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| author | Clark Williams <clark.williams@gmail.com> | 2013-03-13 19:36:29 -0500 |
|---|---|---|
| committer | Clark Williams <clark.williams@gmail.com> | 2013-03-13 19:36:29 -0500 |
| commit | 83adb67c7928a73f6434e98cba736717d656ceb4 (patch) | |
| tree | b7f20a78e9c4bae3af69475c8f1e8707c4352ce7 | |
| parent | 1906cc53f5c4e6803cd91403d327c7da272d389a (diff) | |
| download | rt-tests-83adb67c7928a73f6434e98cba736717d656ceb4.tar.gz | |
cyclictest: allow break threshold without doing any tracing
Add the --notrace/-A option, intended to be used in conjunction
with the -b option. This will cause cyclictest to exit when a
threshold is hit, but will not perform any tracing operations,
allowing more sophisticated tracing to be done externally.
Signed-off-by: Clark Williams <clark.williams@gmail.com>
| -rw-r--r-- | src/cyclictest/cyclictest.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/cyclictest/cyclictest.c b/src/cyclictest/cyclictest.c index a8f9534..7eb4799 100644 --- a/src/cyclictest/cyclictest.c +++ b/src/cyclictest/cyclictest.c @@ -165,6 +165,7 @@ struct thread_stat { static int shutdown; static int tracelimit = 0; +static int notrace = 0; static int ftrace = 0; static int kernelversion; static int verbose = 0; @@ -446,7 +447,7 @@ static int settracer(char *tracer) static void setup_tracer(void) { - if (!tracelimit) + if (!tracelimit || notrace) return; if (mount_debugfs(NULL)) @@ -1101,6 +1102,7 @@ static void process_options (int argc, char *argv[]) */ static struct option long_options[] = { {"affinity", optional_argument, NULL, 'a'}, + {"notrace", no_argument, NULL, 'A'}, {"breaktrace", required_argument, NULL, 'b'}, {"preemptirqs", no_argument, NULL, 'B'}, {"clock", required_argument, NULL, 'c'}, @@ -1161,6 +1163,7 @@ static void process_options (int argc, char *argv[]) setaffinity = AFFINITY_USEALL; } break; + case 'A': notrace = 1; break; case 'b': tracelimit = atoi(optarg); break; case 'B': tracetype = PREEMPTIRQSOFF; break; case 'c': clocksel = atoi(optarg); break; @@ -1400,7 +1403,7 @@ static void sighand(int sig) shutdown = 1; if (refresh_on_max) pthread_cond_signal(&refresh_on_max_cond); - if (tracelimit) + if (tracelimit && !notrace) tracing(0); } @@ -1921,7 +1924,7 @@ int main(int argc, char **argv) } out: /* ensure that the tracer is stopped */ - if (tracelimit) + if (tracelimit && !notrace) tracing(0); @@ -1937,7 +1940,7 @@ int main(int argc, char **argv) /* turn off the function tracer */ fileprefix = procfileprefix; - if (tracetype) + if (tracetype && !notrace) setkernvar("ftrace_enabled", "0"); fileprefix = get_debugfileprefix(); |