diff options
Diffstat (limited to 'idlestat.c')
| -rw-r--r-- | idlestat.c | 27 |
1 files changed, 23 insertions, 4 deletions
@@ -1000,6 +1000,8 @@ int getoptions(int argc, char *argv[], struct program_options *options) { "wakeup", no_argument, NULL, 'w' }, { "boxless-report", no_argument, NULL, 'B' }, { "csv-report", no_argument, NULL, 'C' }, + { "poll-interval", required_argument, NULL, 'I' }, + { "buffer-size", required_argument, NULL, 'S' }, { "version", no_argument, NULL, 'V' }, { 0, 0, 0, 0 } }; @@ -1014,7 +1016,7 @@ int getoptions(int argc, char *argv[], struct program_options *options) int optindex = 0; - c = getopt_long(argc, argv, ":b:ce:f:ho:pr:t:vwBCV", + c = getopt_long(argc, argv, ":b:ce:f:ho:pr:t:vwBCI:S:V", long_options, &optindex); if (c == -1) break; @@ -1079,6 +1081,12 @@ int getoptions(int argc, char *argv[], struct program_options *options) fprintf(stderr, "-B: report type already set to %s\n", options->report_type_name); return -1; + case 'I': + options->tbs.poll_interval = atoi(optarg); + break; + case 'S': + options->tbs.percpu_buffer_size = atoi(optarg); + break; case 0: /* getopt_long() set a variable, just keep going */ break; case ':': /* missing option argument */ @@ -1374,11 +1382,22 @@ int main(int argc, char *argv[], char *const envp[]) if (is_err(saved_trace_options)) return 1; + /* + * Calculate/verify buffer size and polling trace data + * interval. The interval or may may not be used to + * transfer data from kernel trace buffer to some + * storage media. It is needed for long eventful traces, + * but is not preferred. If the user does not specify + * the values, we will calculate reasonable defaults. + */ + if (calculate_buffer_parameters(options.duration, &options.tbs)) + return 1; + /* Initialize the traces for cpu_idle and increase the - * buffer size to let 'idlestat' to sleep instead of - * acquiring data, hence preventing it to pertubate the + * buffer size to let 'idlestat' to possibly sleep instead + * of acquiring data, hence preventing it to pertubate the * measurements. */ - if (idlestat_init_trace(options.duration)) + if (idlestat_init_trace(options.tbs.percpu_buffer_size)) goto err_restore_trace_options; /* Remove all the previous traces */ |