Remove systemd-bootchart

This commit rips out systemd-bootchart. It will be given a new home, outside
of the systemd repository. The code itself isn't actually specific to
systemd and can be used without systemd even, so let's put it somewhere
else.

1 files changed, 0 insertions, 555 deletions

diff --git a/src/bootchart/store.c b/src/bootchart/store.c
deleted file mode 100644
index 42cb8043ce..0000000000
--- a/src/bootchart/store.c
+++ /dev/null
@@ -1,555 +0,0 @@
-/***
-  This file is part of systemd.
-
-  Copyright (C) 2009-2013 Intel Corporation
-
-  Authors:
-    Auke Kok <auke-jan.h.kok@intel.com>
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
- ***/
-
-#include <dirent.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-
-#include "alloc-util.h"
-#include "bootchart.h"
-#include "cgroup-util.h"
-#include "dirent-util.h"
-#include "fd-util.h"
-#include "fileio.h"
-#include "parse-util.h"
-#include "store.h"
-#include "string-util.h"
-#include "strxcpyx.h"
-#include "time-util.h"
-#include "util.h"
-
-/*
- * Alloc a static 4k buffer for stdio - primarily used to increase
- * PSS buffering from the default 1k stdin buffer to reduce
- * read() overhead.
- */
-static char smaps_buf[4096];
-static int skip = 0;
-
-double gettime_ns(void) {
-        struct timespec n;
-
-        clock_gettime(CLOCK_MONOTONIC, &n);
-
-        return (n.tv_sec + (n.tv_nsec / (double) NSEC_PER_SEC));
-}
-
-static char *bufgetline(char *buf) {
-        char *c;
-
-        if (!buf)
-                return NULL;
-
-        c = strchr(buf, '\n');
-        if (c)
-                c++;
-
-        return c;
-}
-
-static int pid_cmdline_strscpy(int procfd, char *buffer, size_t buf_len, int pid) {
-        char filename[PATH_MAX];
-        _cleanup_close_ int fd = -1;
-        ssize_t n;
-
-        sprintf(filename, "%d/cmdline", pid);
-        fd = openat(procfd, filename, O_RDONLY|O_CLOEXEC);
-        if (fd < 0)
-                return -errno;
-
-        n = read(fd, buffer, buf_len-1);
-        if (n > 0) {
-                int i;
-                for (i = 0; i < n; i++)
-                        if (buffer[i] == '\0')
-                                buffer[i] = ' ';
-                buffer[n] = '\0';
-        }
-
-        return 0;
-}
-
-int log_sample(DIR *proc,
-               int sample,
-               struct ps_struct *ps_first,
-               struct list_sample_data **ptr,
-               int *pscount,
-               int *cpus) {
-
-        static int vmstat = -1;
-        _cleanup_free_ char *buf_schedstat = NULL;
-        char buf[4096];
-        char key[256];
-        char val[256];
-        char rt[256];
-        char wt[256];
-        char *m;
-        int r;
-        int c;
-        int p;
-        int mod;
-        static int e_fd = -1;
-        ssize_t s;
-        ssize_t n;
-        struct dirent *ent;
-        int fd;
-        struct list_sample_data *sampledata;
-        struct ps_sched_struct *ps_prev = NULL;
-        int procfd;
-        int taskfd = -1;
-
-        sampledata = *ptr;
-
-        procfd = dirfd(proc);
-        if (procfd < 0)
-                return -errno;
-
-        if (vmstat < 0) {
-                /* block stuff */
-                vmstat = openat(procfd, "vmstat", O_RDONLY|O_CLOEXEC);
-                if (vmstat < 0)
-                        return log_error_errno(errno, "Failed to open /proc/vmstat: %m");
-        }
-
-        n = pread(vmstat, buf, sizeof(buf) - 1, 0);
-        if (n <= 0) {
-                vmstat = safe_close(vmstat);
-                if (n < 0)
-                        return -errno;
-                return -ENODATA;
-        }
-
-        buf[n] = '\0';
-
-        m = buf;
-        while (m) {
-                if (sscanf(m, "%s %s", key, val) < 2)
-                        goto vmstat_next;
-                if (streq(key, "pgpgin"))
-                        sampledata->blockstat.bi = atoi(val);
-                if (streq(key, "pgpgout")) {
-                        sampledata->blockstat.bo = atoi(val);
-                        break;
-                }
-vmstat_next:
-                m = bufgetline(m);
-                if (!m)
-                        break;
-        }
-
-        /* Parse "/proc/schedstat" for overall CPU utilization */
-        r = read_full_file("/proc/schedstat", &buf_schedstat, NULL);
-        if (r < 0)
-            return log_error_errno(r, "Unable to read schedstat: %m");
-
-        m = buf_schedstat;
-        while (m) {
-                if (sscanf(m, "%s %*s %*s %*s %*s %*s %*s %s %s", key, rt, wt) < 3)
-                        goto schedstat_next;
-
-                if (strstr(key, "cpu")) {
-                        r = safe_atoi((const char*)(key+3), &c);
-                        if (r < 0 || c > MAXCPUS -1)
-                                /* Oops, we only have room for MAXCPUS data */
-                                break;
-                        sampledata->runtime[c] = atoll(rt);
-                        sampledata->waittime[c] = atoll(wt);
-
-                        if (c == *cpus)
-                                *cpus = c + 1;
-                }
-schedstat_next:
-                m = bufgetline(m);
-                if (!m)
-                        break;
-        }
-
-        if (arg_entropy) {
-                if (e_fd < 0) {
-                        e_fd = openat(procfd, "sys/kernel/random/entropy_avail", O_RDONLY|O_CLOEXEC);
-                        if (e_fd < 0)
-                                return log_error_errno(errno, "Failed to open /proc/sys/kernel/random/entropy_avail: %m");
-                }
-
-                n = pread(e_fd, buf, sizeof(buf) - 1, 0);
-                if (n <= 0) {
-                        e_fd = safe_close(e_fd);
-                } else {
-                        buf[n] = '\0';
-                        sampledata->entropy_avail = atoi(buf);
-                }
-        }
-
-        while ((ent = readdir(proc)) != NULL) {
-                char filename[PATH_MAX];
-                int pid;
-                struct ps_struct *ps;
-
-                if ((ent->d_name[0] < '0') || (ent->d_name[0] > '9'))
-                        continue;
-
-                pid = atoi(ent->d_name);
-
-                if (pid >= MAXPIDS)
-                        continue;
-
-                ps = ps_first;
-                while (ps->next_ps) {
-                        ps = ps->next_ps;
-                        if (ps->pid == pid)
-                                break;
-                }
-
-                /* end of our LL? then append a new record */
-                if (ps->pid != pid) {
-                        _cleanup_fclose_ FILE *st = NULL;
-                        char t[32];
-                        struct ps_struct *parent;
-
-                        ps->next_ps = new0(struct ps_struct, 1);
-                        if (!ps->next_ps)
-                                return log_oom();
-
-                        ps = ps->next_ps;
-                        ps->pid = pid;
-                        ps->sched = -1;
-                        ps->schedstat = -1;
-
-                        ps->sample = new0(struct ps_sched_struct, 1);
-                        if (!ps->sample)
-                                return log_oom();
-
-                        ps->sample->sampledata = sampledata;
-
-                        (*pscount)++;
-
-                        /* mark our first sample */
-                        ps->first = ps->last = ps->sample;
-                        ps->sample->runtime = atoll(rt);
-                        ps->sample->waittime = atoll(wt);
-
-                        /* get name, start time */
-                        if (ps->sched < 0) {
-                                sprintf(filename, "%d/sched", pid);
-                                ps->sched = openat(procfd, filename, O_RDONLY|O_CLOEXEC);
-                                if (ps->sched < 0)
-                                        continue;
-                        }
-
-                        s = pread(ps->sched, buf, sizeof(buf) - 1, 0);
-                        if (s <= 0) {
-                                ps->sched = safe_close(ps->sched);
-                                continue;
-                        }
-                        buf[s] = '\0';
-
-                        if (!sscanf(buf, "%s %*s %*s", key))
-                                continue;
-
-                        strscpy(ps->name, sizeof(ps->name), key);
-
-                        /* cmdline */
-                        if (arg_show_cmdline)
-                                pid_cmdline_strscpy(procfd, ps->name, sizeof(ps->name), pid);
-
-                        /* discard line 2 */
-                        m = bufgetline(buf);
-                        if (!m)
-                                continue;
-
-                        m = bufgetline(m);
-                        if (!m)
-                                continue;
-
-                        if (!sscanf(m, "%*s %*s %s", t))
-                                continue;
-
-                        r = safe_atod(t, &ps->starttime);
-                        if (r < 0)
-                                continue;
-
-                        ps->starttime /= 1000.0;
-
-                        if (arg_show_cgroup)
-                                /* if this fails, that's OK */
-                                cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER,
-                                                ps->pid, &ps->cgroup);
-
-                        /* ppid */
-                        sprintf(filename, "%d/stat", pid);
-                        fd = openat(procfd, filename, O_RDONLY|O_CLOEXEC);
-                        if (fd < 0)
-                                continue;
-
-                        st = fdopen(fd, "re");
-                        if (!st) {
-                                close(fd);
-                                continue;
-                        }
-
-                        if (!fscanf(st, "%*s %*s %*s %i", &p))
-                                continue;
-
-                        ps->ppid = p;
-
-                        /*
-                         * setup child pointers
-                         *
-                         * these are used to paint the tree coherently later
-                         * each parent has a LL of children, and a LL of siblings
-                         */
-                        if (pid == 1)
-                                continue; /* nothing to do for init atm */
-
-                        /* kthreadd has ppid=0, which breaks our tree ordering */
-                        if (ps->ppid == 0)
-                                ps->ppid = 1;
-
-                        parent = ps_first;
-                        while ((parent->next_ps && parent->pid != ps->ppid))
-                                parent = parent->next_ps;
-
-                        if (parent->pid != ps->ppid) {
-                                /* orphan */
-                                ps->ppid = 1;
-                                parent = ps_first->next_ps;
-                        }
-
-                        ps->parent = parent;
-
-                        if (!parent->children) {
-                                /* it's the first child */
-                                parent->children = ps;
-                        } else {
-                                /* walk all children and append */
-                                struct ps_struct *children;
-                                children = parent->children;
-                                while (children->next)
-                                        children = children->next;
-
-                                children->next = ps;
-                        }
-                }
-
-                /* else -> found pid, append data in ps */
-
-                /* below here is all continuous logging parts - we get here on every
-                 * iteration */
-
-                /* rt, wt */
-                if (ps->schedstat < 0) {
-                        sprintf(filename, "%d/schedstat", pid);
-                        ps->schedstat = openat(procfd, filename, O_RDONLY|O_CLOEXEC);
-                        if (ps->schedstat < 0)
-                                continue;
-                }
-
-                s = pread(ps->schedstat, buf, sizeof(buf) - 1, 0);
-                if (s <= 0) {
-                        /* clean up our file descriptors - assume that the process exited */
-                        close(ps->schedstat);
-                        ps->schedstat = -1;
-                        ps->sched = safe_close(ps->sched);
-                        continue;
-                }
-
-                buf[s] = '\0';
-
-                if (!sscanf(buf, "%s %s %*s", rt, wt))
-                        continue;
-
-                ps->sample->next = new0(struct ps_sched_struct, 1);
-                if (!ps->sample->next)
-                        return log_oom();
-
-                ps->sample->next->prev = ps->sample;
-                ps->sample = ps->sample->next;
-                ps->last = ps->sample;
-                ps->sample->runtime = atoll(rt);
-                ps->sample->waittime = atoll(wt);
-                ps->sample->sampledata = sampledata;
-                ps->sample->ps_new = ps;
-                if (ps_prev)
-                        ps_prev->cross = ps->sample;
-
-                ps_prev = ps->sample;
-                ps->total = (ps->last->runtime - ps->first->runtime)
-                            / 1000000000.0;
-
-                /* Take into account CPU runtime/waittime spent in non-main threads of the process
-                 * by parsing "/proc/[pid]/task/[tid]/schedstat" for all [tid] != [pid]
-                 * See https://github.com/systemd/systemd/issues/139
-                 */
-
-                /* Browse directory "/proc/[pid]/task" to know the thread ids of process [pid] */
-                snprintf(filename, sizeof(filename), PID_FMT "/task", pid);
-                taskfd = openat(procfd, filename, O_RDONLY|O_DIRECTORY|O_CLOEXEC);
-                if (taskfd >= 0) {
-                        _cleanup_closedir_ DIR *taskdir = NULL;
-
-                        taskdir = fdopendir(taskfd);
-                        if (!taskdir) {
-                                safe_close(taskfd);
-                                return -errno;
-                        }
-                        FOREACH_DIRENT(ent, taskdir, break) {
-                                int tid = -1;
-                                _cleanup_close_ int tid_schedstat = -1;
-                                long long delta_rt;
-                                long long delta_wt;
-
-                                if ((ent->d_name[0] < '0') || (ent->d_name[0] > '9'))
-                                        continue;
-
-                                /* Skip main thread as it was already accounted */
-                                r = safe_atoi(ent->d_name, &tid);
-                                if (r < 0 || tid == pid)
-                                        continue;
-
-                                /* Parse "/proc/[pid]/task/[tid]/schedstat" */
-                                snprintf(filename, sizeof(filename), PID_FMT "/schedstat", tid);
-                                tid_schedstat = openat(taskfd, filename, O_RDONLY|O_CLOEXEC);
-
-                                if (tid_schedstat == -1)
-                                        continue;
-
-                                s = pread(tid_schedstat, buf, sizeof(buf) - 1, 0);
-                                if (s <= 0)
-                                        continue;
-                                buf[s] = '\0';
-
-                                if (!sscanf(buf, "%s %s %*s", rt, wt))
-                                        continue;
-
-                                r = safe_atolli(rt, &delta_rt);
-                                if (r < 0)
-                                    continue;
-                                r = safe_atolli(rt, &delta_wt);
-                                if (r < 0)
-                                    continue;
-                                ps->sample->runtime  += delta_rt;
-                                ps->sample->waittime += delta_wt;
-                        }
-                }
-
-                if (!arg_pss)
-                        goto catch_rename;
-
-                /* Pss */
-                if (!ps->smaps) {
-                        sprintf(filename, "%d/smaps", pid);
-                        fd = openat(procfd, filename, O_RDONLY|O_CLOEXEC);
-                        if (fd < 0)
-                                continue;
-                        ps->smaps = fdopen(fd, "re");
-                        if (!ps->smaps) {
-                                close(fd);
-                                continue;
-                        }
-                        setvbuf(ps->smaps, smaps_buf, _IOFBF, sizeof(smaps_buf));
-                } else {
-                        rewind(ps->smaps);
-                }
-
-                /* test to see if we need to skip another field */
-                if (skip == 0) {
-                        if (fgets(buf, sizeof(buf), ps->smaps) == NULL) {
-                                continue;
-                        }
-                        if (fread(buf, 1, 28 * 15, ps->smaps) != (28 * 15)) {
-                                continue;
-                        }
-                        if (buf[392] == 'V') {
-                                skip = 2;
-                        }
-                        else {
-                                skip = 1;
-                        }
-                        rewind(ps->smaps);
-                }
-
-                while (1) {
-                        int pss_kb;
-
-                        /* skip one line, this contains the object mapped. */
-                        if (fgets(buf, sizeof(buf), ps->smaps) == NULL) {
-                                break;
-                        }
-                        /* then there's a 28 char 14 line block */
-                        if (fread(buf, 1, 28 * 14, ps->smaps) != 28 * 14) {
-                                break;
-                        }
-                        pss_kb = atoi(&buf[61]);
-                        ps->sample->pss += pss_kb;
-
-                        /* skip one more line if this is a newer kernel */
-                        if (skip == 2) {
-                               if (fgets(buf, sizeof(buf), ps->smaps) == NULL)
-                                       break;
-                        }
-                }
-
-                if (ps->sample->pss > ps->pss_max)
-                        ps->pss_max = ps->sample->pss;
-
-catch_rename:
-                /* catch process rename, try to randomize time */
-                mod = (arg_hz < 4.0) ? 4.0 : (arg_hz / 4.0);
-                if (((sample - ps->pid) + pid) % (int)(mod) == 0) {
-
-                        /* re-fetch name */
-                        /* get name, start time */
-                        if (ps->sched < 0) {
-                                sprintf(filename, "%d/sched", pid);
-                                ps->sched = openat(procfd, filename, O_RDONLY|O_CLOEXEC);
-                                if (ps->sched < 0)
-                                        continue;
-                        }
-
-                        s = pread(ps->sched, buf, sizeof(buf) - 1, 0);
-                        if (s <= 0) {
-                                /* clean up file descriptors */
-                                ps->sched = safe_close(ps->sched);
-                                ps->schedstat = safe_close(ps->schedstat);
-                                continue;
-                        }
-
-                        buf[s] = '\0';
-
-                        if (!sscanf(buf, "%s %*s %*s", key))
-                                continue;
-
-                        strscpy(ps->name, sizeof(ps->name), key);
-
-                        /* cmdline */
-                        if (arg_show_cmdline)
-                                pid_cmdline_strscpy(procfd, ps->name, sizeof(ps->name), pid);
-                }
-        }
-
-        return 0;
-}