diff options
Diffstat (limited to 'tools/tracing/rtla/src/timerlat_top.c')
| -rw-r--r-- | tools/tracing/rtla/src/timerlat_top.c | 47 |
1 files changed, 29 insertions, 18 deletions
diff --git a/tools/tracing/rtla/src/timerlat_top.c b/tools/tracing/rtla/src/timerlat_top.c index bdcf8ef8f815..410eb5174913 100644 --- a/tools/tracing/rtla/src/timerlat_top.c +++ b/tools/tracing/rtla/src/timerlat_top.c @@ -45,6 +45,7 @@ struct timerlat_top_params { int user_top; int user_workload; int pretty_output; + int warmup; cpu_set_t hk_cpu_set; struct sched_attr sched_param; struct trace_events *events; @@ -444,7 +445,7 @@ static void timerlat_top_usage(char *usage) "", " 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]", + " [-P priority] [--dma-latency us] [--aa-only us] [-C[=cgroup_name]] [-u] [--warm-up s]", "", " -h/--help: print this menu", " -a/--auto: set automatic trace mode, stopping the session if argument in us latency is hit", @@ -475,6 +476,7 @@ static void timerlat_top_usage(char *usage) " in nanoseconds", " -u/--user-threads: use rtla user-space threads instead of in-kernel timerlat 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", NULL, }; @@ -541,13 +543,14 @@ 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'}, {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:np:P:qs:t::T:uU0:1:2:345:6:", long_options, &option_index); /* detect the end of the options. */ @@ -704,6 +707,9 @@ static struct timerlat_top_params case '4': params->dump_tasks = 1; break; + case '6': + params->warmup = get_llong_from_str(optarg); + break; default: timerlat_top_usage("Invalid option"); } @@ -971,22 +977,6 @@ 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; @@ -1006,6 +996,27 @@ 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); |