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Diffstat (limited to 'tools/tracing/rtla/src/timerlat_hist.c')
-rw-r--r--tools/tracing/rtla/src/timerlat_hist.c294
1 files changed, 251 insertions, 43 deletions
diff --git a/tools/tracing/rtla/src/timerlat_hist.c b/tools/tracing/rtla/src/timerlat_hist.c
index 8bd51aab6513..a3907c390d67 100644
--- a/tools/tracing/rtla/src/timerlat_hist.c
+++ b/tools/tracing/rtla/src/timerlat_hist.c
@@ -40,6 +40,7 @@ struct timerlat_hist_params {
int no_aa;
int dump_tasks;
int user_workload;
+ int kernel_workload;
int user_hist;
cpu_set_t hk_cpu_set;
struct sched_attr sched_param;
@@ -52,6 +53,8 @@ struct timerlat_hist_params {
char with_zeros;
int bucket_size;
int entries;
+ int warmup;
+ int buffer_size;
};
struct timerlat_hist_cpu {
@@ -324,17 +327,29 @@ timerlat_print_summary(struct timerlat_hist_params *params,
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
- if (!params->no_irq)
- trace_seq_printf(trace->seq, "%9llu ",
- data->hist[cpu].min_irq);
+ if (!params->no_irq) {
+ if (data->hist[cpu].irq_count)
+ trace_seq_printf(trace->seq, "%9llu ",
+ data->hist[cpu].min_irq);
+ else
+ trace_seq_printf(trace->seq, " - ");
+ }
- if (!params->no_thread)
- trace_seq_printf(trace->seq, "%9llu ",
- data->hist[cpu].min_thread);
+ if (!params->no_thread) {
+ if (data->hist[cpu].thread_count)
+ trace_seq_printf(trace->seq, "%9llu ",
+ data->hist[cpu].min_thread);
+ else
+ trace_seq_printf(trace->seq, " - ");
+ }
- if (params->user_hist)
- trace_seq_printf(trace->seq, "%9llu ",
- data->hist[cpu].min_user);
+ if (params->user_hist) {
+ if (data->hist[cpu].user_count)
+ trace_seq_printf(trace->seq, "%9llu ",
+ data->hist[cpu].min_user);
+ else
+ trace_seq_printf(trace->seq, " - ");
+ }
}
trace_seq_printf(trace->seq, "\n");
@@ -384,25 +399,164 @@ timerlat_print_summary(struct timerlat_hist_params *params,
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
- if (!params->no_irq)
- trace_seq_printf(trace->seq, "%9llu ",
- data->hist[cpu].max_irq);
+ if (!params->no_irq) {
+ if (data->hist[cpu].irq_count)
+ trace_seq_printf(trace->seq, "%9llu ",
+ data->hist[cpu].max_irq);
+ else
+ trace_seq_printf(trace->seq, " - ");
+ }
- if (!params->no_thread)
- trace_seq_printf(trace->seq, "%9llu ",
- data->hist[cpu].max_thread);
+ if (!params->no_thread) {
+ if (data->hist[cpu].thread_count)
+ trace_seq_printf(trace->seq, "%9llu ",
+ data->hist[cpu].max_thread);
+ else
+ trace_seq_printf(trace->seq, " - ");
+ }
- if (params->user_hist)
- trace_seq_printf(trace->seq, "%9llu ",
- data->hist[cpu].max_user);
+ if (params->user_hist) {
+ if (data->hist[cpu].user_count)
+ trace_seq_printf(trace->seq, "%9llu ",
+ data->hist[cpu].max_user);
+ else
+ trace_seq_printf(trace->seq, " - ");
+ }
}
trace_seq_printf(trace->seq, "\n");
trace_seq_do_printf(trace->seq);
trace_seq_reset(trace->seq);
}
+static void
+timerlat_print_stats_all(struct timerlat_hist_params *params,
+ struct trace_instance *trace,
+ struct timerlat_hist_data *data)
+{
+ struct timerlat_hist_cpu *cpu_data;
+ struct timerlat_hist_cpu sum;
+ int cpu;
+
+ if (params->no_summary)
+ return;
+
+ memset(&sum, 0, sizeof(sum));
+ sum.min_irq = ~0;
+ sum.min_thread = ~0;
+ sum.min_user = ~0;
+
+ for (cpu = 0; cpu < data->nr_cpus; cpu++) {
+ if (params->cpus && !CPU_ISSET(cpu, &params->monitored_cpus))
+ continue;
+
+ if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
+ continue;
+
+ cpu_data = &data->hist[cpu];
+
+ sum.irq_count += cpu_data->irq_count;
+ update_min(&sum.min_irq, &cpu_data->min_irq);
+ update_sum(&sum.sum_irq, &cpu_data->sum_irq);
+ update_max(&sum.max_irq, &cpu_data->max_irq);
+
+ sum.thread_count += cpu_data->thread_count;
+ update_min(&sum.min_thread, &cpu_data->min_thread);
+ update_sum(&sum.sum_thread, &cpu_data->sum_thread);
+ update_max(&sum.max_thread, &cpu_data->max_thread);
+
+ sum.user_count += cpu_data->user_count;
+ update_min(&sum.min_user, &cpu_data->min_user);
+ update_sum(&sum.sum_user, &cpu_data->sum_user);
+ update_max(&sum.max_user, &cpu_data->max_user);
+ }
+
+ if (!params->no_index)
+ trace_seq_printf(trace->seq, "ALL: ");
+
+ if (!params->no_irq)
+ trace_seq_printf(trace->seq, " IRQ");
+
+ if (!params->no_thread)
+ trace_seq_printf(trace->seq, " Thr");
+
+ if (params->user_hist)
+ trace_seq_printf(trace->seq, " Usr");
+
+ trace_seq_printf(trace->seq, "\n");
+
+ if (!params->no_index)
+ trace_seq_printf(trace->seq, "count:");
+
+ if (!params->no_irq)
+ trace_seq_printf(trace->seq, "%9d ",
+ sum.irq_count);
+
+ if (!params->no_thread)
+ trace_seq_printf(trace->seq, "%9d ",
+ sum.thread_count);
+
+ if (params->user_hist)
+ trace_seq_printf(trace->seq, "%9d ",
+ sum.user_count);
+
+ trace_seq_printf(trace->seq, "\n");
+
+ if (!params->no_index)
+ trace_seq_printf(trace->seq, "min: ");
+
+ if (!params->no_irq)
+ trace_seq_printf(trace->seq, "%9llu ",
+ sum.min_irq);
+
+ if (!params->no_thread)
+ trace_seq_printf(trace->seq, "%9llu ",
+ sum.min_thread);
+
+ if (params->user_hist)
+ trace_seq_printf(trace->seq, "%9llu ",
+ sum.min_user);
+
+ trace_seq_printf(trace->seq, "\n");
+
+ if (!params->no_index)
+ trace_seq_printf(trace->seq, "avg: ");
+
+ if (!params->no_irq)
+ trace_seq_printf(trace->seq, "%9llu ",
+ sum.sum_irq / sum.irq_count);
+
+ if (!params->no_thread)
+ trace_seq_printf(trace->seq, "%9llu ",
+ sum.sum_thread / sum.thread_count);
+
+ if (params->user_hist)
+ trace_seq_printf(trace->seq, "%9llu ",
+ sum.sum_user / sum.user_count);
+
+ trace_seq_printf(trace->seq, "\n");
+
+ if (!params->no_index)
+ trace_seq_printf(trace->seq, "max: ");
+
+ if (!params->no_irq)
+ trace_seq_printf(trace->seq, "%9llu ",
+ sum.max_irq);
+
+ if (!params->no_thread)
+ trace_seq_printf(trace->seq, "%9llu ",
+ sum.max_thread);
+
+ if (params->user_hist)
+ trace_seq_printf(trace->seq, "%9llu ",
+ sum.max_user);
+
+ trace_seq_printf(trace->seq, "\n");
+ trace_seq_do_printf(trace->seq);
+ trace_seq_reset(trace->seq);
+}
+
/*
- * timerlat_print_stats - print data for all CPUs
+ * timerlat_print_stats - print data for each CPUs
*/
static void
timerlat_print_stats(struct timerlat_hist_params *params, struct osnoise_tool *tool)
@@ -485,6 +639,7 @@ timerlat_print_stats(struct timerlat_hist_params *params, struct osnoise_tool *t
trace_seq_reset(trace->seq);
timerlat_print_summary(params, trace, data);
+ timerlat_print_stats_all(params, trace, data);
}
/*
@@ -497,9 +652,10 @@ static void timerlat_hist_usage(char *usage)
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]",
+ " [--no-index] [--with-zeros] [--dma-latency us] [-C[=cgroup_name]] [--no-aa] [--dump-task] [-u|-k]",
+ " [--warm-up s]",
"",
" -h/--help: print this menu",
" -a/--auto: set automatic trace mode, stopping the session if argument in us latency is hit",
@@ -513,7 +669,7 @@ static void timerlat_hist_usage(char *usage)
" -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",
@@ -534,8 +690,11 @@ static void timerlat_hist_usage(char *usage)
" 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",
- " -u/--user-threads: use rtla user-space threads instead of in-kernel timerlat threads",
+ " -u/--user-threads: use rtla user-space threads instead of kernel-space timerlat threads",
+ " -k/--kernel-threads: use timerlat kernel-space threads instead of rtla user-space threads",
" -U/--user-load: enable timerlat for user-defined user-space workload",
+ " --warm-up s: let the workload run for s seconds before collecting data",
+ " --trace-buffer-size kB: set the per-cpu trace buffer size in kB",
NULL,
};
@@ -597,6 +756,7 @@ static struct timerlat_hist_params
{"thread", required_argument, 0, 'T'},
{"trace", optional_argument, 0, 't'},
{"user-threads", no_argument, 0, 'u'},
+ {"kernel-threads", no_argument, 0, 'k'},
{"user-load", no_argument, 0, 'U'},
{"event", required_argument, 0, 'e'},
{"no-irq", no_argument, 0, '0'},
@@ -610,13 +770,15 @@ static struct timerlat_hist_params
{"dma-latency", required_argument, 0, '8'},
{"no-aa", no_argument, 0, '9'},
{"dump-task", no_argument, 0, '\1'},
+ {"warm-up", required_argument, 0, '\2'},
+ {"trace-buffer-size", required_argument, 0, '\3'},
{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:np:P:s:t::T:uU0123456:7:8:9\1",
+ 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);
/* detect the end of the options. */
@@ -699,6 +861,9 @@ static struct timerlat_hist_params
case 'i':
params->stop_us = get_llong_from_str(optarg);
break;
+ case 'k':
+ params->kernel_workload = 1;
+ break;
case 'n':
params->output_divisor = 1;
break;
@@ -720,9 +885,13 @@ static struct timerlat_hist_params
params->stop_total_us = get_llong_from_str(optarg);
break;
case 't':
- if (optarg)
- /* skip = */
- params->trace_output = &optarg[1];
+ if (optarg) {
+ if (optarg[0] == '=')
+ params->trace_output = &optarg[1];
+ else
+ params->trace_output = &optarg[0];
+ } else if (optind < argc && argv[optind][0] != '-')
+ params->trace_output = argv[optind];
else
params->trace_output = "timerlat_trace.txt";
break;
@@ -785,6 +954,12 @@ static struct timerlat_hist_params
case '\1':
params->dump_tasks = 1;
break;
+ case '\2':
+ params->warmup = get_llong_from_str(optarg);
+ break;
+ case '\3':
+ params->buffer_size = get_llong_from_str(optarg);
+ break;
default:
timerlat_hist_usage("Invalid option");
}
@@ -807,6 +982,9 @@ static struct timerlat_hist_params
if (!params->stop_us && !params->stop_total_us)
params->no_aa = 1;
+ if (params->kernel_workload && params->user_workload)
+ timerlat_hist_usage("--kernel-threads and --user-threads are mutually exclusive!");
+
return params;
}
@@ -882,6 +1060,22 @@ timerlat_hist_apply_config(struct osnoise_tool *tool, struct timerlat_hist_param
auto_house_keeping(&params->monitored_cpus);
}
+ /*
+ * If the user did not specify a type of thread, try user-threads first.
+ * Fall back to kernel threads otherwise.
+ */
+ if (!params->kernel_workload && !params->user_workload) {
+ retval = tracefs_file_exists(NULL, "osnoise/per_cpu/cpu0/timerlat_fd");
+ if (retval) {
+ debug_msg("User-space interface detected, setting user-threads\n");
+ params->user_workload = 1;
+ params->user_hist = 1;
+ } else {
+ debug_msg("User-space interface not detected, setting kernel-threads\n");
+ params->kernel_workload = 1;
+ }
+ }
+
if (params->user_hist) {
retval = osnoise_set_workload(tool->context, 0);
if (retval) {
@@ -1019,6 +1213,12 @@ int timerlat_hist_main(int argc, char *argv[])
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;
+ }
}
if (!params->no_aa) {
@@ -1039,22 +1239,6 @@ int timerlat_hist_main(int argc, char *argv[])
}
}
- /*
- * Start the tracers 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);
- if (!params->no_aa)
- trace_instance_start(&aa->trace);
- trace_instance_start(trace);
-
- tool->start_time = time(NULL);
- timerlat_hist_set_signals(params);
-
if (params->user_workload) {
/* rtla asked to stop */
params_u.should_run = 1;
@@ -1074,6 +1258,29 @@ int timerlat_hist_main(int argc, char *argv[])
err_msg("Error creating timerlat user-space threads\n");
}
+ if (params->warmup > 0) {
+ debug_msg("Warming up for %d seconds\n", params->warmup);
+ sleep(params->warmup);
+ if (stop_tracing)
+ goto out_hist;
+ }
+
+ /*
+ * Start the tracers 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);
+ if (!params->no_aa)
+ trace_instance_start(&aa->trace);
+ trace_instance_start(trace);
+
+ tool->start_time = time(NULL);
+ timerlat_hist_set_signals(params);
+
while (!stop_tracing) {
sleep(params->sleep_time);
@@ -1099,6 +1306,7 @@ int timerlat_hist_main(int argc, char *argv[])
}
}
}
+
if (params->user_workload && !params_u.stopped_running) {
params_u.should_run = 0;
sleep(1);
generated by cgit v1.2.3-70-g09d2 (git 2.51.1) at 2025-11-04 07:40:56 +0000