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path: root/tools/tracing/rtla/src/timerlat_hist.c
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Diffstat (limited to 'tools/tracing/rtla/src/timerlat_hist.c')
-rw-r--r--tools/tracing/rtla/src/timerlat_hist.c148
1 files changed, 48 insertions, 100 deletions
diff --git a/tools/tracing/rtla/src/timerlat_hist.c b/tools/tracing/rtla/src/timerlat_hist.c
index 606c1688057b..1fb471a787b7 100644
--- a/tools/tracing/rtla/src/timerlat_hist.c
+++ b/tools/tracing/rtla/src/timerlat_hist.c
@@ -305,9 +305,7 @@ static void timerlat_hist_header(struct osnoise_tool *tool)
if (!params->common.hist.no_index)
trace_seq_printf(s, "Index");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, &params->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, &params->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
@@ -359,9 +357,7 @@ timerlat_print_summary(struct timerlat_params *params,
if (!params->common.hist.no_index)
trace_seq_printf(trace->seq, "count:");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, &params->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, &params->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
@@ -383,9 +379,7 @@ timerlat_print_summary(struct timerlat_params *params,
if (!params->common.hist.no_index)
trace_seq_printf(trace->seq, "min: ");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, &params->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, &params->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
@@ -413,9 +407,7 @@ timerlat_print_summary(struct timerlat_params *params,
if (!params->common.hist.no_index)
trace_seq_printf(trace->seq, "avg: ");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, &params->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, &params->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
@@ -443,9 +435,7 @@ timerlat_print_summary(struct timerlat_params *params,
if (!params->common.hist.no_index)
trace_seq_printf(trace->seq, "max: ");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, &params->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, &params->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
@@ -490,9 +480,7 @@ timerlat_print_stats_all(struct timerlat_params *params,
sum.min_thread = ~0;
sum.min_user = ~0;
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, &params->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, &params->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
@@ -639,9 +627,7 @@ timerlat_print_stats(struct osnoise_tool *tool)
trace_seq_printf(trace->seq, "%-6d",
bucket * data->bucket_size);
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, &params->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, &params->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
@@ -679,9 +665,7 @@ timerlat_print_stats(struct osnoise_tool *tool)
if (!params->common.hist.no_index)
trace_seq_printf(trace->seq, "over: ");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, &params->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, &params->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
@@ -710,16 +694,16 @@ timerlat_print_stats(struct osnoise_tool *tool)
/*
* timerlat_hist_usage - prints timerlat top usage message
*/
-static void timerlat_hist_usage(char *usage)
+static void timerlat_hist_usage(void)
{
int i;
char *msg[] = {
"",
" usage: [rtla] timerlat hist [-h] [-q] [-d s] [-D] [-n] [-a us] [-p us] [-i us] [-T us] [-s us] \\",
- " [-t[file]] [-e sys[:event]] [--filter <filter>] [--trigger <trigger>] [-c cpu-list] [-H cpu-list]\\",
+ " [-t [file]] [-e sys[:event]] [--filter <filter>] [--trigger <trigger>] [-c cpu-list] [-H cpu-list]\\",
" [-P priority] [-E N] [-b N] [--no-irq] [--no-thread] [--no-header] [--no-summary] \\",
- " [--no-index] [--with-zeros] [--dma-latency us] [-C[=cgroup_name]] [--no-aa] [--dump-task] [-u|-k]",
+ " [--no-index] [--with-zeros] [--dma-latency us] [-C [cgroup_name]] [--no-aa] [--dump-task] [-u|-k]",
" [--warm-up s] [--deepest-idle-state n]",
"",
" -h/--help: print this menu",
@@ -730,11 +714,11 @@ static void timerlat_hist_usage(char *usage)
" -s/--stack us: save the stack trace at the IRQ if a thread latency is higher than the argument in us",
" -c/--cpus cpus: run the tracer only on the given cpus",
" -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",
+ " -C/--cgroup [cgroup_name]: set cgroup, if no cgroup_name is passed, the rtla's cgroup will be inherited",
" -d/--duration time[m|h|d]: duration of the session in seconds",
" --dump-tasks: prints the task running on all CPUs if stop conditions are met (depends on !--no-aa)",
" -D/--debug: print debug info",
- " -t/--trace[file]: save the stopped trace to [file|timerlat_trace.txt]",
+ " -t/--trace [file]: save the stopped trace to [file|timerlat_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",
@@ -766,18 +750,12 @@ static void timerlat_hist_usage(char *usage)
NULL,
};
- if (usage)
- fprintf(stderr, "%s\n", usage);
-
fprintf(stderr, "rtla timerlat hist: a per-cpu histogram of the timer latency (version %s)\n",
VERSION);
for (i = 0; msg[i]; i++)
fprintf(stderr, "%s\n", msg[i]);
- if (usage)
- exit(EXIT_FAILURE);
-
exit(EXIT_SUCCESS);
}
@@ -856,11 +834,8 @@ static struct common_params
{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:i:knp:P:s:t::T:uU0123456:7:8:9\1\2:\3:",
- long_options, &option_index);
+ long_options, NULL);
/* detect the end of the options. */
if (c == -1)
@@ -878,30 +853,25 @@ static struct common_params
params->print_stack = auto_thresh;
/* set trace */
- trace_output = "timerlat_trace.txt";
+ if (!trace_output)
+ trace_output = "timerlat_trace.txt";
break;
case 'c':
retval = parse_cpu_set(optarg, &params->common.monitored_cpus);
if (retval)
- timerlat_hist_usage("\nInvalid -c cpu list\n");
+ fatal("Invalid -c cpu list");
params->common.cpus = optarg;
break;
case 'C':
params->common.cgroup = 1;
- if (!optarg) {
- /* will inherit this cgroup */
- params->common.cgroup_name = NULL;
- } else if (*optarg == '=') {
- /* skip the = */
- params->common.cgroup_name = ++optarg;
- }
+ params->common.cgroup_name = parse_optional_arg(argc, argv);
break;
case 'b':
params->common.hist.bucket_size = get_llong_from_str(optarg);
if (params->common.hist.bucket_size == 0 ||
params->common.hist.bucket_size >= 1000000)
- timerlat_hist_usage("Bucket size needs to be > 0 and <= 1000000\n");
+ fatal("Bucket size needs to be > 0 and <= 1000000");
break;
case 'D':
config_debug = 1;
@@ -909,14 +879,12 @@ static struct common_params
case 'd':
params->common.duration = parse_seconds_duration(optarg);
if (!params->common.duration)
- timerlat_hist_usage("Invalid -D duration\n");
+ fatal("Invalid -D duration");
break;
case 'e':
tevent = trace_event_alloc(optarg);
- if (!tevent) {
- err_msg("Error alloc trace event");
- exit(EXIT_FAILURE);
- }
+ if (!tevent)
+ fatal("Error alloc trace event");
if (params->common.events)
tevent->next = params->common.events;
@@ -927,19 +895,17 @@ static struct common_params
params->common.hist.entries = get_llong_from_str(optarg);
if (params->common.hist.entries < 10 ||
params->common.hist.entries > 9999999)
- timerlat_hist_usage("Entries must be > 10 and < 9999999\n");
+ fatal("Entries must be > 10 and < 9999999");
break;
case 'h':
case '?':
- timerlat_hist_usage(NULL);
+ timerlat_hist_usage();
break;
case 'H':
params->common.hk_cpus = 1;
retval = parse_cpu_set(optarg, &params->common.hk_cpu_set);
- if (retval) {
- err_msg("Error parsing house keeping CPUs\n");
- exit(EXIT_FAILURE);
- }
+ if (retval)
+ fatal("Error parsing house keeping CPUs");
break;
case 'i':
params->common.stop_us = get_llong_from_str(optarg);
@@ -953,12 +919,12 @@ static struct common_params
case 'p':
params->timerlat_period_us = get_llong_from_str(optarg);
if (params->timerlat_period_us > 1000000)
- timerlat_hist_usage("Period longer than 1 s\n");
+ fatal("Period longer than 1 s");
break;
case 'P':
retval = parse_prio(optarg, &params->common.sched_param);
if (retval == -1)
- timerlat_hist_usage("Invalid -P priority");
+ fatal("Invalid -P priority");
params->common.set_sched = 1;
break;
case 's':
@@ -968,14 +934,8 @@ static struct common_params
params->common.stop_total_us = get_llong_from_str(optarg);
break;
case 't':
- if (optarg) {
- if (optarg[0] == '=')
- trace_output = &optarg[1];
- else
- trace_output = &optarg[0];
- } else if (optind < argc && argv[optind][0] != '-')
- trace_output = argv[optind];
- else
+ trace_output = parse_optional_arg(argc, argv);
+ if (!trace_output)
trace_output = "timerlat_trace.txt";
break;
case 'u':
@@ -1005,31 +965,25 @@ static struct common_params
case '6': /* trigger */
if (params->common.events) {
retval = trace_event_add_trigger(params->common.events, optarg);
- if (retval) {
- err_msg("Error adding trigger %s\n", optarg);
- exit(EXIT_FAILURE);
- }
+ if (retval)
+ fatal("Error adding trigger %s", optarg);
} else {
- timerlat_hist_usage("--trigger requires a previous -e\n");
+ fatal("--trigger requires a previous -e");
}
break;
case '7': /* filter */
if (params->common.events) {
retval = trace_event_add_filter(params->common.events, optarg);
- if (retval) {
- err_msg("Error adding filter %s\n", optarg);
- exit(EXIT_FAILURE);
- }
+ if (retval)
+ fatal("Error adding filter %s", optarg);
} else {
- timerlat_hist_usage("--filter requires a previous -e\n");
+ fatal("--filter requires a previous -e");
}
break;
case '8':
params->dma_latency = get_llong_from_str(optarg);
- if (params->dma_latency < 0 || params->dma_latency > 10000) {
- err_msg("--dma-latency needs to be >= 0 and < 10000");
- exit(EXIT_FAILURE);
- }
+ if (params->dma_latency < 0 || params->dma_latency > 10000)
+ fatal("--dma-latency needs to be >= 0 and < 10000");
break;
case '9':
params->no_aa = 1;
@@ -1049,37 +1003,31 @@ static struct common_params
case '\5':
retval = actions_parse(&params->common.threshold_actions, optarg,
"timerlat_trace.txt");
- if (retval) {
- err_msg("Invalid action %s\n", optarg);
- exit(EXIT_FAILURE);
- }
+ if (retval)
+ fatal("Invalid action %s", optarg);
break;
case '\6':
retval = actions_parse(&params->common.end_actions, optarg,
"timerlat_trace.txt");
- if (retval) {
- err_msg("Invalid action %s\n", optarg);
- exit(EXIT_FAILURE);
- }
+ if (retval)
+ fatal("Invalid action %s", optarg);
break;
default:
- timerlat_hist_usage("Invalid option");
+ fatal("Invalid option");
}
}
if (trace_output)
actions_add_trace_output(&params->common.threshold_actions, trace_output);
- if (geteuid()) {
- err_msg("rtla needs root permission\n");
- exit(EXIT_FAILURE);
- }
+ if (geteuid())
+ fatal("rtla needs root permission");
if (params->common.hist.no_irq && params->common.hist.no_thread)
- timerlat_hist_usage("no-irq and no-thread set, there is nothing to do here");
+ fatal("no-irq and no-thread set, there is nothing to do here");
if (params->common.hist.no_index && !params->common.hist.with_zeros)
- timerlat_hist_usage("no-index set with with-zeros is not set - it does not make sense");
+ fatal("no-index set with with-zeros is not set - it does not make sense");
/*
* Auto analysis only happens if stop tracing, thus:
@@ -1088,7 +1036,7 @@ static struct common_params
params->no_aa = 1;
if (params->common.kernel_workload && params->common.user_workload)
- timerlat_hist_usage("--kernel-threads and --user-threads are mutually exclusive!");
+ fatal("--kernel-threads and --user-threads are mutually exclusive!");
/*
* If auto-analysis or trace output is enabled, switch from BPF mode to
generated by cgit (git 2.34.1) at 2025-12-06 09:27:39 +0000