Re: [PATCH 1/2] add-smp-option-to-ptsematest.patch
From: John Kacur <jkacur@redhat.com>
Date: 2010-03-08 12:45:28
On Sun, Mar 7, 2010 at 9:48 PM, Carsten Emde [off-list ref] wrote:
quoted hunk ↗ jump to hunk
Add SMP testing option (-S, --smp) to ptsematest, same as in cyclictest. Signed-off-by: Carsten Emde <redacted> Index: rt-tests/src/ptsematest/ptsematest.c ===================================================================--- rt-tests.orig/src/ptsematest/ptsematest.c +++ rt-tests/src/ptsematest/ptsematest.c@@ -173,6 +173,8 @@ static void display_help(void)"-i INTV --interval=INTV base interval of thread in us default=1000\n" "-l LOOPS --loops=LOOPS number of loops: default=0(endless)\n" "-p PRIO --prio=PRIO priority\n" + "-S --smp SMP testing: options -a -t and same priority\n" + " of all threads\n" "-t --threads one thread per available processor\n" "-t [NUM] --threads=NUM number of threads:\n" " without NUM, threads = max_cpus\n"@@ -189,6 +191,8 @@ static int num_threads = 1;static int max_cycles; static int interval = 1000; static int distance = 500; +static int smp; +static int sameprio; static void process_options (int argc, char *argv[]) {@@ -205,16 +209,21 @@ static void process_options (int argc, c{"interval", required_argument, NULL, 'i'}, {"loops", required_argument, NULL, 'l'}, {"priority", required_argument, NULL, 'p'}, + {"smp", no_argument, NULL, 'S'}, {"threads", optional_argument, NULL, 't'}, {"help", no_argument, NULL, '?'}, {NULL, 0, NULL, 0} }; - int c = getopt_long (argc, argv, "a::b:d:i:l:p:t::", + int c = getopt_long (argc, argv, "a::b:d:i:l:p:St::", long_options, &option_index); if (c == -1) break; switch (c) { case 'a': + if (smp) { + warn("-a ignored due to --smp\n"); + break; + } if (optarg != NULL) { affinity = atoi(optarg); setaffinity = AFFINITY_SPECIFIED;@@ -230,7 +239,16 @@ static void process_options (int argc, ccase 'i': interval = atoi(optarg); break; case 'l': max_cycles = atoi(optarg); break; case 'p': priority = atoi(optarg); break; + case 'S': + smp = 1; + num_threads = max_cpus; + setaffinity = AFFINITY_USEALL; + break; case 't': + if (smp) { + warn("-t ignored due to --smp\n"); + break; + } if (optarg != NULL) num_threads = atoi(optarg); else if (optind<argc && atoi(argv[optind]))@@ -261,6 +279,9 @@ static void process_options (int argc, cif (num_threads < 1) error = 1; + if (priority && smp) + sameprio = 1; + if (error) display_help (); }@@ -327,7 +348,7 @@ int main(int argc, char *argv[])} receiver[i].priority = priority; receiver[i].tracelimit = tracelimit; - if (priority > 0) + if (priority > 1 && !sameprio) priority--; receiver[i].delay.tv_sec = interval / USEC_PER_SEC; receiver[i].delay.tv_nsec = (interval % USEC_PER_SEC) * 1000; --
Acked-by: John Kacur <jkacur@redhat.com> -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html