||||
}
|
||||
}
|
||||
if (!loop)
|
||||
goto done;
|
||||
break;
|
||||
case TASKSTATS_TYPE_NULL:
|
||||
break;
|
||||
default:
|
||||
fprintf(stderr, "Unknown nested"
|
||||
" nla_type %d\n",
|
||||
na->nla_type);
|
||||
break;
|
||||
}
|
||||
len2 += NLA_ALIGN(na->nla_len);
|
||||
na = (struct nlattr *)((char *)na +
|
||||
NLA_ALIGN(na->nla_len));
|
||||
}
|
||||
break;
|
||||
|
||||
case CGROUPSTATS_TYPE_CGROUP_STATS:
|
||||
print_cgroupstats(NLA_DATA(na));
|
||||
break;
|
||||
default:
|
||||
fprintf(stderr, "Unknown nla_type %d\n",
|
||||
na->nla_type);
|
||||
case TASKSTATS_TYPE_NULL:
|
||||
break;
|
||||
}
|
||||
na = (struct nlattr *) (GENLMSG_DATA(&msg) + len);
|
||||
}
|
||||
} while (loop);
|
||||
done:
|
||||
if (maskset) {
|
||||
rc = send_cmd(nl_sd, id, mypid, TASKSTATS_CMD_GET,
|
||||
TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK,
|
||||
&cpumask, strlen(cpumask) + 1);
|
||||
printf("Sent deregister mask, retval %d\n", rc);
|
||||
if (rc < 0)
|
||||
err(rc, "error sending deregister cpumask\n");
|
||||
}
|
||||
err:
|
||||
close(nl_sd);
|
||||
if (fd)
|
||||
close(fd);
|
||||
if (cfd)
|
||||
close(cfd);
|
||||
return 0;
|
||||
}
|
||||
Reference in New Issue
Block a user