diff options
Diffstat (limited to 'tools/tracing/rtla/src/osnoise_top.c')
| -rw-r--r-- | tools/tracing/rtla/src/osnoise_top.c | 55 |
1 files changed, 48 insertions, 7 deletions
diff --git a/tools/tracing/rtla/src/osnoise_top.c b/tools/tracing/rtla/src/osnoise_top.c index 457360db0767..07ba55d4ec06 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); |