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rtla/osnoise: Add an option to set the threshold 

Add the -T/--threshold option to set the minimum threshold to be
considered a noise to osnoise top and hist commands. Also update
the man pages.

Link: https://lkml.kernel.org/r/031861200ffdb24a1df4aa72c458706889a20d5d.1646247211.git.bristot@kernel.org

Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: Clark Williams <williams@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Daniel Bristot de Oliveira 2022-03-02 20:01:27 +01:00 committed by Steven Rostedt (Google)
parent 61c57d578b
commit d635316ae9
3 changed files with 40 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
Documentation/tools/rtla/common_osnoise_options.rst
View File

@ -15,3 +15,8 @@
Stop the trace if the total sample is higher than the argument in microseconds.
If **-T** is set, it will also save the trace to the output.
**-T**, **--threshold** *us*
Specify the minimum delta between two time reads to be considered noise.
The default threshold is *5 us*.

22
tools/tracing/rtla/src/osnoise_hist.c
View File

@ -21,6 +21,7 @@ struct osnoise_hist_params {
char *trace_output;
unsigned long long runtime;
unsigned long long period;
long long threshold;
long long stop_us;
long long stop_total_us;
int sleep_time;
@ -425,15 +426,16 @@ static void osnoise_hist_usage(char *usage)
static const char * const msg[] = {
"",
" usage: rtla osnoise hist [-h] [-D] [-d s] [-p us] [-r us] [-s us] [-S us] [-t[=file]] \\",
" [-c cpu-list] [-P priority] [-b N] [-E N] [--no-header] [--no-summary] \\",
" [--no-index] [--with-zeros]",
" usage: rtla osnoise hist [-h] [-D] [-d s] [-p us] [-r us] [-s us] [-S us] [-T us] \\",
" [-t[=file]] [-c cpu-list] [-P priority] [-b N] [-E N] [--no-header] \\",
" [--no-summary] [--no-index] [--with-zeros]",
"",
" -h/--help: print this menu",
" -p/--period us: osnoise period in us",
" -r/--runtime us: osnoise runtime in us",
" -s/--stop us: stop trace if a single sample is higher than the argument in us",
" -S/--stop-total us: stop trace if the total sample is higher than the argument in us",
" -T/--threshold us: the minimum delta to be considered a noise",
" -c/--cpus cpu-list: list of cpus to run osnoise threads",
" -d/--duration time[s|m|h|d]: duration of the session",
" -D/--debug: print debug info",
@ -497,6 +499,7 @@ static struct osnoise_hist_params
{"stop", required_argument, 0, 's'},
{"stop-total", required_argument, 0, 'S'},
{"trace", optional_argument, 0, 't'},
{"threshold", required_argument, 0, 'T'},
{"no-header", no_argument, 0, '0'},
{"no-summary", no_argument, 0, '1'},
{"no-index", no_argument, 0, '2'},
@ -507,7 +510,7 @@ static struct osnoise_hist_params
/* getopt_long stores the option index here. */
int option_index = 0;
c = getopt_long(argc, argv, "c:b:d:E:Dhp:P:r:s:S:t::0123",
c = getopt_long(argc, argv, "c:b:d:E:Dhp:P:r:s:S:t::T:0123",
long_options, &option_index);
/* detect the end of the options. */
@ -565,6 +568,9 @@ static struct osnoise_hist_params
case 'S':
params->stop_total_us = get_llong_from_str(optarg);
break;
case 'T':
params->threshold = get_llong_from_str(optarg);
break;
case 't':
if (optarg)
/* skip = */
@ -645,6 +651,14 @@ osnoise_hist_apply_config(struct osnoise_tool *tool, struct osnoise_hist_params
}
}
if (params->threshold) {
retval = osnoise_set_tracing_thresh(tool->context, params->threshold);
if (retval) {
err_msg("Failed to set tracing_thresh\n");
goto out_err;
}
}
return 0;
out_err:

20
tools/tracing/rtla/src/osnoise_top.c
View File

@ -23,6 +23,7 @@ struct osnoise_top_params {
char *trace_output;
unsigned long long runtime;
unsigned long long period;
long long threshold;
long long stop_us;
long long stop_total_us;
int sleep_time;
@ -244,14 +245,15 @@ void osnoise_top_usage(char *usage)
int i;
static const char * const msg[] = {
" usage: rtla osnoise [top] [-h] [-q] [-D] [-d s] [-p us] [-r us] [-s us] [-S us] [-t[=file]] \\",
" [-c cpu-list] [-P priority]",
" usage: rtla osnoise [top] [-h] [-q] [-D] [-d s] [-p us] [-r us] [-s us] [-S us] [-T us] \\",
" [-t[=file]] [-c cpu-list] [-P priority]",
"",
" -h/--help: print this menu",
" -p/--period us: osnoise period in us",
" -r/--runtime us: osnoise runtime in us",
" -s/--stop us: stop trace if a single sample is higher than the argument in us",
" -S/--stop-total us: stop trace if the total sample is higher than the argument in us",
" -T/--threshold us: the minimum delta to be considered a noise",
" -c/--cpus cpu-list: list of cpus to run osnoise threads",
" -d/--duration time[s|m|h|d]: duration of the session",
" -D/--debug: print debug info",
@ -302,6 +304,7 @@ struct osnoise_top_params *osnoise_top_parse_args(int argc, char **argv)
{"runtime", required_argument, 0, 'r'},
{"stop", required_argument, 0, 's'},
{"stop-total", required_argument, 0, 'S'},
{"threshold", required_argument, 0, 'T'},
{"trace", optional_argument, 0, 't'},
{0, 0, 0, 0}
};
@ -309,7 +312,7 @@ struct osnoise_top_params *osnoise_top_parse_args(int argc, char **argv)
/* getopt_long stores the option index here. */
int option_index = 0;
c = getopt_long(argc, argv, "c:d:Dhp:P:qr:s:S:t::",
c = getopt_long(argc, argv, "c:d:Dhp:P:qr:s:S:t::T:",
long_options, &option_index);
/* Detect the end of the options. */
@ -367,6 +370,9 @@ struct osnoise_top_params *osnoise_top_parse_args(int argc, char **argv)
else
params->trace_output = "osnoise_trace.txt";
break;
case 'T':
params->threshold = get_llong_from_str(optarg);
break;
default:
osnoise_top_usage("Invalid option");
}
@ -425,6 +431,14 @@ osnoise_top_apply_config(struct osnoise_tool *tool, struct osnoise_top_params *p
}
}
if (params->threshold) {
retval = osnoise_set_tracing_thresh(tool->context, params->threshold);
if (retval) {
err_msg("Failed to set tracing_thresh\n");
goto out_err;
}
}
return 0;
out_err: