Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Daniel Bristot de Oliveira | 4254 | 97.19% | 23 | 79.31% |
John Kacur | 52 | 1.19% | 2 | 6.90% |
Luis Claudio R. Goncalves | 49 | 1.12% | 1 | 3.45% |
Andreas Ziegler | 18 | 0.41% | 2 | 6.90% |
Wan Jiabing | 4 | 0.09% | 1 | 3.45% |
Total | 4377 | 29 |
// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2021 Red Hat Inc, Daniel Bristot de Oliveira <bristot@kernel.org> */ #define _GNU_SOURCE #include <getopt.h> #include <stdlib.h> #include <string.h> #include <signal.h> #include <unistd.h> #include <errno.h> #include <stdio.h> #include <time.h> #include <sched.h> #include "utils.h" #include "osnoise.h" struct osnoise_hist_params { char *cpus; cpu_set_t monitored_cpus; char *trace_output; char *cgroup_name; unsigned long long runtime; unsigned long long period; long long threshold; long long stop_us; long long stop_total_us; int sleep_time; int duration; int set_sched; int output_divisor; int cgroup; int hk_cpus; cpu_set_t hk_cpu_set; struct sched_attr sched_param; struct trace_events *events; char no_header; char no_summary; char no_index; char with_zeros; int bucket_size; int entries; int warmup; int buffer_size; }; struct osnoise_hist_cpu { int *samples; int count; unsigned long long min_sample; unsigned long long sum_sample; unsigned long long max_sample; }; struct osnoise_hist_data { struct tracefs_hist *trace_hist; struct osnoise_hist_cpu *hist; int entries; int bucket_size; int nr_cpus; }; /* * osnoise_free_histogram - free runtime data */ static void osnoise_free_histogram(struct osnoise_hist_data *data) { int cpu; /* one histogram for IRQ and one for thread, per CPU */ for (cpu = 0; cpu < data->nr_cpus; cpu++) { if (data->hist[cpu].samples) free(data->hist[cpu].samples); } /* one set of histograms per CPU */ if (data->hist) free(data->hist); free(data); } /* * osnoise_alloc_histogram - alloc runtime data */ static struct osnoise_hist_data *osnoise_alloc_histogram(int nr_cpus, int entries, int bucket_size) { struct osnoise_hist_data *data; int cpu; data = calloc(1, sizeof(*data)); if (!data) return NULL; data->entries = entries; data->bucket_size = bucket_size; data->nr_cpus = nr_cpus; data->hist = calloc(1, sizeof(*data->hist) * nr_cpus); if (!data->hist) goto cleanup; for (cpu = 0; cpu < nr_cpus; cpu++) { data->hist[cpu].samples = calloc(1, sizeof(*data->hist->samples) * (entries + 1)); if (!data->hist[cpu].samples) goto cleanup; } /* set the min to max */ for (cpu = 0; cpu < nr_cpus; cpu++) data->hist[cpu].min_sample = ~0; return data; cleanup: osnoise_free_histogram(data); return NULL; } static void osnoise_hist_update_multiple(struct osnoise_tool *tool, int cpu, unsigned long long duration, int count) { struct osnoise_hist_params *params = tool->params; struct osnoise_hist_data *data = tool->data; unsigned long long total_duration; int entries = data->entries; int bucket; int *hist; if (params->output_divisor) duration = duration / params->output_divisor; bucket = duration / data->bucket_size; total_duration = duration * count; hist = data->hist[cpu].samples; data->hist[cpu].count += count; update_min(&data->hist[cpu].min_sample, &duration); update_sum(&data->hist[cpu].sum_sample, &total_duration); update_max(&data->hist[cpu].max_sample, &duration); if (bucket < entries) hist[bucket] += count; else hist[entries] += count; } /* * osnoise_destroy_trace_hist - disable events used to collect histogram */ static void osnoise_destroy_trace_hist(struct osnoise_tool *tool) { struct osnoise_hist_data *data = tool->data; tracefs_hist_pause(tool->trace.inst, data->trace_hist); tracefs_hist_destroy(tool->trace.inst, data->trace_hist); } /* * osnoise_init_trace_hist - enable events used to collect histogram */ static int osnoise_init_trace_hist(struct osnoise_tool *tool) { struct osnoise_hist_params *params = tool->params; struct osnoise_hist_data *data = tool->data; int bucket_size; char buff[128]; int retval = 0; /* * Set the size of the bucket. */ bucket_size = params->output_divisor * params->bucket_size; snprintf(buff, sizeof(buff), "duration.buckets=%d", bucket_size); data->trace_hist = tracefs_hist_alloc(tool->trace.tep, "osnoise", "sample_threshold", buff, TRACEFS_HIST_KEY_NORMAL); if (!data->trace_hist) return 1; retval = tracefs_hist_add_key(data->trace_hist, "cpu", 0); if (retval) goto out_err; retval = tracefs_hist_start(tool->trace.inst, data->trace_hist); if (retval) goto out_err; return 0; out_err: osnoise_destroy_trace_hist(tool); return 1; } /* * osnoise_read_trace_hist - parse histogram file and file osnoise histogram */ static void osnoise_read_trace_hist(struct osnoise_tool *tool) { struct osnoise_hist_data *data = tool->data; long long cpu, counter, duration; char *content, *position; tracefs_hist_pause(tool->trace.inst, data->trace_hist); content = tracefs_event_file_read(tool->trace.inst, "osnoise", "sample_threshold", "hist", NULL); if (!content) return; position = content; while (true) { position = strstr(position, "duration: ~"); if (!position) break; position += strlen("duration: ~"); duration = get_llong_from_str(position); if (duration == -1) err_msg("error reading duration from histogram\n"); position = strstr(position, "cpu:"); if (!position) break; position += strlen("cpu: "); cpu = get_llong_from_str(position); if (cpu == -1) err_msg("error reading cpu from histogram\n"); position = strstr(position, "hitcount:"); if (!position) break; position += strlen("hitcount: "); counter = get_llong_from_str(position); if (counter == -1) err_msg("error reading counter from histogram\n"); osnoise_hist_update_multiple(tool, cpu, duration, counter); } free(content); } /* * osnoise_hist_header - print the header of the tracer to the output */ static void osnoise_hist_header(struct osnoise_tool *tool) { struct osnoise_hist_params *params = tool->params; struct osnoise_hist_data *data = tool->data; struct trace_seq *s = tool->trace.seq; char duration[26]; int cpu; if (params->no_header) return; get_duration(tool->start_time, duration, sizeof(duration)); trace_seq_printf(s, "# RTLA osnoise histogram\n"); trace_seq_printf(s, "# Time unit is %s (%s)\n", params->output_divisor == 1 ? "nanoseconds" : "microseconds", params->output_divisor == 1 ? "ns" : "us"); trace_seq_printf(s, "# Duration: %s\n", duration); if (!params->no_index) trace_seq_printf(s, "Index"); for (cpu = 0; cpu < data->nr_cpus; cpu++) { if (params->cpus && !CPU_ISSET(cpu, ¶ms->monitored_cpus)) continue; if (!data->hist[cpu].count) continue; trace_seq_printf(s, " CPU-%03d", cpu); } trace_seq_printf(s, "\n"); trace_seq_do_printf(s); trace_seq_reset(s); } /* * osnoise_print_summary - print the summary of the hist data to the output */ static void osnoise_print_summary(struct osnoise_hist_params *params, struct trace_instance *trace, struct osnoise_hist_data *data) { int cpu; if (params->no_summary) return; if (!params->no_index) trace_seq_printf(trace->seq, "count:"); for (cpu = 0; cpu < data->nr_cpus; cpu++) { if (params->cpus && !CPU_ISSET(cpu, ¶ms->monitored_cpus)) continue; if (!data->hist[cpu].count) continue; trace_seq_printf(trace->seq, "%9d ", data->hist[cpu].count); } trace_seq_printf(trace->seq, "\n"); if (!params->no_index) trace_seq_printf(trace->seq, "min: "); for (cpu = 0; cpu < data->nr_cpus; cpu++) { if (params->cpus && !CPU_ISSET(cpu, ¶ms->monitored_cpus)) continue; if (!data->hist[cpu].count) continue; trace_seq_printf(trace->seq, "%9llu ", data->hist[cpu].min_sample); } trace_seq_printf(trace->seq, "\n"); if (!params->no_index) trace_seq_printf(trace->seq, "avg: "); for (cpu = 0; cpu < data->nr_cpus; cpu++) { if (params->cpus && !CPU_ISSET(cpu, ¶ms->monitored_cpus)) continue; if (!data->hist[cpu].count) continue; if (data->hist[cpu].count) trace_seq_printf(trace->seq, "%9.2f ", ((double) data->hist[cpu].sum_sample) / data->hist[cpu].count); else trace_seq_printf(trace->seq, " - "); } trace_seq_printf(trace->seq, "\n"); if (!params->no_index) trace_seq_printf(trace->seq, "max: "); for (cpu = 0; cpu < data->nr_cpus; cpu++) { if (params->cpus && !CPU_ISSET(cpu, ¶ms->monitored_cpus)) continue; if (!data->hist[cpu].count) continue; trace_seq_printf(trace->seq, "%9llu ", data->hist[cpu].max_sample); } trace_seq_printf(trace->seq, "\n"); trace_seq_do_printf(trace->seq); trace_seq_reset(trace->seq); } /* * osnoise_print_stats - print data for all CPUs */ static void osnoise_print_stats(struct osnoise_hist_params *params, struct osnoise_tool *tool) { struct osnoise_hist_data *data = tool->data; struct trace_instance *trace = &tool->trace; int has_samples = 0; int bucket, cpu; int total; osnoise_hist_header(tool); for (bucket = 0; bucket < data->entries; bucket++) { total = 0; if (!params->no_index) trace_seq_printf(trace->seq, "%-6d", bucket * data->bucket_size); for (cpu = 0; cpu < data->nr_cpus; cpu++) { if (params->cpus && !CPU_ISSET(cpu, ¶ms->monitored_cpus)) continue; if (!data->hist[cpu].count) continue; total += data->hist[cpu].samples[bucket]; trace_seq_printf(trace->seq, "%9d ", data->hist[cpu].samples[bucket]); } if (total == 0 && !params->with_zeros) { trace_seq_reset(trace->seq); continue; } /* There are samples above the threshold */ has_samples = 1; trace_seq_printf(trace->seq, "\n"); trace_seq_do_printf(trace->seq); trace_seq_reset(trace->seq); } /* * If no samples were recorded, skip calculations, print zeroed statistics * and return. */ if (!has_samples) { trace_seq_reset(trace->seq); trace_seq_printf(trace->seq, "over: 0\ncount: 0\nmin: 0\navg: 0\nmax: 0\n"); trace_seq_do_printf(trace->seq); trace_seq_reset(trace->seq); return; } if (!params->no_index) trace_seq_printf(trace->seq, "over: "); for (cpu = 0; cpu < data->nr_cpus; cpu++) { if (params->cpus && !CPU_ISSET(cpu, ¶ms->monitored_cpus)) continue; if (!data->hist[cpu].count) continue; trace_seq_printf(trace->seq, "%9d ", data->hist[cpu].samples[data->entries]); } trace_seq_printf(trace->seq, "\n"); trace_seq_do_printf(trace->seq); trace_seq_reset(trace->seq); osnoise_print_summary(params, trace, data); } /* * osnoise_hist_usage - prints osnoise hist usage message */ static void osnoise_hist_usage(char *usage) { int i; static const char * const msg[] = { "", " usage: rtla osnoise hist [-h] [-D] [-d s] [-a us] [-p us] [-r us] [-s us] [-S us] \\", " [-T us] [-t[file]] [-e sys[:event]] [--filter <filter>] [--trigger <trigger>] \\", " [-c cpu-list] [-H cpu-list] [-P priority] [-b N] [-E N] [--no-header] [--no-summary] \\", " [--no-index] [--with-zeros] [-C[=cgroup_name]] [--warm-up]", "", " -h/--help: print this menu", " -a/--auto: set automatic trace mode, stopping the session if argument in us sample is hit", " -p/--period us: osnoise period in us", " -r/--runtime us: osnoise runtime in us", " -s/--stop us: stop trace if a single sample is higher than the argument in us", " -S/--stop-total us: stop trace if the total sample is higher than the argument in us", " -T/--threshold us: the minimum delta to be considered a noise", " -c/--cpus cpu-list: list of cpus to run osnoise threads", " -H/--house-keeping cpus: run rtla control threads only on the given cpus", " -C/--cgroup[=cgroup_name]: set cgroup, if no cgroup_name is passed, the rtla's cgroup will be inherited", " -d/--duration time[s|m|h|d]: duration of the session", " -D/--debug: print debug info", " -t/--trace[file]: save the stopped trace to [file|osnoise_trace.txt]", " -e/--event <sys:event>: enable the <sys:event> in the trace instance, multiple -e are allowed", " --filter <filter>: enable a trace event filter to the previous -e event", " --trigger <trigger>: enable a trace event trigger to the previous -e event", " -b/--bucket-size N: set the histogram bucket size (default 1)", " -E/--entries N: set the number of entries of the histogram (default 256)", " --no-header: do not print header", " --no-summary: do not print summary", " --no-index: do not print index", " --with-zeros: print zero only entries", " -P/--priority o:prio|r:prio|f:prio|d:runtime:period: set scheduling parameters", " o:prio - use SCHED_OTHER with prio", " r:prio - use SCHED_RR with prio", " f:prio - use SCHED_FIFO with prio", " d:runtime[us|ms|s]:period[us|ms|s] - use SCHED_DEADLINE with runtime and period", " in nanoseconds", " --warm-up: let the workload run for s seconds before collecting data", " --trace-buffer-size kB: set the per-cpu trace buffer size in kB", NULL, }; if (usage) fprintf(stderr, "%s\n", usage); fprintf(stderr, "rtla osnoise hist: a per-cpu histogram of the OS noise (version %s)\n", VERSION); for (i = 0; msg[i]; i++) fprintf(stderr, "%s\n", msg[i]); if (usage) exit(EXIT_FAILURE); exit(EXIT_SUCCESS); } /* * osnoise_hist_parse_args - allocs, parse and fill the cmd line parameters */ static struct osnoise_hist_params *osnoise_hist_parse_args(int argc, char *argv[]) { struct osnoise_hist_params *params; struct trace_events *tevent; int retval; int c; params = calloc(1, sizeof(*params)); if (!params) exit(1); /* display data in microseconds */ params->output_divisor = 1000; params->bucket_size = 1; params->entries = 256; while (1) { static struct option long_options[] = { {"auto", required_argument, 0, 'a'}, {"bucket-size", required_argument, 0, 'b'}, {"entries", required_argument, 0, 'E'}, {"cpus", required_argument, 0, 'c'}, {"cgroup", optional_argument, 0, 'C'}, {"debug", no_argument, 0, 'D'}, {"duration", required_argument, 0, 'd'}, {"house-keeping", required_argument, 0, 'H'}, {"help", no_argument, 0, 'h'}, {"period", required_argument, 0, 'p'}, {"priority", required_argument, 0, 'P'}, {"runtime", required_argument, 0, 'r'}, {"stop", required_argument, 0, 's'}, {"stop-total", required_argument, 0, 'S'}, {"trace", optional_argument, 0, 't'}, {"event", required_argument, 0, 'e'}, {"threshold", required_argument, 0, 'T'}, {"no-header", no_argument, 0, '0'}, {"no-summary", no_argument, 0, '1'}, {"no-index", no_argument, 0, '2'}, {"with-zeros", no_argument, 0, '3'}, {"trigger", required_argument, 0, '4'}, {"filter", required_argument, 0, '5'}, {"warm-up", required_argument, 0, '6'}, {"trace-buffer-size", required_argument, 0, '7'}, {0, 0, 0, 0} }; /* getopt_long stores the option index here. */ int option_index = 0; c = getopt_long(argc, argv, "a:c:C::b:d:e:E:DhH:p:P:r:s:S:t::T:01234:5:6:7:", long_options, &option_index); /* detect the end of the options. */ if (c == -1) break; switch (c) { case 'a': /* set sample stop to auto_thresh */ params->stop_us = get_llong_from_str(optarg); /* set sample threshold to 1 */ params->threshold = 1; /* set trace */ params->trace_output = "osnoise_trace.txt"; break; case 'b': params->bucket_size = get_llong_from_str(optarg); if ((params->bucket_size == 0) || (params->bucket_size >= 1000000)) osnoise_hist_usage("Bucket size needs to be > 0 and <= 1000000\n"); break; case 'c': retval = parse_cpu_set(optarg, ¶ms->monitored_cpus); if (retval) osnoise_hist_usage("\nInvalid -c cpu list\n"); params->cpus = optarg; break; case 'C': params->cgroup = 1; if (!optarg) { /* will inherit this cgroup */ params->cgroup_name = NULL; } else if (*optarg == '=') { /* skip the = */ params->cgroup_name = ++optarg; } break; case 'D': config_debug = 1; break; case 'd': params->duration = parse_seconds_duration(optarg); if (!params->duration) osnoise_hist_usage("Invalid -D duration\n"); break; case 'e': tevent = trace_event_alloc(optarg); if (!tevent) { err_msg("Error alloc trace event"); exit(EXIT_FAILURE); } if (params->events) tevent->next = params->events; params->events = tevent; break; case 'E': params->entries = get_llong_from_str(optarg); if ((params->entries < 10) || (params->entries > 9999999)) osnoise_hist_usage("Entries must be > 10 and < 9999999\n"); break; case 'h': case '?': osnoise_hist_usage(NULL); break; case 'H': params->hk_cpus = 1; retval = parse_cpu_set(optarg, ¶ms->hk_cpu_set); if (retval) { err_msg("Error parsing house keeping CPUs\n"); exit(EXIT_FAILURE); } break; case 'p': params->period = get_llong_from_str(optarg); if (params->period > 10000000) osnoise_hist_usage("Period longer than 10 s\n"); break; case 'P': retval = parse_prio(optarg, ¶ms->sched_param); if (retval == -1) osnoise_hist_usage("Invalid -P priority"); params->set_sched = 1; break; case 'r': params->runtime = get_llong_from_str(optarg); if (params->runtime < 100) osnoise_hist_usage("Runtime shorter than 100 us\n"); break; case 's': params->stop_us = get_llong_from_str(optarg); break; case 'S': params->stop_total_us = get_llong_from_str(optarg); break; case 'T': params->threshold = get_llong_from_str(optarg); break; case 't': if (optarg) { if (optarg[0] == '=') params->trace_output = &optarg[1]; else params->trace_output = &optarg[0]; } else if (optind < argc && argv[optind][0] != '0') params->trace_output = argv[optind]; else params->trace_output = "osnoise_trace.txt"; break; case '0': /* no header */ params->no_header = 1; break; case '1': /* no summary */ params->no_summary = 1; break; case '2': /* no index */ params->no_index = 1; break; case '3': /* with zeros */ params->with_zeros = 1; break; case '4': /* trigger */ if (params->events) { retval = trace_event_add_trigger(params->events, optarg); if (retval) { err_msg("Error adding trigger %s\n", optarg); exit(EXIT_FAILURE); } } else { osnoise_hist_usage("--trigger requires a previous -e\n"); } break; case '5': /* filter */ if (params->events) { retval = trace_event_add_filter(params->events, optarg); if (retval) { err_msg("Error adding filter %s\n", optarg); exit(EXIT_FAILURE); } } else { osnoise_hist_usage("--filter requires a previous -e\n"); } break; case '6': params->warmup = get_llong_from_str(optarg); break; case '7': params->buffer_size = get_llong_from_str(optarg); break; default: osnoise_hist_usage("Invalid option"); } } if (geteuid()) { err_msg("rtla needs root permission\n"); exit(EXIT_FAILURE); } if (params->no_index && !params->with_zeros) osnoise_hist_usage("no-index set and with-zeros not set - it does not make sense"); return params; } /* * osnoise_hist_apply_config - apply the hist configs to the initialized tool */ static int osnoise_hist_apply_config(struct osnoise_tool *tool, struct osnoise_hist_params *params) { int retval; if (!params->sleep_time) params->sleep_time = 1; if (params->cpus) { retval = osnoise_set_cpus(tool->context, params->cpus); if (retval) { err_msg("Failed to apply CPUs config\n"); goto out_err; } } if (params->runtime || params->period) { retval = osnoise_set_runtime_period(tool->context, params->runtime, params->period); if (retval) { err_msg("Failed to set runtime and/or period\n"); goto out_err; } } if (params->stop_us) { retval = osnoise_set_stop_us(tool->context, params->stop_us); if (retval) { err_msg("Failed to set stop us\n"); goto out_err; } } if (params->stop_total_us) { retval = osnoise_set_stop_total_us(tool->context, params->stop_total_us); if (retval) { err_msg("Failed to set stop total us\n"); goto out_err; } } if (params->threshold) { retval = osnoise_set_tracing_thresh(tool->context, params->threshold); if (retval) { err_msg("Failed to set tracing_thresh\n"); goto out_err; } } if (params->hk_cpus) { retval = sched_setaffinity(getpid(), sizeof(params->hk_cpu_set), ¶ms->hk_cpu_set); if (retval == -1) { err_msg("Failed to set rtla to the house keeping CPUs\n"); goto out_err; } } else if (params->cpus) { /* * Even if the user do not set a house-keeping CPU, try to * move rtla to a CPU set different to the one where the user * set the workload to run. * * No need to check results as this is an automatic attempt. */ auto_house_keeping(¶ms->monitored_cpus); } return 0; out_err: return -1; } /* * osnoise_init_hist - initialize a osnoise hist tool with parameters */ static struct osnoise_tool *osnoise_init_hist(struct osnoise_hist_params *params) { struct osnoise_tool *tool; int nr_cpus; nr_cpus = sysconf(_SC_NPROCESSORS_CONF); tool = osnoise_init_tool("osnoise_hist"); if (!tool) return NULL; tool->data = osnoise_alloc_histogram(nr_cpus, params->entries, params->bucket_size); if (!tool->data) goto out_err; tool->params = params; return tool; out_err: osnoise_destroy_tool(tool); return NULL; } static int stop_tracing; static void stop_hist(int sig) { stop_tracing = 1; } /* * osnoise_hist_set_signals - handles the signal to stop the tool */ static void osnoise_hist_set_signals(struct osnoise_hist_params *params) { signal(SIGINT, stop_hist); if (params->duration) { signal(SIGALRM, stop_hist); alarm(params->duration); } } int osnoise_hist_main(int argc, char *argv[]) { struct osnoise_hist_params *params; struct osnoise_tool *record = NULL; struct osnoise_tool *tool = NULL; struct trace_instance *trace; int return_value = 1; int retval; params = osnoise_hist_parse_args(argc, argv); if (!params) exit(1); tool = osnoise_init_hist(params); if (!tool) { err_msg("Could not init osnoise hist\n"); goto out_exit; } retval = osnoise_hist_apply_config(tool, params); if (retval) { err_msg("Could not apply config\n"); goto out_destroy; } trace = &tool->trace; retval = enable_osnoise(trace); if (retval) { err_msg("Failed to enable osnoise tracer\n"); goto out_destroy; } retval = osnoise_init_trace_hist(tool); if (retval) goto out_destroy; if (params->set_sched) { retval = set_comm_sched_attr("osnoise/", ¶ms->sched_param); if (retval) { err_msg("Failed to set sched parameters\n"); goto out_free; } } if (params->cgroup) { retval = set_comm_cgroup("timerlat/", params->cgroup_name); if (!retval) { err_msg("Failed to move threads to cgroup\n"); goto out_free; } } if (params->trace_output) { record = osnoise_init_trace_tool("osnoise"); if (!record) { err_msg("Failed to enable the trace instance\n"); goto out_free; } if (params->events) { retval = trace_events_enable(&record->trace, params->events); if (retval) goto out_hist; } if (params->buffer_size > 0) { retval = trace_set_buffer_size(&record->trace, params->buffer_size); if (retval) goto out_hist; } } /* * Start the tracer here, after having set all instances. * * Let the trace instance start first for the case of hitting a stop * tracing while enabling other instances. The trace instance is the * one with most valuable information. */ if (params->trace_output) trace_instance_start(&record->trace); trace_instance_start(trace); if (params->warmup > 0) { debug_msg("Warming up for %d seconds\n", params->warmup); sleep(params->warmup); if (stop_tracing) goto out_hist; /* * Clean up the buffer. The osnoise workload do not run * with tracing off to avoid creating a performance penalty * when not needed. */ retval = tracefs_instance_file_write(trace->inst, "trace", ""); if (retval < 0) { debug_msg("Error cleaning up the buffer"); goto out_hist; } } tool->start_time = time(NULL); osnoise_hist_set_signals(params); while (!stop_tracing) { sleep(params->sleep_time); retval = tracefs_iterate_raw_events(trace->tep, trace->inst, NULL, 0, collect_registered_events, trace); if (retval < 0) { err_msg("Error iterating on events\n"); goto out_hist; } if (trace_is_off(&tool->trace, &record->trace)) break; } osnoise_read_trace_hist(tool); osnoise_print_stats(params, tool); return_value = 0; if (trace_is_off(&tool->trace, &record->trace)) { printf("rtla osnoise hit stop tracing\n"); if (params->trace_output) { printf(" Saving trace to %s\n", params->trace_output); save_trace_to_file(record->trace.inst, params->trace_output); } } out_hist: trace_events_destroy(&record->trace, params->events); params->events = NULL; out_free: osnoise_free_histogram(tool->data); out_destroy: osnoise_destroy_tool(record); osnoise_destroy_tool(tool); free(params); out_exit: exit(return_value); }
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