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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2021-06-28 09:07:32 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2021-06-28 14:44:31 +0200 |
| commit | 0f621c63d7c3396010001c043e190b628d7b2982 (patch) | |
| tree | 67940fa50a0cb247609ced947e48b129c2138172 /commands | |
| parent | 997cca0f15dcc8b8c96f542ac66c2eaad353f88e (diff) | |
| download | barebox-0f621c63d7c3396010001c043e190b628d7b2982.tar.gz barebox-0f621c63d7c3396010001c043e190b628d7b2982.tar.xz | |
bthread: add options to create and delete dummy bthreads
With few bthread users currently, it can be useful to spin up some
threads to test stuff. Add a new option to add one more thread into the
mix and another to remove one of these dummy threads. Unlike the
existing -v option that can also be stacked, these threads remain active
after command termination unless explicitly removed.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20210628070732.16812-3-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'commands')
| -rw-r--r-- | commands/bthread.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/commands/bthread.c b/commands/bthread.c index ce3db2d3d2..aaade46e92 100644 --- a/commands/bthread.c +++ b/commands/bthread.c @@ -135,6 +135,8 @@ struct spawn { static int do_bthread(int argc, char *argv[]) { + static int dummynr; + static LIST_HEAD(dummies); LIST_HEAD(spawners); struct spawn *spawner, *tmp; int ret = 0; @@ -142,8 +144,29 @@ static int do_bthread(int argc, char *argv[]) bool time = false; struct arg *arg; - while ((opt = getopt(argc, argv, "itcv")) > 0) { + while ((opt = getopt(argc, argv, "aritcv")) > 0) { switch (opt) { + case 'a': + spawner = xzalloc(sizeof(*spawner)); + spawner->bthread = bthread_run(bthread_infinite, NULL, + "dummy%u", dummynr++); + if (!spawner->bthread) { + free(spawner); + ret = -ENOMEM; + goto cleanup; + } + + list_add(&spawner->list, &dummies); + break; + case 'r': + if (dummynr == 0) + return -EINVAL; + spawner = list_first_entry(&dummies, struct spawn, list); + bthread_cancel(spawner->bthread); + list_del(&spawner->list); + free(spawner); + dummynr--; + break; case 'i': bthread_info(); break; @@ -198,6 +221,8 @@ BAREBOX_CMD_HELP_START(bthread) BAREBOX_CMD_HELP_OPT ("-i", "Print information about registered bthreads") BAREBOX_CMD_HELP_OPT ("-t", "measure how many bthreads we currently run in 1s") BAREBOX_CMD_HELP_OPT ("-c", "count maximum context switches in 1s") + BAREBOX_CMD_HELP_OPT ("-a", "add a dummy bthread") + BAREBOX_CMD_HELP_OPT ("-r", "remove a dummy bthread") BAREBOX_CMD_HELP_OPT ("-v", "verify correct bthread operation") BAREBOX_CMD_HELP_END |