X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=tools%2Fperf%2Fbuiltin-record.c;h=b7e15a1b1ec2d29a9e03d7bb417a51f76f34c532;hb=d8f66248d6f25f7c935cc5307c43bf394db07272;hp=a4be453fc8a92e3059fabb1a680ac008fe5569b9;hpb=1fd18a871a0761633d02d0536ecb4a311d92a3d3;p=mv-sheeva.git diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index a4be453fc8a..b7e15a1b1ec 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -17,55 +17,53 @@ #include "util/header.h" #include "util/event.h" #include "util/debug.h" -#include "util/trace-event.h" +#include "util/session.h" +#include "util/symbol.h" #include #include -#define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a)-1) -#define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask)) - static int fd[MAX_NR_CPUS][MAX_COUNTERS]; -static long default_interval = 100000; +static long default_interval = 0; -static int nr_cpus = 0; +static int nr_cpus = 0; static unsigned int page_size; -static unsigned int mmap_pages = 128; -static int freq = 0; +static unsigned int mmap_pages = 128; +static int freq = 1000; static int output; static const char *output_name = "perf.data"; -static int group = 0; -static unsigned int realtime_prio = 0; -static int raw_samples = 0; -static int system_wide = 0; -static int profile_cpu = -1; -static pid_t target_pid = -1; -static pid_t child_pid = -1; -static int inherit = 1; -static int force = 0; -static int append_file = 0; -static int call_graph = 0; -static int inherit_stat = 0; -static int no_samples = 0; -static int sample_address = 0; -static int multiplex = 0; -static int multiplex_fd = -1; - -static long samples; +static int group = 0; +static unsigned int realtime_prio = 0; +static int raw_samples = 0; +static int system_wide = 0; +static int profile_cpu = -1; +static pid_t target_pid = -1; +static pid_t child_pid = -1; +static int inherit = 1; +static int force = 0; +static int append_file = 0; +static int call_graph = 0; +static int inherit_stat = 0; +static int no_samples = 0; +static int sample_address = 0; +static int multiplex = 0; +static int multiplex_fd = -1; + +static long samples = 0; static struct timeval last_read; static struct timeval this_read; -static u64 bytes_written; +static u64 bytes_written = 0; static struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS]; -static int nr_poll; -static int nr_cpu; +static int nr_poll = 0; +static int nr_cpu = 0; -static int file_new = 1; +static int file_new = 1; -struct perf_header *header; +static struct perf_session *session; struct mmap_data { int counter; @@ -113,6 +111,25 @@ static void write_output(void *buf, size_t size) } } +static void write_event(event_t *buf, size_t size) +{ + /* + * Add it to the list of DSOs, so that when we finish this + * record session we can pick the available build-ids. + */ + if (buf->header.type == PERF_RECORD_MMAP) + dsos__findnew(buf->mmap.filename); + + write_output(buf, size); +} + +static int process_synthesized_event(event_t *event, + struct perf_session *self __used) +{ + write_event(event, event->header.size); + return 0; +} + static void mmap_read(struct mmap_data *md) { unsigned int head = mmap_read_head(md); @@ -161,14 +178,14 @@ static void mmap_read(struct mmap_data *md) size = md->mask + 1 - (old & md->mask); old += size; - write_output(buf, size); + write_event(buf, size); } buf = &data[old & md->mask]; size = head - old; old += size; - write_output(buf, size); + write_event(buf, size); md->prev = old; mmap_write_tail(md, old); @@ -195,179 +212,21 @@ static void sig_atexit(void) kill(getpid(), signr); } -static pid_t pid_synthesize_comm_event(pid_t pid, int full) -{ - struct comm_event comm_ev; - char filename[PATH_MAX]; - char bf[BUFSIZ]; - FILE *fp; - size_t size = 0; - DIR *tasks; - struct dirent dirent, *next; - pid_t tgid = 0; - - snprintf(filename, sizeof(filename), "/proc/%d/status", pid); - - fp = fopen(filename, "r"); - if (fp == NULL) { - /* - * We raced with a task exiting - just return: - */ - if (verbose) - fprintf(stderr, "couldn't open %s\n", filename); - return 0; - } - - memset(&comm_ev, 0, sizeof(comm_ev)); - while (!comm_ev.comm[0] || !comm_ev.pid) { - if (fgets(bf, sizeof(bf), fp) == NULL) - goto out_failure; - - if (memcmp(bf, "Name:", 5) == 0) { - char *name = bf + 5; - while (*name && isspace(*name)) - ++name; - size = strlen(name) - 1; - memcpy(comm_ev.comm, name, size++); - } else if (memcmp(bf, "Tgid:", 5) == 0) { - char *tgids = bf + 5; - while (*tgids && isspace(*tgids)) - ++tgids; - tgid = comm_ev.pid = atoi(tgids); - } - } - - comm_ev.header.type = PERF_RECORD_COMM; - size = ALIGN(size, sizeof(u64)); - comm_ev.header.size = sizeof(comm_ev) - (sizeof(comm_ev.comm) - size); - - if (!full) { - comm_ev.tid = pid; - - write_output(&comm_ev, comm_ev.header.size); - goto out_fclose; - } - - snprintf(filename, sizeof(filename), "/proc/%d/task", pid); - - tasks = opendir(filename); - while (!readdir_r(tasks, &dirent, &next) && next) { - char *end; - pid = strtol(dirent.d_name, &end, 10); - if (*end) - continue; - - comm_ev.tid = pid; - - write_output(&comm_ev, comm_ev.header.size); - } - closedir(tasks); - -out_fclose: - fclose(fp); - return tgid; - -out_failure: - fprintf(stderr, "couldn't get COMM and pgid, malformed %s\n", - filename); - exit(EXIT_FAILURE); -} - -static void pid_synthesize_mmap_samples(pid_t pid, pid_t tgid) -{ - char filename[PATH_MAX]; - FILE *fp; - - snprintf(filename, sizeof(filename), "/proc/%d/maps", pid); - - fp = fopen(filename, "r"); - if (fp == NULL) { - /* - * We raced with a task exiting - just return: - */ - if (verbose) - fprintf(stderr, "couldn't open %s\n", filename); - return; - } - while (1) { - char bf[BUFSIZ], *pbf = bf; - struct mmap_event mmap_ev = { - .header = { .type = PERF_RECORD_MMAP }, - }; - int n; - size_t size; - if (fgets(bf, sizeof(bf), fp) == NULL) - break; - - /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ - n = hex2u64(pbf, &mmap_ev.start); - if (n < 0) - continue; - pbf += n + 1; - n = hex2u64(pbf, &mmap_ev.len); - if (n < 0) - continue; - pbf += n + 3; - if (*pbf == 'x') { /* vm_exec */ - char *execname = strchr(bf, '/'); - - /* Catch VDSO */ - if (execname == NULL) - execname = strstr(bf, "[vdso]"); - - if (execname == NULL) - continue; - - size = strlen(execname); - execname[size - 1] = '\0'; /* Remove \n */ - memcpy(mmap_ev.filename, execname, size); - size = ALIGN(size, sizeof(u64)); - mmap_ev.len -= mmap_ev.start; - mmap_ev.header.size = (sizeof(mmap_ev) - - (sizeof(mmap_ev.filename) - size)); - mmap_ev.pid = tgid; - mmap_ev.tid = pid; - - write_output(&mmap_ev, mmap_ev.header.size); - } - } - - fclose(fp); -} - -static void synthesize_all(void) -{ - DIR *proc; - struct dirent dirent, *next; - - proc = opendir("/proc"); - - while (!readdir_r(proc, &dirent, &next) && next) { - char *end; - pid_t pid, tgid; - - pid = strtol(dirent.d_name, &end, 10); - if (*end) /* only interested in proper numerical dirents */ - continue; - - tgid = pid_synthesize_comm_event(pid, 1); - pid_synthesize_mmap_samples(pid, tgid); - } - - closedir(proc); -} - static int group_fd; static struct perf_header_attr *get_header_attr(struct perf_event_attr *a, int nr) { struct perf_header_attr *h_attr; - if (nr < header->attrs) { - h_attr = header->attr[nr]; + if (nr < session->header.attrs) { + h_attr = session->header.attr[nr]; } else { h_attr = perf_header_attr__new(a); - perf_header__add_attr(header, h_attr); + if (h_attr != NULL) + if (perf_header__add_attr(&session->header, h_attr) < 0) { + perf_header_attr__delete(h_attr); + h_attr = NULL; + } } return h_attr; @@ -375,9 +234,11 @@ static struct perf_header_attr *get_header_attr(struct perf_event_attr *a, int n static void create_counter(int counter, int cpu, pid_t pid) { + char *filter = filters[counter]; struct perf_event_attr *attr = attrs + counter; struct perf_header_attr *h_attr; int track = !counter; /* only the first counter needs these */ + int ret; struct { u64 count; u64 time_enabled; @@ -448,11 +309,19 @@ try_again: printf("\n"); error("perfcounter syscall returned with %d (%s)\n", fd[nr_cpu][counter], strerror(err)); + +#if defined(__i386__) || defined(__x86_64__) + if (attr->type == PERF_TYPE_HARDWARE && err == EOPNOTSUPP) + die("No hardware sampling interrupt available. No APIC? If so then you can boot the kernel with the \"lapic\" boot parameter to force-enable it.\n"); +#endif + die("No CONFIG_PERF_EVENTS=y kernel support configured?\n"); exit(-1); } h_attr = get_header_attr(attr, counter); + if (h_attr == NULL) + die("nomem\n"); if (!file_new) { if (memcmp(&h_attr->attr, attr, sizeof(*attr))) { @@ -466,7 +335,10 @@ try_again: exit(-1); } - perf_header_attr__add_id(h_attr, read_data.id); + if (perf_header_attr__add_id(h_attr, read_data.id) < 0) { + pr_warning("Not enough memory to add id\n"); + exit(-1); + } assert(fd[nr_cpu][counter] >= 0); fcntl(fd[nr_cpu][counter], F_SETFL, O_NONBLOCK); @@ -480,7 +352,6 @@ try_again: multiplex_fd = fd[nr_cpu][counter]; if (multiplex && fd[nr_cpu][counter] != multiplex_fd) { - int ret; ret = ioctl(fd[nr_cpu][counter], PERF_EVENT_IOC_SET_OUTPUT, multiplex_fd); assert(ret != -1); @@ -500,6 +371,16 @@ try_again: } } + if (filter != NULL) { + ret = ioctl(fd[nr_cpu][counter], + PERF_EVENT_IOC_SET_FILTER, filter); + if (ret) { + error("failed to set filter with %d (%s)\n", errno, + strerror(errno)); + exit(-1); + } + } + ioctl(fd[nr_cpu][counter], PERF_EVENT_IOC_ENABLE); } @@ -516,9 +397,9 @@ static void open_counters(int cpu, pid_t pid) static void atexit_header(void) { - header->data_size += bytes_written; + session->header.data_size += bytes_written; - perf_header__write(header, output); + perf_header__write(&session->header, output, true); } static int __cmd_record(int argc, const char **argv) @@ -527,7 +408,7 @@ static int __cmd_record(int argc, const char **argv) struct stat st; pid_t pid = 0; int flags; - int ret; + int err; unsigned long waking = 0; page_size = sysconf(_SC_PAGE_SIZE); @@ -561,22 +442,29 @@ static int __cmd_record(int argc, const char **argv) exit(-1); } - if (!file_new) - header = perf_header__read(output); - else - header = perf_header__new(); + session = perf_session__new(output_name, O_WRONLY, force); + if (session == NULL) { + pr_err("Not enough memory for reading perf file header\n"); + return -1; + } + if (!file_new) { + err = perf_header__read(&session->header, output); + if (err < 0) + return err; + } if (raw_samples) { - read_tracing_data(attrs, nr_counters); + perf_header__set_feat(&session->header, HEADER_TRACE_INFO); } else { for (i = 0; i < nr_counters; i++) { if (attrs[i].sample_type & PERF_SAMPLE_RAW) { - read_tracing_data(attrs, nr_counters); + perf_header__set_feat(&session->header, HEADER_TRACE_INFO); break; } } } + atexit(atexit_header); if (!system_wide) { @@ -594,25 +482,38 @@ static int __cmd_record(int argc, const char **argv) } } - if (file_new) - perf_header__write(header, output); + if (file_new) { + err = perf_header__write(&session->header, output, false); + if (err < 0) + return err; + } - if (!system_wide) { - pid_t tgid = pid_synthesize_comm_event(pid, 0); - pid_synthesize_mmap_samples(pid, tgid); - } else - synthesize_all(); + if (!system_wide) + event__synthesize_thread(pid, process_synthesized_event, + session); + else + event__synthesize_threads(process_synthesized_event, session); if (target_pid == -1 && argc) { pid = fork(); if (pid < 0) - perror("failed to fork"); + die("failed to fork"); if (!pid) { if (execvp(argv[0], (char **)argv)) { perror(argv[0]); exit(-1); } + } else { + /* + * Wait a bit for the execv'ed child to appear + * and be updated in /proc + * FIXME: Do you know a less heuristical solution? + */ + usleep(1000); + event__synthesize_thread(pid, + process_synthesized_event, + session); } child_pid = pid; @@ -623,7 +524,7 @@ static int __cmd_record(int argc, const char **argv) param.sched_priority = realtime_prio; if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { - printf("Could not set realtime priority.\n"); + pr_err("Could not set realtime priority.\n"); exit(-1); } } @@ -641,7 +542,7 @@ static int __cmd_record(int argc, const char **argv) if (hits == samples) { if (done) break; - ret = poll(event_array, nr_poll, -1); + err = poll(event_array, nr_poll, -1); waking++; } @@ -677,6 +578,8 @@ static const struct option options[] = { OPT_CALLBACK('e', "event", NULL, "event", "event selector. use 'perf list' to list available events", parse_events), + OPT_CALLBACK(0, "filter", NULL, "filter", + "event filter", parse_filter), OPT_INTEGER('p', "pid", &target_pid, "record events on existing pid"), OPT_INTEGER('r', "realtime", &realtime_prio, @@ -720,6 +623,8 @@ int cmd_record(int argc, const char **argv, const char *prefix __used) { int counter; + symbol__init(0); + argc = parse_options(argc, argv, options, record_usage, PARSE_OPT_STOP_AT_NON_OPTION); if (!argc && target_pid == -1 && !system_wide) @@ -731,6 +636,18 @@ int cmd_record(int argc, const char **argv, const char *prefix __used) attrs[0].config = PERF_COUNT_HW_CPU_CYCLES; } + /* + * User specified count overrides default frequency. + */ + if (default_interval) + freq = 0; + else if (freq) { + default_interval = freq; + } else { + fprintf(stderr, "frequency and count are zero, aborting\n"); + exit(EXIT_FAILURE); + } + for (counter = 0; counter < nr_counters; counter++) { if (attrs[counter].sample_period) continue;