Merging upstream version 6.10.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

7 files changed, 523 insertions, 72 deletions

diff --git a/tools/tracing/rtla/Makefile.config b/tools/tracing/rtla/Makefile.config
index 6d4ba77847..0b7ecfb30d 100644
--- a/tools/tracing/rtla/Makefile.config
+++ b/tools/tracing/rtla/Makefile.config
@@ -3,7 +3,7 @@
 STOP_ERROR :=
 
 LIBTRACEEVENT_MIN_VERSION = 1.5
-LIBTRACEFS_MIN_VERSION = 1.3
+LIBTRACEFS_MIN_VERSION = 1.6
 
 define lib_setup
   $(eval LIB_INCLUDES += $(shell sh -c "$(PKG_CONFIG) --cflags lib$(1)"))
diff --git a/tools/tracing/rtla/src/osnoise_hist.c b/tools/tracing/rtla/src/osnoise_hist.c
index 01870d5094..7be17d09f7 100644
--- a/tools/tracing/rtla/src/osnoise_hist.c
+++ b/tools/tracing/rtla/src/osnoise_hist.c
@@ -36,13 +36,14 @@ struct osnoise_hist_params {
 	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 {
@@ -436,9 +437,9 @@ static void osnoise_hist_usage(char *usage)
 	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>] \\",
+		"	  [-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]]",
+		"	  [--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",
@@ -452,7 +453,7 @@ static void osnoise_hist_usage(char *usage)
 		"	  -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]",
+		"	  -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",
@@ -468,6 +469,8 @@ static void osnoise_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",
+		"	     --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,
 	};
 
@@ -531,13 +534,15 @@ static struct osnoise_hist_params
 			{"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:",
+		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. */
@@ -640,9 +645,13 @@ static struct osnoise_hist_params
 			params->threshold = 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] != '0')
+				params->trace_output = argv[optind];
 			else
 				params->trace_output = "osnoise_trace.txt";
 			break;
@@ -680,6 +689,12 @@ static struct osnoise_hist_params
 				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");
 		}
@@ -886,6 +901,11 @@ int osnoise_hist_main(int argc, char *argv[])
 				goto out_hist;
 		}
 
+		if (params->buffer_size > 0) {
+			retval = trace_set_buffer_size(&record->trace, params->buffer_size);
+			if (retval)
+				goto out_hist;
+		}
 	}
 
 	/*
@@ -899,6 +919,25 @@ int osnoise_hist_main(int argc, char *argv[])
 		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);
 
diff --git a/tools/tracing/rtla/src/osnoise_top.c b/tools/tracing/rtla/src/osnoise_top.c
index 457360db07..07ba55d4ec 100644
--- a/tools/tracing/rtla/src/osnoise_top.c
+++ b/tools/tracing/rtla/src/osnoise_top.c
@@ -40,6 +40,8 @@ struct osnoise_top_params {
 	int			set_sched;
 	int			cgroup;
 	int			hk_cpus;
+	int			warmup;
+	int			buffer_size;
 	cpu_set_t		hk_cpu_set;
 	struct sched_attr	sched_param;
 	struct trace_events	*events;
@@ -281,8 +283,8 @@ static void osnoise_top_usage(struct osnoise_top_params *params, char *usage)
 
 	static const char * const msg[] = {
 		" [-h] [-q] [-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] [-C[=cgroup_name]]",
+		"	  [-T us] [-t[file]] [-e sys[:event]] [--filter <filter>] [--trigger <trigger>] \\",
+		"	  [-c cpu-list] [-H cpu-list] [-P priority] [-C[=cgroup_name]] [--warm-up s]",
 		"",
 		"	  -h/--help: print this menu",
 		"	  -a/--auto: set automatic trace mode, stopping the session if argument in us sample is hit",
@@ -296,7 +298,7 @@ static void osnoise_top_usage(struct osnoise_top_params *params, char *usage)
 		"	  -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]",
+		"	  -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",
@@ -307,6 +309,8 @@ static void osnoise_top_usage(struct osnoise_top_params *params, 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",
+		"	     --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,
 	};
 
@@ -381,13 +385,15 @@ struct osnoise_top_params *osnoise_top_parse_args(int argc, char **argv)
 			{"trace",		optional_argument,	0, 't'},
 			{"trigger",		required_argument,	0, '0'},
 			{"filter",		required_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::d:De:hH:p:P:qr:s:S:t::T:0:1:",
+		c = getopt_long(argc, argv, "a:c:C::d:De:hH:p:P:qr:s:S:t::T:0:1:2:3:",
 				 long_options, &option_index);
 
 		/* Detect the end of the options. */
@@ -480,9 +486,13 @@ struct osnoise_top_params *osnoise_top_parse_args(int argc, char **argv)
 			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 = "osnoise_trace.txt";
 			break;
@@ -511,6 +521,12 @@ struct osnoise_top_params *osnoise_top_parse_args(int argc, char **argv)
 				osnoise_top_usage(params, "--filter requires a previous -e\n");
 			}
 			break;
+		case '2':
+			params->warmup = get_llong_from_str(optarg);
+			break;
+		case '3':
+			params->buffer_size = get_llong_from_str(optarg);
+			break;
 		default:
 			osnoise_top_usage(params, "Invalid option");
 		}
@@ -719,6 +735,12 @@ int osnoise_top_main(int argc, char **argv)
 			if (retval)
 				goto out_top;
 		}
+
+		if (params->buffer_size > 0) {
+			retval = trace_set_buffer_size(&record->trace, params->buffer_size);
+			if (retval)
+				goto out_top;
+		}
 	}
 
 	/*
@@ -732,6 +754,25 @@ int osnoise_top_main(int argc, char **argv)
 		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_top;
+
+		/*
+		 * 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_top;
+		}
+
+	}
+
 	tool->start_time = time(NULL);
 	osnoise_top_set_signals(params);
 
diff --git a/tools/tracing/rtla/src/timerlat_hist.c b/tools/tracing/rtla/src/timerlat_hist.c
index 5b869caed1..a3907c390d 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 {
@@ -425,8 +428,135 @@ timerlat_print_summary(struct timerlat_hist_params *params,
 	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)
@@ -509,6 +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);
 }
 
 /*
@@ -521,9 +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",
@@ -537,7 +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",
@@ -558,8 +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,
 	};
 
@@ -621,6 +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'},
@@ -634,13 +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. */
@@ -723,6 +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;
@@ -744,9 +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;
@@ -809,6 +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");
 		}
@@ -831,6 +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;
 }
 
@@ -906,6 +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) {
@@ -1043,6 +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) {
@@ -1063,22 +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;
@@ -1098,6 +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);
 
@@ -1123,6 +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);
diff --git a/tools/tracing/rtla/src/timerlat_top.c b/tools/tracing/rtla/src/timerlat_top.c
index 2665e0bb5f..8c16419fe2 100644
--- a/tools/tracing/rtla/src/timerlat_top.c
+++ b/tools/tracing/rtla/src/timerlat_top.c
@@ -44,6 +44,10 @@ struct timerlat_top_params {
 	int			hk_cpus;
 	int			user_top;
 	int			user_workload;
+	int			kernel_workload;
+	int			pretty_output;
+	int			warmup;
+	int			buffer_size;
 	cpu_set_t		hk_cpu_set;
 	struct sched_attr	sched_param;
 	struct trace_events	*events;
@@ -118,6 +122,37 @@ cleanup:
 	return NULL;
 }
 
+static void
+timerlat_top_reset_sum(struct timerlat_top_cpu *summary)
+{
+	memset(summary, 0, sizeof(*summary));
+	summary->min_irq = ~0;
+	summary->min_thread = ~0;
+	summary->min_user = ~0;
+}
+
+static void
+timerlat_top_update_sum(struct osnoise_tool *tool, int cpu, struct timerlat_top_cpu *sum)
+{
+	struct timerlat_top_data *data = tool->data;
+	struct timerlat_top_cpu *cpu_data = &data->cpu_data[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);
+}
+
 /*
  * timerlat_hist_update - record a new timerlat occurent on cpu, updating data
  */
@@ -179,19 +214,22 @@ timerlat_top_handler(struct trace_seq *s, struct tep_record *record,
 /*
  * timerlat_top_header - print the header of the tool output
  */
-static void timerlat_top_header(struct osnoise_tool *top)
+static void timerlat_top_header(struct timerlat_top_params *params, struct osnoise_tool *top)
 {
-	struct timerlat_top_params *params = top->params;
 	struct trace_seq *s = top->trace.seq;
 	char duration[26];
 
 	get_duration(top->start_time, duration, sizeof(duration));
 
-	trace_seq_printf(s, "\033[2;37;40m");
+	if (params->pretty_output)
+		trace_seq_printf(s, "\033[2;37;40m");
+
 	trace_seq_printf(s, "                                     Timer Latency                                              ");
 	if (params->user_top)
 		trace_seq_printf(s, "                                         ");
-	trace_seq_printf(s, "\033[0;0;0m");
+
+	if (params->pretty_output)
+		trace_seq_printf(s, "\033[0;0;0m");
 	trace_seq_printf(s, "\n");
 
 	trace_seq_printf(s, "%-6s   |          IRQ Timer Latency (%s)        |         Thread Timer Latency (%s)", duration,
@@ -204,11 +242,15 @@ static void timerlat_top_header(struct osnoise_tool *top)
 	}
 
 	trace_seq_printf(s, "\n");
-	trace_seq_printf(s, "\033[2;30;47m");
+	if (params->pretty_output)
+		trace_seq_printf(s, "\033[2;30;47m");
+
 	trace_seq_printf(s, "CPU COUNT      |      cur       min       avg       max |      cur       min       avg       max");
 	if (params->user_top)
 		trace_seq_printf(s, " |      cur       min       avg       max");
-	trace_seq_printf(s, "\033[0;0;0m");
+
+	if (params->pretty_output)
+		trace_seq_printf(s, "\033[0;0;0m");
 	trace_seq_printf(s, "\n");
 }
 
@@ -278,6 +320,77 @@ static void timerlat_top_print(struct osnoise_tool *top, int cpu)
 }
 
 /*
+ * timerlat_top_print_sum - prints the summary output
+ */
+static void
+timerlat_top_print_sum(struct osnoise_tool *top, struct timerlat_top_cpu *summary)
+{
+	const char *split = "----------------------------------------";
+	struct timerlat_top_params *params = top->params;
+	unsigned long long count = summary->irq_count;
+	int divisor = params->output_divisor;
+	struct trace_seq *s = top->trace.seq;
+	int e = 0;
+
+	if (divisor == 0)
+		return;
+
+	/*
+	 * Skip if no data is available: is this cpu offline?
+	 */
+	if (!summary->irq_count && !summary->thread_count)
+		return;
+
+	while (count > 999999) {
+		e++;
+		count /= 10;
+	}
+
+	trace_seq_printf(s, "%.*s|%.*s|%.*s", 15, split, 40, split, 39, split);
+	if (params->user_top)
+		trace_seq_printf(s, "-|%.*s", 39, split);
+	trace_seq_printf(s, "\n");
+
+	trace_seq_printf(s, "ALL #%-6llu e%d |", count, e);
+
+	if (!summary->irq_count) {
+		trace_seq_printf(s, "          %s %s %s |", no_value, no_value, no_value);
+	} else {
+		trace_seq_printf(s, "          ");
+		trace_seq_printf(s, "%9llu ", summary->min_irq / params->output_divisor);
+		trace_seq_printf(s, "%9llu ", (summary->sum_irq / summary->irq_count) / divisor);
+		trace_seq_printf(s, "%9llu |", summary->max_irq / divisor);
+	}
+
+	if (!summary->thread_count) {
+		trace_seq_printf(s, "%s %s %s %s", no_value, no_value, no_value, no_value);
+	} else {
+		trace_seq_printf(s, "          ");
+		trace_seq_printf(s, "%9llu ", summary->min_thread / divisor);
+		trace_seq_printf(s, "%9llu ",
+				(summary->sum_thread / summary->thread_count) / divisor);
+		trace_seq_printf(s, "%9llu", summary->max_thread / divisor);
+	}
+
+	if (!params->user_top) {
+		trace_seq_printf(s, "\n");
+		return;
+	}
+
+	trace_seq_printf(s, " |");
+
+	if (!summary->user_count) {
+		trace_seq_printf(s, "          %s %s %s |", no_value, no_value, no_value);
+	} else {
+		trace_seq_printf(s, "          ");
+		trace_seq_printf(s, "%9llu ", summary->min_user / divisor);
+		trace_seq_printf(s, "%9llu ",
+				(summary->sum_user / summary->user_count) / divisor);
+		trace_seq_printf(s, "%9llu\n", summary->max_user / divisor);
+	}
+}
+
+/*
  * clear_terminal - clears the output terminal
  */
 static void clear_terminal(struct trace_seq *seq)
@@ -293,6 +406,7 @@ static void
 timerlat_print_stats(struct timerlat_top_params *params, struct osnoise_tool *top)
 {
 	struct trace_instance *trace = &top->trace;
+	struct timerlat_top_cpu summary;
 	static int nr_cpus = -1;
 	int i;
 
@@ -305,14 +419,19 @@ timerlat_print_stats(struct timerlat_top_params *params, struct osnoise_tool *to
 	if (!params->quiet)
 		clear_terminal(trace->seq);
 
-	timerlat_top_header(top);
+	timerlat_top_reset_sum(&summary);
+
+	timerlat_top_header(params, top);
 
 	for (i = 0; i < nr_cpus; i++) {
 		if (params->cpus && !CPU_ISSET(i, &params->monitored_cpus))
 			continue;
 		timerlat_top_print(top, i);
+		timerlat_top_update_sum(top, i, &summary);
 	}
 
+	timerlat_top_print_sum(top, &summary);
+
 	trace_seq_do_printf(trace->seq);
 	trace_seq_reset(trace->seq);
 }
@@ -327,8 +446,8 @@ static void timerlat_top_usage(char *usage)
 	static const char *const msg[] = {
 		"",
 		"  usage: rtla timerlat [top] [-h] [-q] [-a us] [-d s] [-D] [-n] [-p us] [-i us] [-T us] [-s us] \\",
-		"	  [[-t[=file]] [-e sys[:event]] [--filter <filter>] [--trigger <trigger>] [-c cpu-list] [-H cpu-list]\\",
-		"	  [-P priority] [--dma-latency us] [--aa-only us] [-C[=cgroup_name]] [-u]",
+		"	  [[-t[file]] [-e sys[:event]] [--filter <filter>] [--trigger <trigger>] [-c cpu-list] [-H cpu-list]\\",
+		"	  [-P priority] [--dma-latency us] [--aa-only us] [-C[=cgroup_name]] [-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",
@@ -343,7 +462,7 @@ static void timerlat_top_usage(char *usage)
 		"	  -d/--duration time[m|h|d]: duration of the session in seconds",
 		"	  -D/--debug: print debug info",
 		"	     --dump-tasks: prints the task running on all CPUs if stop conditions are met (depends on !--no-aa)",
-		"	  -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 <command>: enable a trace event filter to the previous -e event",
 		"	     --trigger <command>: enable a trace event trigger to the previous -e event",
@@ -357,8 +476,11 @@ static void timerlat_top_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,
 	};
 
@@ -418,6 +540,7 @@ static struct timerlat_top_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'},
 			{"trigger",		required_argument,	0, '0'},
 			{"filter",		required_argument,	0, '1'},
@@ -425,13 +548,15 @@ static struct timerlat_top_params
 			{"no-aa",		no_argument,		0, '3'},
 			{"dump-tasks",		no_argument,		0, '4'},
 			{"aa-only",		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::d:De:hH:i:np:P:qs:t::T:uU0:1:2:345:",
+		c = getopt_long(argc, argv, "a:c:C::d:De:hH:i:knp:P:qs:t::T:uU0:1:2:345:6:7:",
 				 long_options, &option_index);
 
 		/* detect the end of the options. */
@@ -516,6 +641,9 @@ static struct timerlat_top_params
 		case 'i':
 			params->stop_us = get_llong_from_str(optarg);
 			break;
+		case 'k':
+			params->kernel_workload = true;
+			break;
 		case 'n':
 			params->output_divisor = 1;
 			break;
@@ -540,9 +668,13 @@ static struct timerlat_top_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";
 
@@ -588,6 +720,12 @@ static struct timerlat_top_params
 		case '4':
 			params->dump_tasks = 1;
 			break;
+		case '6':
+			params->warmup = get_llong_from_str(optarg);
+			break;
+		case '7':
+			params->buffer_size = get_llong_from_str(optarg);
+			break;
 		default:
 			timerlat_top_usage("Invalid option");
 		}
@@ -607,6 +745,9 @@ static struct timerlat_top_params
 	if (params->no_aa && params->aa_only)
 		timerlat_top_usage("--no-aa and --aa-only are mutually exclusive!");
 
+	if (params->kernel_workload && params->user_workload)
+		timerlat_top_usage("--kernel-threads and --user-threads are mutually exclusive!");
+
 	return params;
 }
 
@@ -685,6 +826,22 @@ timerlat_top_apply_config(struct osnoise_tool *top, struct timerlat_top_params *
 		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_top = 1;
+		} else {
+			debug_msg("User-space interface not detected, setting kernel-threads\n");
+			params->kernel_workload = 1;
+		}
+	}
+
 	if (params->user_top) {
 		retval = osnoise_set_workload(top->context, 0);
 		if (retval) {
@@ -693,6 +850,9 @@ timerlat_top_apply_config(struct osnoise_tool *top, struct timerlat_top_params *
 		}
 	}
 
+	if (isatty(1) && !params->quiet)
+		params->pretty_output = 1;
+
 	return 0;
 
 out_err:
@@ -823,6 +983,12 @@ int timerlat_top_main(int argc, char *argv[])
 			if (retval)
 				goto out_top;
 		}
+
+		if (params->buffer_size > 0) {
+			retval = trace_set_buffer_size(&record->trace, params->buffer_size);
+			if (retval)
+				goto out_top;
+		}
 	}
 
 	if (!params->no_aa) {
@@ -852,22 +1018,6 @@ int timerlat_top_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 && aa != top)
-		trace_instance_start(&aa->trace);
-	trace_instance_start(trace);
-
-	top->start_time = time(NULL);
-	timerlat_top_set_signals(params);
-
 	if (params->user_workload) {
 		/* rtla asked to stop */
 		params_u.should_run = 1;
@@ -887,6 +1037,27 @@ int timerlat_top_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);
+	}
+
+	/*
+	 * 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 && aa != top)
+		trace_instance_start(&aa->trace);
+	trace_instance_start(trace);
+
+	top->start_time = time(NULL);
+	timerlat_top_set_signals(params);
+
 	while (!stop_tracing) {
 		sleep(params->sleep_time);
 
diff --git a/tools/tracing/rtla/src/trace.c b/tools/tracing/rtla/src/trace.c
index e1ba6d9f42..170a706248 100644
--- a/tools/tracing/rtla/src/trace.c
+++ b/tools/tracing/rtla/src/trace.c
@@ -540,3 +540,18 @@ int trace_is_off(struct trace_instance *tool, struct trace_instance *trace)
 
 	return 0;
 }
+
+/*
+ * trace_set_buffer_size - set the per-cpu tracing buffer size.
+ */
+int trace_set_buffer_size(struct trace_instance *trace, int size)
+{
+	int retval;
+
+	debug_msg("Setting trace buffer size to %d Kb\n", size);
+	retval = tracefs_instance_set_buffer_size(trace->inst, size, -1);
+	if (retval)
+		err_msg("Error setting trace buffer size\n");
+
+	return retval;
+}
diff --git a/tools/tracing/rtla/src/trace.h b/tools/tracing/rtla/src/trace.h
index 2e9a89a256..c7c92dc9a1 100644
--- a/tools/tracing/rtla/src/trace.h
+++ b/tools/tracing/rtla/src/trace.h
@@ -48,3 +48,4 @@ int trace_events_enable(struct trace_instance *instance,
 int trace_event_add_filter(struct trace_events *event, char *filter);
 int trace_event_add_trigger(struct trace_events *event, char *trigger);
 int trace_is_off(struct trace_instance *tool, struct trace_instance *trace);
+int trace_set_buffer_size(struct trace_instance *trace, int size);